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Drainage Report 04-20-18
"Pcd18o I ooOM 2 WESTBRIDGE 4281 WEST 106TH STREET, CARMEL, IN DRAINAGE REPORT April 20, 2018 Revised: August 24, 2018 r- A SITE DEVELOPMENT CONSULTING ENGINEERS & LAND SURVEYORS AUG 3 2018 Q WESTBRIDGE 4281 WEST 106TH STREET, CARMEL, IN DRAINAGE REPORT Contents: I. INTRODUCTION 1 II. EXISTING DRAINAGE CONDITIONS 1 III. PROPOSED CONDITIONS 1 IV. SUMMARY& RESULTS 1 V. APPENDIX 1 INTRODUCTION The proposed project is the development of a 9.51 acres out of a parcel that is 14.08 acres tract of land located at 4281 West 106th Street, Carmel,Hamilton County, Indiana. The property is a residential site. The site has a current home on it with several outbuildings,paved driveways, and swimming pool. The site has several easements crossing for different gas lines. II. EXISTING DRAINAGE CONDITIONS The existing site does not have any form of detention. The site has a current open drain bisecting the property from north to south. This is a legal drain. The site currently drains towards this open ditch. III. PROPOSED CONDITIONS The objective is to construct an additional 22 residential lots and 7 lots being setup for multi-unit townhomes/condominium. The site will include storm water design, sanitary sewer design, street layout and grading, and other necessary utilities for site development. IV. SUMMARY &RESULTS The storm sewer pipes are designed for the 10-year storm event and HydraStorm Sewers were used in determine the storm sewer pipe sizes and grades for the site. The analysis for the detention facility was done by using HydroCAD. The results are listed in the appendix. The results for the 2, 10, 25,and 100 year storm events are listed below. Q2-yr-total developed =4.90 cfs Pond Discharge/Elevation 101)=0.48 cfs/890.01 ft Pond Discharge/Elevation 12P=0.78 cfs/889.93 ft Pond Discharge/Elevation 13P= 1.13 cfs/889.18 ft Pond Discharge/Elevation 14P= 1.72 cfs/890.03 ft Pond Discharge/Elevation 15P=0.86 cfs/888.09 ft Q10-yr-total developed =6.85 cfs Pond Discharge/Elevation 1013=0.78 cfs/890.44 ft Pond Discharge/Elevation 12P= 1.06 cfs/890.50 ft Pond Discharge/Elevation 13P= 1.48 cfs/890.19 ft Pond Discharge/Elevation 14P=2.43 cfs/890.68 ft Pond Discharge/Elevation 15P= 1.16 cfs/888.75 ft Q25-yr-total developed =7.92 cfs Pond Discharge/Elevation 1013=0.96 cfs/890.78 ft Pond Discharge/Elevation 12P= 1.22 cfs/890.91 ft Pond Discharge/Elevation 13P= 1.66 cfs/890.85 ft Pond Discharge/Elevation 14P=2.83 cfs/891.15 ft Pond Discharge/Elevation 15P= 1.31 cfs/889.17 ft Q1oo-yr-total developed=9.48 cfs Pond Discharge/Elevation 10P= 1.22 cfs/891.41 ft Pond Discharge/Elevation 12P= 1.45 cfs/891.61 ft Pond Discharge/Elevation 13P= 1.94 cfs/891.96 ft Pond Discharge/Elevation 14P=3.41 cfs/ 891.95 ft Pond Discharge/Elevation 15P= 1.51 cfs/889.82 ft As the developer is looking to just develop the northern section as part of Phase I, the two(2)northern ponds will need to be constructed. The associated discharge for just this segment is listed below: Q2-yr-total developed = 1.22 cfs Pond Discharge/Elevation 10P=0.48 cfs/890.01 ft Pond Discharge/Elevation 12P=0.78 cfs/889.93 ft Q10-yr-total developed = 1.81 cfs Pond Discharge/Elevation 10P=0.78 cfs/890.44 ft Pond Discharge/Elevation 12P= 1.06 cfs/890.50 ft Q25-yr-total developed =2.14 cfs Pond Discharge/Elevation 10P=0.96 cfs/890.78 ft Pond Discharge/Elevation 12P= 1.22 cfs/890.91 ft Q100-yr-total developed=2.64 cfs Pond Discharge/Elevation 10P= 1.22 cfs/891.41 ft Pond Discharge/Elevation 12P= 1.45 cfs/891.61 ft APPENDIX I. EXISTING CONDITIONS 111111111 Soil Map—Hamilton County, Indiana N $ 565570 565610 ,Ca60 565690 565730 565770 555810 565850 565890 566930 39°56 28"N R,,,-, 139°55'28"N 1 _ ry 108th to - • �., .�:. t 4 r 11 CrA a • ` " ; 1 S I g 4' t § �. ij i r o 4 °1p mow,lmoilbLxa- wand]&¢t m@ 0®° • ,, r q 39°56'19"N -, - 1 39°5619"N 566570 565610 565650 565690 565730 565770 565810 565850 565880 56%60 565970 3 3 Map Scale:1:1,870 if printed on A landscape(11°x 8.5")sheet. Meters N 0 25 50 100 150 1 A Feet 0 0 50 ,� 200 Map proje lion:Web Mercator Comer coordinates:WGS84 Edge tics:UTM Zone 16N WGS84 USDA Natural Resources Web Soil Survey 11/21/2017 Conservation Service National Cooperative Soil Survey Page 1 of 3 Soil Map—Hamilton County,Indiana MAP LEGEND MAP INFORMATION Area of Interest(AOI) g Spoil Area The soil surveys that comprise your AOI were mapped at Area of Interest(AOI) Q Stony Spot 1:15,800. Soils aa Very Stony Spot Warning:Soil Map may not be valid at this scale. Soil Map Unit Polygons Wet Spot Enlargement of maps beyond the scale of mapping can cause Soil Map Unit Lines misunderstanding of the detail of mapping and accuracy of soil p Other line placement.The maps do not show the small areas of • Soil Map Unit Points contrasting soils that could have been shown at a more detailed Special Line Features Special Point Features scale. (2) Blowout Water Features Streams and Canals Please rely on the bar scale on each map sheet for map Borrow Pit measurements. Transportation • Clay Spot Source of Map: Natural Resources Conservation Service t f-i Rails 0. Closed Depression Web Soil Survey URL: Interstate Highways Coordinate System: Web Mercator(EPSG:3857) X Gravel Pit US Routes Maps from the Web Soil Survey are based on the Web Mercator Gravelly Spot Major Roads projection,which preserves direction and shape but distorts distance and area.A projection that preserves area,such as the • Landfill Local Roads Albers equal-area conic projection,should be used if more A. Lava Flow accurate calculations of distance or area are required. Background Marsh or swamp . Aerial Photography This product is generated from the USDA-NRCS certified data as of the version date(s)listed below. . : Mine or Quarry Soil Survey Area: Hamilton County,Indiana 0 Miscellaneous Water Survey Area Data: Version 18,Oct 2,2017 O Perennial Water Soil map units are labeled(as space allows)for map scales Q,: Rock Outcrop 1:50,000 or larger. + Saline Spot Date(s)aerial images were photographed: Jun 27,2014—Aug 28,2014 Sandy Spot The orthophoto or other base map on which the soil lines were Severely Eroded Spot compiled and digitized probably differs from the background Sinkhole imagery displayed on these maps.As a result,some minor shifting of map unit boundaries may be evident. Slide or Slip • Sodic Spot USDA Natural Resources Web Soil Survey 11/21/2017 WITO ^-iser 'Coo Sol'" y ^of 3 Soil Map—Hamilton County, Indiana Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI Br Brookston silty clay loam,0 to 7.4 51.0% 2 percent slopes CrA Crosby silt loam,fine-loamy 7.1 49.0% subsoil,0 to 2 percent slopes Totals for Area of Interest 14.6 100.0% • USDA Natural Resources Web Soil Survey 11/21/2017 Conservation Service National Cooperative Soil Survey Page 3 of 3 EXIST ! NG Subcat Reach 'on• Mril Routing Diagram for DEVELOPED CONDITIONS-106th-existing Prepared by{enter your company name here}, Printed 8/10/2018 HydroCAD®10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC DEVELOPED CONDITIONS-106th-existing Prepared by {enter your company name here} Printed 8/10/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 13.060 61 >75% Grass cover, Good, HSG B (17S) 0.660 98 Paved parking, HSG B (17S) 0.340 98 Roofs, HSG B (17S) 14.060 64 TOTAL AREA DEVELOPED CONDITIONS-106th-existing Prepared by {enter your company name here} Printed 8/10/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 14.060 HSG B 17S 0.000 HSG C 0.000 HSG D 0.000 Other 14.060 TOTAL AREA DEVELOPED CONDITIONS-106th-existing Prepared by {enter your company name here) Printed 8/10/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 13.060 0.000 0.000 0.000 13.060 >75% Grass cover, Good 17S 0.000 0.660 0.000 0.000 0.000 0.660 Paved parking 17S 0.000 0.340 0.000 0.000 0.000 0.340 Roofs 17S 0.000 14.060 0.000 0.000 0.000 14.060 TOTAL AREA DEVELOPED CONDITIONS-106th-existing Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here) Printed 8/10/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 5 Time span=0.00-120.00 hrs, dt=0.01 hrs, 12001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 17S: EXISTING Runoff Area=14.060 ac 7.11% Impervious Runoff Depth=0.33" Tc=22.0 min CN=64 Runoff=2.91 cfs 0.386 af Total Runoff Area = 14.060 ac Runoff Volume = 0.386 af Average Runoff Depth = 0.33" 92.89% Pervious = 13.060 ac 7.11% Impervious = 1.000 ac DEVELOPED CONDITIONS-106th-existing Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/10/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment 17S: EXISTING Runoff = 2.91 cfs @ 12.21 hrs, Volume= 0.386 af, Depth= 0.33" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 2yr24hr Rainfall=2.66" Area (ac) CN Description 0.340 98 Roofs, HSG B 0.660 98 Paved parking, HSG B 13.060 61 >75% Grass cover, Good, HSG B 14.060 64 Weighted Average 13.060 92.89% Pervious Area 1.000 7.11% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 22.0 Direct Entry, Subcatchment 17S: EXISTING Hydrograph 0 Runoff 3- t2.9lsfsl Type II 24-hr 2yr24hr Rainfall=2.66" Runoff Area=14.060 ac 2- Runoff Volume=0.386 af Runoff Depth=0.33" 3 j Tc=22.0 min GN=64 1- 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-existing Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/10/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 7 Time span=0.00-120.00 hrs, dt=0.01 hrs, 12001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 17S: EXISTING Runoff Area=14.060 ac 7.11% Impervious Runoff Depth=0.88" Tc=22.0 min CN=64 Runoff=11.09 cfs 1.029 of Total Runoff Area = 14.060 ac Runoff Volume = 1.029 of Average Runoff Depth = 0.88" 92.89% Pervious = 13.060 ac 7.11% Impervious = 1.000 ac DEVELOPED CONDITIONS-106th-existing Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/10/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment 17S: EXISTING Runoff = 11.09 cfs @ 12.18 hrs, Volume= 1.029 af, Depth= 0.88" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 10yr-24hr Rainfall=3.83" Area (ac) CN Description 0.340 98 Roofs, HSG B 0.660 98 Paved parking, HSG B 13.060 61 >75% Grass cover, Good, HSG B 14.060 64 Weighted Average 13.060 92.89% Pervious Area 1.000 7.11% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 22.0 Direct Entry, Subcatchment 17S: EXISTING Hydrograph 12 I + CI 111.os� 11, Type II 24-hr 1 10yr-24hr Rainfall=3.83" 9= : Runoff Area=14.060 ac 6= Runoff Volume=1.029 of Runoff Depth=0.88" 2 _� __ _;Tc=22.0 m i n 5- CN=64 3- 27' 1-J 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-1 06th-existing Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here) Printed 8/10/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 9 Time span=0.00-120.00 hrs, dt=0.01 hrs, 12001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 17S: EXISTING Runoff Area=14.060 ac 7.11% Impervious Runoff Depth=1.40" Tc=22.0 min CN=64 Runoff=19.19 cfs 1.642 af Total Runoff Area = 14.060 ac Runoff Volume = 1.642 af Average Runoff Depth = 1.40" 92.89% Pervious = 13.060 ac 7.11% Impervious = 1.000 ac DEVELOPED CONDITIONS-106th-existing Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/10/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 10 Summary for Subcatchment 17S: EXISTING Runoff = 19.19 cfs @ 12.17 hrs, Volume= 1.642 af, Depth= 1.40" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 25yr-24hr Rainfall=4.72" Area (ac) CN Description 0.340 98 Roofs, HSG B 0.660 98 Paved parking, HSG B 13.060 61 >75% Grass cover, Good, HSG B 14.060 64 Weighted Average 13.060 92.89% Pervious Area 1.000 7.11% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 22.0 Direct Entry, Subcatchment 17S: EXISTING Hydrograph `. --- I r 21 CI Runoff 2O- ...-....)19.19 cfs I _____ —__ —_ 19-] -- -- Type II 24-hr 17: - — -- 25yr-24hr Rainfall=4.72" 15 ____._.___ .. _ __ Runoff Area=14.060 ac 14i — — — — 13 __-- Runoff Volume=1.642 of F. 12: — — 11; 1 _._ Runoff Depth=1.40' 0 10; Tc=22.0 m i n u 9� 6� — _L.. — ...._....__......... ........_........_.._..._.__._ C N=64 73 2-7 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-existing Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/10/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 11 Time span=0.00-120.00 hrs, dt=0.01 hrs, 12001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 17S: EXISTING Runoff Area=14.060 ac 7.11% Impervious Runoff Depth=2.60" Tc=22.0 min CN=64 Runoff=37.66 cfs 3.043 af Total Runoff Area = 14.060 ac Runoff Volume = 3.043 af Average Runoff Depth =2.60" 92.89% Pervious = 13.060 ac 7.11% Impervious = 1.000 ac DEVELOPED CONDITIONS-106th-existing Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by{enter your company name here} Printed 8/10/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 12 Summary for Subcatchment 17S: EXISTING Runoff = 37.66 cfs @ 12.15 hrs, Volume= 3.043 af, Depth= 2.60" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 100yr-24hr Rainfall=6.46" Area (ac) CN Description 0.340 98 Roofs, HSG B 0.660 98 Paved parking, HSG B 13.060 61 >75% Grass cover, Good, HSG B 14.060 64 Weighted Average 13.060 92.89% Pervious Area 1.000 7.11% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 22.0 Direct Entry, Subcatchment 17S: EXISTING Hydrograph 42 Runoff 40` 37.66 38- Type 1124-hr 34_ 1OOyr-24hr Rainfall=6.46" 30-, Runoff Area=14,060 ac -- I Runoff Volume=3.043 of w Runoff Depth=2.60rr 221 c 20 _ – ._.... ..................... — --- � Tc=22.0 min 18: -- -- ' — — 16= rt - CN=64 8 _ I-- 6i -6- } — 4' { — 2? 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) IL DEVELOPED CONDITIONS ---'\ \ \41--'. 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I I 53 I1 F `v ,I i- -4 P ' JO 9 3 o R m WESTBRIDGE CNN.ElGINEERS I 2 LAND SURVEYORS ERRA DEVELOPMENT CONSULTANTS MG GEOTECHNICAL n ie.'McWIa.a.. ..m SITE DEVELOPMENT ENVIRONMENTALn O R 2 O mea 6 �° 209 E.175th Sheet.Sole A Westfield.Indiana 46074 CONSTRUCTION STAKING .30 PRIMARY DEVELOPMENT PLAN 7:317.399.1216 9:31766369 CONSTRUCTION MAT.TESTING www.TERAMItedev.com Mil16L 18L ...---\.„..---N____ ..---N____ 19L POND 15P ' SND 1 • P PO D 13P �-. �� POND 12P 20L 6/4 21 P POND 10P TOTAL SITE DISCHARGE 4ubca) Reach "on. MP Routing Diagram for DEVELOPED CONDITIONS-106th-revised-OUTLET Prepared by{enter your company name here}, Printed 8/6/2018 HydroCAD®10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC DEVELOPED CONDITIONS-106th-revised-OUTLET Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 0.000 0 TOTAL AREA DEVELOPED CONDITIONS-106th-revised-OUTLET Type II 24-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 11 Summary for Link 20L: POND 10P Inflow Area = 3.039 ac, 48.01% Impervious, Inflow Depth > 1.17" for 2yr24hr event Inflow = 0.48 cfs @ 12.70 hrs, Volume= 0.297 af Primary = 0.48 cfs @ 12.70 hrs, Volume= 0.297 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs 2yr24hr Primary Outflow Imported from DEVELOPED CONDITIONS-106th-revised-04-19-18--Pond 10P.hce Link 20L: POND 1013 Hydrograph ■Inflow ` 10.48 cis 0 Primary inflow Area=3.039 an 0.5- I 048 cfs - 2y24ATPrlmaryOuHlow Imported from DEVELOPED CONDITIONS-106th-revised-04-19.18-Pond 10P.hce 0.45-_' . _. - Area=3.039 ac 48.01%Imperv. 0.4 e� 0.35- V w 0.3- u 0 0.25- LL 0.2 i 015- • '. 0.05- /� 0- . 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-OUTLET Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 12 Time span=0.00-120.00 hrs, dt=0.01 hrs, 12001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Pond 21P: TOTAL SITE DISCHARGE Inflow=6.85 cfs 1.893 af Primary=6.85 cfs 1.893 of imary Outflbinkmported from DEVELOPED CONDITIONS-106th-revised-04-19-18—Pond 15P.hce Inflow=1.16 cfs 0.379 af Area= 2.048 ac 56.50% Imperv. Primary=1.16 cfs 0.379 af mary Outflbinkmported from DEVELOPED CONDITIONS-106th-revised-04-19-18—Pond 14P.hce Inflow=2.43 cfs 0.379 af Area=2.048 ac 56.50% Imperv. Primary=2.43 cfs 0.379 af imary Outflbinkmported from DEVELOPED CONDITIONS-106th-revised-04-19-18—Pond 13P.hce Inflow=1.48 cfs 0.379 af Area=2.048 ac 56.50% Imperv. Primary=1.48 cfs 0.379 af mary Outflbinkmported from DEVELOPED CONDITIONS-106th-revised-04-19-18—Pond 12P.hce Inflow=1.06 cfs 0.215 af Area= 1.039 ac 64.30% Imperv. Primary=1.06 cfs 0.215 af '-imary OutflUnkmported from DEVELOPED CONDITIONS-106th-revised-04-19-18-Pond 10P.hce Inflow=0.78 cfs 0.541 af Area= 3.039 ac 48.01% Imperv. Primary=0.78 cfs 0.541 af I DEVELOPED CONDITIONS-106th-revised-OUTLET Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 13 Summary for Pond 21 P: TOTAL SITE DISCHARGE [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 10.222 ac, 54.77% Impervious, Inflow Depth = 2.22" for 10yr-24hr event Inflow = 6.85 cfs @ 12.22 hrs, Volume= 1.893 af Primary = 6.85 cfs @ 12.22 hrs, Volume= 1.893 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Pond 21P: TOTAL SITE DISCHARGE Hydrograph / ■Inflow 6.85 J II Primary 7-. 16.85 Inflow Area=10.222 ac 6— 1j5 • 0 4— 0 2- 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-OUTLET Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 14 Summary for Link 16L: POND 15P Inflow Area = 2.048 ac, 56.50% Impervious, Inflow Depth = 2.22" for 10yr-24hr event Inflow = 1.16 cfs @ 12.32 hrs, Volume= 0.379 af Primary = 1.16 cfs @ 12.32 hrs, Volume= 0.379 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs 10yr-24hr Primary Outflow Imported from DEVELOPED CONDITIONS-106th-revised-04-19-18-Pond 15P.hce Link 16L: POND 15P Hydrograph I■Inflow 1.16 0 Primary) Inflow Area=2.046 ac 1.16 cfs10yr-24hr Primary Outflow Imported from DEVELOPED CONDITIONS-10666-r ised-04-49-18—Pond-45P.hce... % Area=2.046 ac / 56.50%Impery. 1 • N `u 3 o - U 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-OUTLET Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here) Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 15 Summary for Link 17L: POND 14P Inflow Area = 2.048 ac, 56.50% Impervious, Inflow Depth = 2.22" for 10yr-24hr event Inflow = 2.43 cfs @ 12.17 hrs, Volume= 0.379 af Primary = 2.43 cfs @ 12.17 hrs, Volume= 0.379 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs 10yr-24hr Primary Outflow Imported from DEVELOPED CONDITIONS-106th-revised-04-19-18-Pond 14P.hce Link 17L: POND 14P Hydrograph / 13.1 Inflow 12.43 cfs I Primary 1 2.43 cfs Inflow Area=2.048 ac 10yr-24hr Primary Outflow Imported from DEVELOPED CONDITIONS-106th-revised-04-19-18—Pond 14P.hce Area=2.048 ac- _ 56.5D%imperv. 2 •• • • 1- ••� • 0 .. 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-OUTLET Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 16 Summary for Link 18L: POND 13P Inflow Area = 2.048 ac, 56.50% Impervious, Inflow Depth = 2.22" for 10yr-24hr event Inflow = 1.48 cfs @ 12.26 hrs, Volume= 0.379 of Primary = 1.48 cfs @ 12.26 hrs, Volume= 0.379 af, Atten= 0°/D, Lag= 0.0 min Primary outflow= Inflow, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs 10yr-24hr Primary Outflow Imported from DEVELOPED CONDITIONS-106th-revised-04-19-18-Pond 13P.hce Link 18L: POND 13P Hydrograph ■Inflow 148cis I 0 Primary • Inflow Area=2.048 ac I 1.48 cfs 10yr-24hr Primary Outflow Imported from DEVELOPED CONDITIONS-106th-revised-04.19.18-Pond 13P.hce Area=2.048 ac I 56.50%Imperv. V dd!�i�ce .._rr ;rT 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) I I DEVELOPED CONDITIONS-106th-revised-OUTLET Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 17 Summary for Link 19L: POND 12P Inflow Area = 1.039 ac, 64.30% Impervious, Inflow Depth =- 2.48" for 10yr-24hr event Inflow = 1.06 cfs @ 12.21 hrs, Volume= 0.215 af Primary = 1.06 cfs @ 12.21 hrs, Volume= 0.215 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs 10yr-24hr Primary Outflow Imported from DEVELOPED CONDITIONS-106th-revised-04-19-18--Pond 12P.hce Link 19L: POND 12P Hydrograph / II III Inflow 1 1.06crs I � ❑Primary 1.06 cfs Inflow Area=1.039 ac ____.._---.______.._____ .._...� ._._. _._.._.._ ..__..__. _._. .....-10yr-T4tiFPrimary Outflow... Imported from 1 DEVELOPED CONDITIONS-106th,evised-04-19-18-Pond 12P.hce Area=1.039 ac 64.30%Imperv. U' o 2 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) I I DEVELOPED CONDITIONS-106th-revised-OUTLET Type 1124-hr 10yr-24hr Rainfall=3.83rr Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 18 Summary for Link 20L: POND 10P Inflow Area = 3.039 ac, 48.01% Impervious, Inflow Depth > 2.13" for 10yr-24hr event Inflow = 0.78 cfs @ 12.73 hrs, Volume= 0.541 af Primary = 0.78 cfs @ 12.73 hrs, Volume= 0.541 af, Atten= 0%, Lag= 0.0 min Primary outflow= Inflow, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs 10yr-24hr Primary Outflow Imported from DEVELOPED CONDITIONS-106th-revised-04-19-18—Pond 10P.hce Link 20L: POND 10P Hydrograph 1 I I I Pim 1 0.85-. I o.76as ®_.. ... .._.. _. _ =Wary 1 Inflow Area-3.039 ac_. 0.78 cfs - 10yr-24hr Primary Outflow 0.87: Importedirom... 0.75-' j DEVELOPED CONDITIONS-196th.revised -19.18-Pond 10P.hce - _..._. ..__... ......... ......... ......... _...___ .._...___.. ......... _........ _Area=3:039ac 0.7= 48.01%Imperv. 065=" 0.6 0.55 w 0.5- 045 3 0 0.4 0.35 • 0.25:.. 0.2= 0.1 0.05 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type ll 24-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Pace 5 Time span=0.00-120.00 hrs, dt=0.01 hrs, 12001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 1 DEV: DRY POND A Runoff Area=3.039 ac 48.01% Impervious Runoff Depth=1.18" Tc=10.0 min CN=83 Runoff=5.52 cfs 0.298 af Subcatchment 5S: DRY POND B Runoff Area=1.039 ac 64.30% Impervious Runoff Depth=1.45" Tc=10.0 min CN=87 Runoff=2.31 cfs 0.125 of Subcatchment 8S: DRY POND C Runoff Area=2.048 ac 56.50% Impervious Runoff Depth=1.24" Tc=10.0 min CN=84 Runoff=3.92 cfs 0.212 af Subcatchment 9S: DRY POND D Runoff Area=2.048 ac 56.50% Impervious Runoff Depth=1.24" Tc=10.0 min CN=84 Runoff=3.92 cfs 0.212 af Subcatchment 16S: DRY POND E Runoff Area=2.048 ac 56.50% Impervious Runoff Depth=1.24" Tc=10.0 min CN=84 Runoff=3.92 cfs 0.212 af Pond 10P: (new Pond) Peak Elev=890.01' Storage=6,242 cf Inflow=5.52 cfs 0.298 af Outflow=0.48 cfs 0.297 of Pond 12P: (new Pond) Peak EIev=889.93' Storage=1,730 cf Inflow=2.31 cfs 0.125 of Outflow=0.78 cfs 0.125 af Pond 13P: (new Pond) Peak EIev=889.18' Storage=2,786 cf Inflow=3.92 cfs 0.212 af Outflow=1.13 cfs 0.212 af Pond 14P: (new Pond) Peak EIev=890.03' Storage=2,473 cf Inflow=3.92 cfs 0.212 af Outflow=1.72 cfs 0.212 af Pond 15P: (new Pond) Peak EIev=888.09' Storage=3,373 cf Inflow=3.92 cfs 0.212 of Outflow=0.86 cfs 0.212 of Total Runoff Area = 10.222 ac Runoff Volume = 1.059 af Average Runoff Depth = 1.24" 45.23% Pervious =4.624 ac 54.77% Impervious = 5.598 ac DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment 1 DEV: DRY POND A Runoff = 5.52 cfs @ 12.02 hrs, Volume= 0.298 af, Depth= 1.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 2yr24hr Rainfall=2.66" Area (ac) CN Description * 1.383 84 1/8 acre lots, 65% imp, HSG C 1.096 74 >75% Grass cover, Good, HSG C 0.560 98 Paved parking, HSG C 3.039 83 Weighted Average 1.580 51.99% Pervious Area 1.459 48.01% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, TR-20 CALC SHEET Subcatchment 1 DEV: DRY POND A Hydrograph 6- ©Runoff 15.521 (Type II24 � -hr 2yr24hr Rainfall=2.66" Runoff Area=3.039 ac 4- / Runoff Volume=0.298 af _ / —_ Runoff Depth=1.18 3 3-' 2 - // Tc=10.0 min CN-- 2 j % 83 1-4 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 7 Summary for Subcatchment 5S: DRY POND B Runoff = 2.31 cfs @ 12.02 hrs, Volume= 0.125 af, Depth= 1.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 2yr24hr Rainfall=2.66" Area (ac) CN Description * 0.534 84 1/8 acre lots, 65% imp, HSG C 0.184 74 >75% Grass cover, Good, HSG C 0.321 98 Paved parking, HSG C 1.039 87 Weighted Average 0.371 35.70% Pervious Area 0.668 64.30% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: DRY POND B Hydrograph ®Runoff (((� - (2.31 I Type II 24-hr 2-%� 2yr24hr Rainfall=2.66" Runoff Area=1.039 ac / Runoff Volume=0.125 of jRunoff Depth=1.45" LL / Tc=10.0 min___ ',7 CN=87 0 z / I������/I�����������������������������������������������������������������������������.� 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 8 Summary for Subcatchment 8S: DRY POND C Runoff = 3.92 cfs @ 12.02 hrs, Volume= 0.212 af, Depth= 1.24" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 2yr24hr Rainfall=2.66" Area (ac) CN Description * 1.174 84 1/8 acre lots, 65% imp, HSG C 0.274 74 >75% Grass cover, Good, HSG C 0.206 74 >75% Grass cover, Good, HSG C 0.394 98 Paved parking, HSG C 2.048 84 Weighted Average 0.891 43.50% Pervious Area 1.157 56.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 8S: DRY POND C Hydrograph O Runoff 4- 13.92 I Type II 24-hr 2yr24hr Rainfall=2.66" 3- Runoff Area=2.048 ac Runoff Volume=0.212 af --..._... gungff Depth=1.24" LL 2— Tc=10.0 min CN=84 1- 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 9 Summary for Subcatchment 9S: DRY POND D Runoff = 3.92 cfs @ 12.02 hrs, Volume= 0.212 af, Depth= 1.24" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 2yr24hr Rainfall=2.66" Area (ac) CN Description * 1.174 84 1/8 acre lots, 65% imp, HSG C 0.274 74 >75% Grass cover, Good, HSG C 0.394 98 Paved parking, HSG C 0.206 74 >75% Grass cover, Good, HSG C 2.048 84 Weighted Average 0.891 43.50% Pervious Area 1.157 56.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 9S: DRY POND D Hydrograph D Runoff 4 ssz�i Type II 24-hr 4 2yr24hr Rainfall=2.66" 3-' Runoff Area=2.048 ac Runoff Volume=0.212 of Runoff Depth=1.24" 3 2, Tc=10.0 min LL CN=84 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 10 Summary for Subcatchment 16S: DRY POND E Runoff = 3.92 cfs @ 12.02 hrs, Volume= 0.212 af, Depth= 1.24" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 2yr24hr Rainfall=2.66" Area (ac) CN Description * 1.174 84 1/8 acre lots, 65% imp, HSG C 0.274 74 >75% Grass cover, Good, HSG C 0.206 74 >75% Grass cover, Good, HSG C 0.394 98 Paved parking, HSG C 2.048 84 Weighted Average 0.891 43.50% Pervious Area 1.157 56.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 16S: DRY POND E Hydrograph D Runoff 4— 3.92 cfs Type II 24-hr yr24hr Rainfall=2.66" 3- Runoff Area=2.048 ac Runoff Volume=0.212 af Runoff Depth=1.24" 21 Tc=10.0 min - CN=84 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 11 Summary for Pond 10P: (new Pond) Inflow Area = 3.039 ac, 48.01% Impervious, Inflow Depth = 1.18" for 2yr24hr event Inflow = 5.52 cfs @ 12.02 hrs, Volume= 0.298 af Outflow = 0.48 cfs @ 12.70 hrs, Volume= 0.297 af, Atten= 91%, Lag= 40.8 min Primary = 0.48 cfs @ 12.70 hrs, Volume= 0.297 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.01' © 12.70 hrs Surf.Area= 13,123 sf Storage= 6,242 cf Plug-Flow detention time= 341.5 min calculated for 0.297 af(100% of inflow) Center-of-Mass det. time= 339.4 min ( 1,181.8 - 842.4 ) Volume Invert Avail.Storage Storage Description #1 889.50' 49,417 cf Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.50 11,478 0 0 890.50 14,720 13,099 13,099 891.50 18,144 16,432 29,531 892.50 21,628 19,886 49,417 Device Routing Invert Outlet Devices #1 Primary 889.50' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=0.48 cfs @ 12.70 hrs HW=890.01' (Free Discharge) 4-1=Orifice/Grate (Orifice Controls 0.48 cfs @ 2.44 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 12 Pond 10P: (new Pond) Hydrograph / -------..—� --— — ■Inflow ■Primary 5.52I In#lo .- Ar..e 3 II39 P k Elev= 90.01' tors a 242 c, 4- 3 0 LL 2 1-� 0.48 cfs 0 /ri5' AhlklEara_ 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 10P: (new Pond) Stage-Discharge ■Primary 892- a w - . 0 891- d w 890 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 13 Pond 10P: (new Pond) Stage-Area-Storage Surface/Horizontallwetted Area(sq-ft) 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 0 Surface ®Storage 892-' m w c 891- 'g d w _ 890- Custom Stan*000 / 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 14 Summary for Pond 12P: (new Pond) Inflow Area = 1.039 ac, 64.30% Impervious, Inflow Depth = 1.45" for 2yr24hr event Inflow = 2.31 cfs @ 12.02 hrs, Volume= 0.125 af Outflow = 0.78 cfs @ 12.18 hrs, Volume= 0.125 af, Atten= 66%, Lag= 9.8 min Primary = 0.78 cfs @ 12.18 hrs, Volume= 0.125 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 889.93' @ 12.18 hrs Surf.Area= 2,232 sf Storage= 1,730 cf Plug-Flow detention time=49.8 min calculated for 0.125 af(100% of inflow) Center-of-Mass det. time= 50.0 min ( 877.5 - 827.5 ) Volume Invert Avail.Storage Storage Description #1 889.00' 8,468 cf Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.00 1,486 0 0 890.00 2,288 1,887 1,887 891.00 3,250 2,769 4,656 892.00 4,373 3,812 8,468 Device Routing Invert Outlet Devices #1 Primary 889.00' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=0.78 cfs @ 12.18 hrs HW=889.93' (Free Discharge) L1=Orifice/Grate (Orifice Controls 0.78 cfs © 3.97 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 15 Pond 12P: (new Pond) Hydrograph ■Inflow 12.31 cr.l ■Primary InfIcieiv A e 1 .0 9 ac Pak Elev= 89.93' 2 for ge=1,730 cf -N O 1- 1078th 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 12P: (new Pond) Stage-Discharge 892 ®Primary 891 - w 0 890 " 88 , 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type II 24-hr 2yr24hr Rainfall=2.66" Prepared by{enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 16 Pond 12P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 0 Surface ■Storage 892--/ I -----'--- --- ---- -._._._..891- g 91- m c 0 W 8 / 9� uStom Stage DateJ / 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 17 Summary for Pond 13P: (new Pond) Inflow Area = 2.048 ac, 56.50% Impervious, Inflow Depth = 1.24" for 2yr24hr event Inflow = 3.92 cfs @ 12.02 hrs, Volume= 0.212 af Outflow = 1.13 cfs @ 12.21 hrs, Volume= 0.212 af, Atten= 71%, Lag= 11.2 min Primary = 1.13 cfs @ 12.21 hrs, Volume= 0.212 of Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 889.18' @ 12.21 hrs Surf.Area= 2,363 sf Storage= 2,786 cf Plug-Flow detention time= 34.2 min calculated for 0.212 af(100% of inflow) Center-of-Mass det. time= 34.2 min ( 873.0 - 838.8 ) Volume Invert Avail.Storage Storage Description #1 887.50' 13,804 cf Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 887.50 1,030 0 0 888.00 1,367 599 599 889.00 2,182 1,775 2,374 890.00 3,179 2,681 5,054 891.00 4,335 3,757 8,811 892.00 5,651 4,993 13,804 Device Routing Invert Outlet Devices #1 Primary 887.50' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.13 cfs @ 12.21 hrs HW=889.18' (Free Discharge) 4-1=Orifice/Grate (Orifice Controls 1.13 cfs @ 5.76 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type II 24-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 18 Pond 13P: (new Pond) Hydrograph ■Inflow 1 3.92 cfs 1 ■Primary Inflow Area=2.048 ac Peak Elev=889.18' 3- Storage=2,786 cf 0 2- j 1.13 cfs - 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 13P: (new Pond) Stage-Discharge 892-/ ❑Primary 891- 4 _ w 890—. _ 0 > - W 8891 888- A' Melefatif 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 19 Pond 13P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 0 Surface ®Storage 892 891- m - m 890- c - 0 d _ W - 889- 888- CUat4Nil Stage Data 0 2,000 4,000 6,000 8,000 10,000 12,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 20 Summary for Pond 14P: (new Pond) Inflow Area = 2.048 ac, 56.50% Impervious, Inflow Depth = 1.24" for 2yr24hr event Inflow = 3.92 cfs @ 12.02 hrs, Volume= 0.212 af Outflow = 1.72 cfs @ 12.15 hrs, Volume= 0.212 af, Allen= 56%, Lag= 7.9 min Primary = 1.72 cfs @ 12.15 hrs, Volume= 0.212 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.03' @ 12.15 hrs Surf.Area= 3,062 sf Storage= 2,473 cf Plug-Flow detention time= 38.6 min calculated for 0.212 af(100% of inflow) Center-of-Mass det. time= 38.7 min ( 877.5- 838.8 ) Volume Invert Avail.Storage Storage Description #1 889.00' 11,699 cf Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.00 1,766 0 0 890.00 3,021 2,394 2,394 891.00 4,578 3,800 6,193 892.00 6,434 5,506 11,699 Device Routing Invert Outlet Devices #1 Primary 889.00' 9.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.72 cfs @ 12.15 hrs HW=890.03' (Free Discharge) L1=Orifice/Grate (Orifice Controls 1.72 cfs @ 3.89 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 21 Pond 14P: (new Pond) Hydrograph / ■Inflow 3.92 cfs I I I Primary 4- I0Iofnr A est=2.048 a Peak Iev=890. 3- t r e=2,47 c 0 2.1/ LL L[_. • i 1-' 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 14P: (new Pond) Stage-Discharge 892 j❑Primary 891-' 0 - 0 c 0 m w - 890- Orifice/Grate 889 r" 0 1 2 3 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by{enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 22 Pond 14P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,000 0 Surface . . ■Storage 892—i 891- d a 0 'a - v - w 890- Custom Stage Data 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 23 Summary for Pond 15P: (new Pond) Inflow Area = 2.048 ac, 56.50% Impervious, Inflow Depth = 1.24" for 2yr24hr event Inflow = 3.92 cfs @ 12.02 hrs, Volume= 0.212 af Outflow = 0.86 cfs @ 12.26 hrs, Volume= 0.212 af, Atten= 78%, Lag= 14.2 min Primary = 0.86 cfs © 12.26 hrs, Volume= 0.212 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 888.09' @ 12.26 hrs Surf.Area= 3,873 sf Storage= 3,373 cf Plug-Flow detention time= 73.6 min calculated for 0.212 af(100% of inflow) Center-of-Mass det. time= 73.9 min ( 912.7 -838.8 ) Volume Invert Avail.Storage Storage Description #1 887.00' 17,251 cf Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 887.00 2,489 0 0 888.00 3,608 3,049 3,049 889.00 6,668 5,138 8,187 890.00 11,461 9,065 17,251 Device Routing Invert Outlet Devices #1 Primary 887.00' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=0.86 cfs @ 12.26 hrs HW=888.09' (Free Discharge) L1=Orifice/Grate (Orifice Controls 0.86 cfs @ 4.40 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here) Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 24 Pond 15P: (new Pond) Hydrograph / Inflow ase cfs] ■Primary 4- I'nflo e 2.i0 8 ac I = 8 •. 9' 3_, t rage3,373 cf N C) 0 2-+ LL 1_ (U.86 cfs 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 15P: (new Pond) Stage-Discharge 890 0 Primary 889- 'IT - O > N W � 888-• j✓ Orifice/Grate 887 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 25 Pond 15P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 0 Surface %„% 0 Storage 890 O• / 889-' _ m c 0 m 888-1'-. 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 26 Time span=0.00-120.00 hrs, dt=0.01 hrs, 12001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 1 DEV: DRY POND A Runoff Area=3.039 ac 48.01% Impervious Runoff Depth=2.14" Tc=10.0 min CN=83 Runoff=9.98 cfs 0.542 af Subcatchment 5S: DRY POND B Runoff Area=1.039 ac 64.30% Impervious Runoff Depth=2.48" Tc=10.0 min CN=87 Runoff=3.91 cfs 0.215 af Subcatchment 8S: DRY POND C Runoff Area=2.048 ac 56.50% Impervious Runoff Depth=2.22" Tc=10.0 min CN=84 Runoff=6.97 cfs 0.379 af Subcatchment 9S: DRY POND D Runoff Area=2.048 ac 56.50% Impervious Runoff Depth=2.22" Tc=10.0 min CN=84 Runoff=6.97 cfs 0.379 af Subcatchment 16S: DRY POND E Runoff Area=2.048 ac 56.50% Impervious Runoff Depth=2.22" Tc=10.0 min CN=84 Runoff=6.97 cfs 0.379 af Pond 10P: (new Pond) Peak EIev=890.44' Storage=12.205 cf Inflow=9.98 cfs 0.542 af Outflow=0.78 cfs 0.541 af Pond 12P: (new Pond) Peak Elev=890.50' Storage=3,158 cf Inflow=3.91 cfs 0.215 af Outflow=1.06 cfs 0.215 af Pond 13P: (new Pond) Peak EIev=890.19' Storage=5,674 cf Inflow=6.97 cfs 0.379 af Outflow=1.48 cfs 0.379 af Pond 14P: (new Pond) Peak EIev=890.68' Storage=4,823 cf Inflow=6.97 cfs 0.379 af Outflow=2.43 cfs 0.379 af Pond 15P: (new Pond) Peak EIev=888.75' Storage=6,613 cf Inflow=6.97 cfs 0.379 af Outflow=1.16 cfs 0.379 af Total Runoff Area = 10.222 ac Runoff Volume = 1.894 af Average Runoff Depth =2.22" 45.23% Pervious =4.624 ac 54.77% Impervious = 5.598 ac DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here) Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 27 Summary for Subcatchment 1 DEV: DRY POND A Runoff = 9.98 cfs @ 12.02 hrs, Volume= 0.542 af, Depth= 2.14" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 10yr-24hr Rainfall=3.83" Area (ac) CN Description * 1.383 84 1/8 acre lots, 65% imp, HSG C 1.096 74 >75% Grass cover, Good, HSG C 0.560 98 Paved parking, HSG C 3.039 83 Weighted Average 1.580 51.99% Pervious Area 1.459 48.01% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, TR-20 CALC SHEET Subcatchment 1 DEV: DRY POND A Hydrograph 11- 0 Runoff 19.98cfs I _. 10- Type II 24-hr 9- 10yr-24hr Rainfall=3.83" Runoff Area=3.039 ac 7= Runoff Volume=0.542 af 6= Runoff Depth=2.14" LL 5Tc=10.0 min 4 1 1 IIlllj j I I 1 CN=83 3- 2=' 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 28 Summary for Subcatchment 5S: DRY POND B Runoff = 3.91 cfs @ 12.01 hrs, Volume= 0.215 af, Depth= 2.48" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 10yr-24hr Rainfall=3.83" Area (ac) CN Description 0.534 84 1/8 acre lots, 65% imp, HSG C 0.184 74 >75% Grass cover, Good, HSG C 0.321 98 Paved parking, HSG C 1.039 87 Weighted Average 0.371 35.70% Pervious Area 0.668 64.30% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: DRY POND B Hydrograph ■Runoff 4 1391;:d Type II 24-hr 10yr-24hr Rainfall=3.83" Runoff Area=1 .039 ac 3 j Runoff Volume=0.215 of Runoff Depth=2.48" 2- Tc=10.0 min CN=87 1, / 0 /////ii�l/�/!1.!�/�G��/i iii!tl�, •i,</1!/!/'��l/!!/ii�/iiiiiiii�isoi-w ice 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 29 Summary for Subcatchment 8S: DRY POND C Runoff = 6.97 cfs @ 12.02 hrs, Volume= 0.379 af, Depth= 2.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 10yr-24hr Rainfall=3.83" Area (ac) CN Description * 1.174 84 1/8 acre lots, 65% imp, HSG C 0.274 74 >75% Grass cover, Good, HSG C 0.206 74 >75% Grass cover, Good, HSG C 0.394 98 Paved parking, HSG C 2.048 84 Weighted Average 0.891 43.50% Pervious Area 1.157 56.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 8S: DRY POND C Hydrograph O Runoff 1 6.97 cfs 1 Type II 24-hr 10yr-24hr Rainfall=3.83" Runoff Area=2.048 ac Runoff Volume=0.379 af Runoff Depth=2.22" 4 3 Tc=10.0 min CN=84 2- 1- 0- 0 =10 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by{enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 30 Summary for Subcatchment 9S: DRY POND D Runoff = 6.97 cfs @ 12.02 hrs, Volume= 0.379 af, Depth= 2.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 10yr-24hr Rainfall=3.83" Area (ac) CN Description * 1.174 84 1/8 acre lots, 65% imp, HSG C 0.274 74 >75% Grass cover, Good, HSG C 0.394 98 Paved parking, HSG C 0.206 74 >75% Grass cover, Good, HSG C 2.048 84 Weighted Average 0.891 43.50% Pervious Area 1.157 56.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 9S: DRY POND D Hydrograph I ■Runoff 7-. 1697c-is . ) Type II 24-hr 6 - -- - 10yr-24hr Rainfall=3.83" Runoff Area=2.048 ac Runoff Volume=0.379 af — Runoff Depth=2.22.. 4- 3 _ Tc=10.0 min CN=84 2, 1-" 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 31 Summary for Subcatchment 16S: DRY POND E Runoff = 6.97 cfs @ 12.02 hrs, Volume= 0.379 af, Depth= 2.22" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 10yr-24hr Rainfall=3.83" Area (ac) CN Description * 1.174 84 1/8 acre lots, 65% imp, HSG C 0.274 74 >75% Grass cover, Good, HSG C 0.206 74 >75% Grass cover, Good, HSG C 0.394 98 Paved parking, HSG C 2.048 84 Weighted Average 0.891 43.50% Pervious Area 1.157 56.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 16S: DRY POND E Hydrograph 0 Runoff )6.97 cfs 7- Type II 24-hr 10yr-24hr Rainfall=3.83" Runoff Area=2.048 ac Runoff Volume=0.379 af Runoff Depth=2.22" 4- o Tc=10.0 min 3:1 O CN=84 2- 0- 0 o"0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type II 24-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 32 Summary for Pond 10P: (new Pond) Inflow Area = 3.039 ac, 48.01% Impervious, Inflow Depth = 2.14" for 10yr-24hr event Inflow = 9.98 cfs @ 12.02 hrs, Volume= 0.542 af Outflow = 0.78 cfs @ 12.73 hrs, Volume= 0.541 af, Atten= 92%, Lag=42.9 min Primary = 0.78 cfs @ 12.73 hrs, Volume= 0.541 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.44' @ 12.73 hrs Surf.Area= 14,522 sf Storage= 12,205 cf Plug-Flow detention time= 295.0 min calculated for 0.541 af(100% of inflow) Center-of-Mass det. time= 294.2 min ( 1,119.5- 825.3 ) Volume Invert Avail.Storage Storage Description #1 889.50' 49,417 cf Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.50 11,478 0 0 890.50 14,720 13,099 13,099 891.50 18,144 16,432 29,531 892.50 21,628 19,886 49,417 Device Routing Invert Outlet Devices #1 Primary 889.50' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=0.78 cfs @ 12.73 hrs HW=890.44' (Free Discharge) L1=Orifice/Grate (Orifice Controls 0.78 cfs @ 4.00 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here) Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 33 Pond 10P: (new Pond) Hydrograph % / ■Inflow 11 10. = — _ "i ow Area3.039 ac Primary 9-/ ... / I Peak Iev=890A4— -' ,- Storage=12,20 cf j 3 o 1 li _ i 31 2•' / o• • 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 10P: (new Pond) Stage-Discharge / 0 Primary 892- w • 0 891- > _ w w 890 /, Orifice/Grate 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 34 Pond 10P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 2,0004,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 0 Surface . 1 , I I I • 1 ■Storage z 892-- • ti• • — — V? 0 891_:: • w . 890- - 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 35 Summary for Pond 12P: (new Pond) Inflow Area = 1.039 ac, 64.30% Impervious, Inflow Depth = 2.48" for 10yr-24hr event Inflow = 3.91 cfs @ 12.01 hrs, Volume= 0.215 af Outflow = 1.06 cfs @ 12.21 hrs, Volume= 0.215 af, Atten= 73%, Lag= 11.6 min Primary = 1.06 cfs @ 12.21 hrs, Volume= 0.215 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.50' @ 12.21 hrs Surf.Area= 2,771 sf Storage= 3,158 cf Plug-Flow detention time= 48.0 min calculated for 0.215 af(100% of inflow) Center-of-Mass det. time=47.8 min ( 859.9 - 812.1 ) Volume Invert Avail.Storage Storage Description #1 889.00' 8,468 cf Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.00 1,486 0 0 890.00 2,288 1,887 1,887 891.00 3,250 2,769 4,656 892.00 4,373 3,812 8,468 Device Routing Invert Outlet Devices #1 Primary 889.00' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.06 cfs @ 12.21 hrs HW=890.50' (Free Discharge) 4L-1=Orifice/Grate (Orifice Controls 1.06 cfs @ 5.39 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 36 Pond 12P: (new Pond) Hydrograph ■Inflow 391 ) ®Primary 4-' Inflow Are 1.039 a - I Peak EIev=89D.50' 3- Stor ge=3,158 c N 0 2-/ w i.o6cfs 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 12P: (new Pond) Stage-Discharge 892 " ■Primary 891 - m c 0 N w 890- 4Ae5 4.5# Orifice/Grate 889 1 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 37 Pond 12P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 0 Surface •Storage 892-i 891-" d _ a c - 0 LT, 890- , , , 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 38 Summary for Pond 13P: (new Pond) Inflow Area = 2.048 ac, 56.50% Impervious, Inflow Depth = 2.22" for 10yr-24hr event Inflow = 6.97 cfs @ 12.02 hrs, Volume= 0.379 af Outflow = 1.48 cfs @ 12.26 hrs, Volume= 0.379 af, Atten= 79%, Lag= 14.4 min Primary = 1.48 cfs @ 12.26 hrs, Volume= 0.379 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.19' @ 12.26 hrs Surf.Area= 3,397 sf Storage= 5,674 cf Plug-Flow detention time=41.1 min calculated for 0.379 af(100% of inflow) Center-of-Mass det. time= 41.2 min ( 863.3- 822.2 ) Volume Invert Avail.Storage Storage Description #1 887.50' 13,804 cf Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 887.50 1,030 0 0 888.00 1,367 599 599 889.00 2,182 1,775 2,374 890.00 3,179 2,681 5,054 891.00 4,335 3,757 8,811 892.00 5,651 4,993 13,804 Device Routing Invert Outlet Devices #1 Primary 887.50' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.48 cfs @ 12.26 hrs HW=890.19' (Free Discharge) L1=Orifice/Grate (Orifice Controls 1.48 cfs @ 7.52 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by{enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 39 Pond 13P: (new Pond) Hydrograph / Inflow 1697th. ( 0 Primary 7- Inflow Area=2.048 ac Peak EIev=890.19' Storage=5,674 cf 5- n - v 0 3- 2- 2 (1.48 ds 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 13P: (new Pond) / Stage-Discharge 892— I Primary 891- a m 890- c - 0 is w - w 889- ,, 888- ���,� / Orifice/Grate 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 40 Pond 13P: (new Pond) Stage-Area-Storage Surface/HorizontallWetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 ®Surface II Storage 892-,/ 891 890- c . 0 Ti W -889- 888- 0 89-888-0 2,000 4,000 6,000 8,000 10,000 12,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 41 Summary for Pond 14P: (new Pond) Inflow Area = 2.048 ac, 56.50% Impervious, Inflow Depth = 2.22" for 10yr-24hr event Inflow = 6.97 cfs @ 12.02 hrs, Volume= 0.379 af Outflow = 2.43 cfs @ 12.17 hrs, Volume= 0.379 af, Atten= 65%, Lag= 9.5 min Primary = 2.43 cfs @ 12.17 hrs, Volume= 0.379 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.68' @ 12.17 hrs Surf.Area=4,086 sf Storage=4,823 cf Plug-Flow detention time= 35.4 min calculated for 0.379 af(100% of inflow) Center-of-Mass det. time= 35.2 min ( 857.4 - 822.2 ) Volume Invert Avail.Storage Storage Description #1 889.00' 11,699 cf Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.00 1,766 0 0 890.00 3,021 2,394 2,394 891.00 4,578 3,800 6,193 892.00 6,434 5,506 11,699 Device Routing Invert Outlet Devices #1 Primary 889.00' 9.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=2.43 cfs @ 12.17 hrs HW=890.68' (Free Discharge) L1=Orifice/Grate (Orifice Controls 2.43 cfs @ 5.51 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 42 Pond 14P: (new Pond) Hydrograph ■Inflow 6.97c — ■Primary 7= Inflow'A ea=2.048 ac Pak --Iev=890.68' - tarage=4,823 c _. y _ 2- 4- 3 LL. 3-' _.)2.43 cfs 2-' 1-' 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 14P: (new Pond) Stage-Discharge 892 ■Primary 891- 7 m c 0 O w 890- Orifice/Grate 889- 0 1 2 3 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 43 Pond 14P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,000 ■Surface ■Storage 892--/ - .10 .11,1•••ee/ 891—' -- d . m 0 m w 890 jI „,„/ ,K , 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 44 Summary for Pond 15P: (new Pond) Inflow Area = 2.048 ac, 56.50% Impervious, Inflow Depth = 2.22" for 10yr-24hr event Inflow = 6.97 cfs @ 12.02 hrs, Volume= 0.379 af Outflow = 1.16 cfs @ 12.32 hrs, Volume= 0.379 af, Atten= 83%, Lag= 18.4 min Primary = 1.16 cfs @ 12.32 hrs, Volume= 0.379 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 888.75' @ 12.32 hrs Surf.Area= 5,902 sf Storage= 6,613 cf Plug-Flow detention time= 77.1 min calculated for 0.379 af(100% of inflow) Center-of-Mass det. time= 77.3 min ( 899.5 - 822.2 ) Volume Invert Avail.Storage Storage Description #1 887.00' 17,251 cf Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 887.00 2,489 0 0 888.00 3,608 3,049 3,049 889.00 6,668 5,138 8,187 890.00 11,461 9,065 17,251 Device Routing Invert Outlet Devices #1 Primary 887.00' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.16 cfs @ 12.32 hrs HW=888.75' (Free Discharge) 4-1=Orifice/Grate (Orifice Controls 1.16 cfs @ 5.90 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type II 24-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 45 Pond 15P: (new Pond) Hydrograph / •Inflow j 6.97cfs !Primary - 1048 l _ I I0 7 aa s I i Pak I _ 8 .T . Stor‘406,6113 c % / ' 3 _ 3-� • 2•-- /� • i 1.16 cfs ... _ 11 0' 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 15P: (new Pond) Stage-Discharge 890 13 Primary 889- 6 6 c 0 C N w 888 / Orifice/Grate 887 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here) Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 46 Pond 15P: (new Pond) Stage-Area-Storage SurfacelHorizontaUWetted Area(sq-ft) 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 ®Surface ■Storage 890 .............. 889-- a c W % / 887 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 Storage(cubic-feet) I DEVELOPED CONDITIONS-106th-revised-04-19-18 Type ll 24-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 47 Time span=0.00-120.00 hrs, dt=0.01 hrs, 12001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 1 DEV: DRY POND A Runoff Area=3.039 ac 48.01% Impervious Runoff Depth=2.92" Tc=10.0 min CN=83 Runoff=13.53 cfs 0.740 of Subcatchment 5S: DRY POND B Runoff Area=1.039 ac 64.30% Impervious Runoff Depth=3.30" Tc=10.0 min CN=87 Runoff=5.14 cfs 0.286 af Subcatchment 8S: DRY POND C Runoff Area=2.048 ac 56.50% Impervious Runoff Depth=3.02" Tc=10.0 min CN=84 Runoff=9.37 cfs 0.515 af Subcatchment 9S: DRY POND D Runoff Area=2.048 ac 56.50% Impervious Runoff Depth=3.02" Tc=10.0 min CN=84 Runoff=9.37 cfs 0.515 of Subcatchment 16S: DRY POND E Runoff Area=2.048 ac 56.50% Impervious Runoff Depth=3.02" Tc=10.0 min CN=84 Runoff=9.37 cfs 0.515 af Pond 10P: (new Pond) Peak EIev=890.78' Storage=17.291 cf Inflow=13.53 cfs 0.740 af Outflow=0.96 cfs 0.739 af Pond 12P: (new Pond) Peak EIev=890.91' Storage=4,355 cf Inflow=5.14 cfs 0.286 af Outflow=1.22 cfs 0.286 af Pond 13P: (new Pond) Peak EIev=890.85' Storage=8,176 cf Inflow=9.37 cfs 0.515 af Outflow=1.66 cfs 0.515 af Pond 14P: (new Pond) Peak Elev=891.15' Storage=6,898 cf Inflow=9.37 cfs 0.515 af Outflow=2.83 cfs 0.515 af Pond 15P: (new Pond) Peak Elev=889.17' Storage=9,364 cf Inflow=9.37 cfs 0.515 af Outflow=1.31 cfs 0.515 of Total Runoff Area = 10.222 ac Runoff Volume =2.570 af Average Runoff Depth =3.02" 45.23% Pervious =4.624 ac 54.77% Impervious = 5.598 ac I DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 48 Summary for Subcatchment 1 DEV: DRY POND A Runoff = 13.53 cfs @ 12.01 hrs, Volume= 0.740 af, Depth= 2.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 25yr-24hr Rainfall=4.72" Area (ac) CN Description * 1.383 84 1/8 acre lots, 65% imp, HSG C 1.096 74 >75% Grass cover, Good, HSG C 0.560 98 Paved parking, HSG C 3.039 83 Weighted Average 1.580 51.99% Pervious Area 1.459 48.01% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, TR-20 CALC SHEET Subcatchment 1 DEV: DRY POND A Hydrograph 157I 0 Runoff 14. 11353,4s I ,Type 1124-hr 12= 25yr-24hr Rainfall=4.72" 1,' / Runoff Area=3.039 ac 9, / - Runoff Volume=0.740 af 8= j Runoff Depth=2.92 Tc=10.0 min 6- J CN=83 5 I 4_ 3=' I - 2- -._.... r---- F — 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here) Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 49 Summary for Subcatchment 5S: DRY POND B Runoff = 5.14 cfs @ 12.01 hrs, Volume= 0.286 af, Depth= 3.30" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type Il 24-hr 25yr-24hr Rainfall=4.72" Area (ac) CN Description * 0.534 84 1/8 acre lots, 65% imp, HSG C 0.184 74 >75% Grass cover, Good, HSG C 0.321 98 Paved parking, HSG C 1.039 87 Weighted Average 0.371 35.70% Pervious Area 0.668 64.30% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: DRY POND B Hydrograph 0 Runoff l 5 l4 crs I 5- Type II 24-hr 25yr-24hr Rainfall=4.72" 4; / Runoff Area=1.039 ac Runoff Volume=0.286 of 3_ % Runoff Depth=3.30'• Tc=10.0 min 2- CN=87 1-2 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 50 Summary for Subcatchment 8S: DRY POND C Runoff = 9.37 cfs @ 12.01 hrs, Volume= 0.515 af, Depth= 3.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 25yr-24hr Rainfall=4.72" Area (ac) CN Description * 1.174 84 1/8 acre lots, 65% imp, HSG C 0.274 74 >75% Grass cover, Good, HSG C 0.206 74 >75% Grass cover, Good, HSG C 0.394 98 Paved parking, HSG C 2.048 84 Weighted Average 0.891 43.50% Pervious Area 1.157 56.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 8S: DRY POND C Hydrograph 0 Runoff 10- 19370%1 .. 9 Type 1124-hr __-- ------._._--__-_ -_.-_- 25yr-24hr Rainfall=4.72" 8- _...------------ Runoff Area=2.048 ac 7- �__..------____-- Runoff Volume=0.515 of 6— %. Runoff Depth=3.02" 35- o Tc=10.0 min CN=84 3- 24 1- 0- 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) I DEVELOPED CONDITIONS-106th-revised-04-19-18 Type II 24-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 51 Summary for Subcatchment 9S: DRY POND D Runoff = 9.37 cfs @ 12.01 hrs, Volume= 0.515 af, Depth= 3.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 25yr-24hr Rainfall=4.72" Area (ac) CN Description * 1.174 84 1/8 acre lots, 65% imp, HSG C 0.274 74 >75% Grass cover, Good, HSG C 0.394 98 Paved parking, HSG C 0.206 74 >75% Grass cover, Good, HSG C 2.048 84 Weighted Average 0.891 43.50% Pervious Area 1.157 56.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 9S: DRY POND D Hydrograph ❑Runoff 10_' 9.37 cfs 9- Type II 24-hr 8 j 25yr-24hr Rainfall=4.72" Runoff Area=2.048 ac Runoff Volume=0.515 of 6^ Runoff Depth=3.02 ° 5= Tc=10.0 min CN=84 3-3 1- o. 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) I DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 52 Summary for Subcatchment 16S: DRY POND E Runoff = 9.37 cfs @ 12.01 hrs, Volume= 0.515 af, Depth= 3.02" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 25yr-24hr Rainfall=4.72" Area (ac) CN Description * 1.174 84 1/8 acre lots, 65% imp, HSG C 0.274 74 >75% Grass cover, Good, HSG C 0.206 74 >75% Grass cover, Good, HSG C 0.394 98 Paved parking, HSG C 2.048 84 Weighted Average 0.891 43.50% Pervious Area 1.157 56.50% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 16S: DRY POND E Hydrograph 10 O Runoff 1937. cfs I Type II 24-hr 25yr-24hr Rainfall=4.72" 8 Runoff Area=2.048 ac 7- Runoff Volume=0.515 af 6= Runoff_Depth=3.02" LL 5_, 1Tc=10.0 min CN=84 2- 1= I 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 53 Summary for Pond 10P: (new Pond) Inflow Area = 3.039 ac, 48.01% Impervious, Inflow Depth = 2.92" for 25yr-24hr event Inflow = 13.53 cfs @ 12.01 hrs, Volume= 0.740 af Outflow = 0.96 cfs © 12.82 hrs, Volume= 0.739 af, Atten= 93%, Lag=48.6 min Primary = 0.96 cfs © 12.82 hrs, Volume= 0.739 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.78' @ 12.82 hrs Surf.Area= 15,665 sf Storage= 17,291 cf Plug-Flow detention time= 297.4 min calculated for 0.739 af(100% of inflow) Center-of-Mass det. time= 296.8 min ( 1,113.3 - 816.4 ) Volume Invert Avail.Storage Storage Description #1 889.50' 49,417 cf Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.50 11,478 0 0 890.50 14,720 13,099 13,099 891.50 18,144 16,432 29,531 892.50 21,628 19,886 49,417 Device Routing Invert Outlet Devices #1 Primary 889.50' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=0.96 cfs @ 12.82 hrs HW=890.78' (Free Discharge) L1=Orifice/Grate (Orifice Controls 0.96 cfs @ 4.88 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type II 24-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 54 Pond 10P: (new Pond) Hydrograph — ............� .._ �_ __.._.�_ .........L. •Inflow 1 15- 13.53 cfs) 0 Primary Inflow Area=3.039 ac 13-? _ 12. Peak EIev=890.78' Storage=17,291 cf 10_ 8= o 7-:%: u. 5:' 4 ' 3_ 2 0.96 cis 1-s 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 10P: (new Pond) Stage-Discharge •Primary 892- cud 0 891- 'g 91- . d w ✓f, 890 a-afl A�- Orifice/Grote • 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here) Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 55 Pond 10P: (new Pond) Stage-Area-Storage Surface/Horizontal/wetted Area(sq-ft) 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 I❑Surface p Storage • 892- 0 891 > • m W 890," 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 56 Summary for Pond 12P: (new Pond) Inflow Area = 1.039 ac, 64.30% Impervious, Inflow Depth = 3.30" for 25yr-24hr event Inflow = 5.14 cfs @ 12.01 hrs, Volume= 0.286 af Outflow = 1.22 cfs @ 12.23 hrs, Volume= 0.286 af, Atten= 76%, Lag= 12.8 min Primary = 1.22 cfs @ 12.23 hrs, Volume= 0.286 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.91' @ 12.23 hrs Surf.Area= 3,160 sf Storage=4,355 cf Plug-Flow detention time=48.9 min calculated for 0.286 af(100% of inflow) Center-of-Mass det. time= 49.1 min ( 853.0- 804.0 ) Volume Invert Avail.Storage Storage Description #1 889.00' 8,468 cf Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.00 1,486 0 0 890.00 2,288 1,887 1,887 891.00 3,250 2,769 4,656 892.00 4,373 3,812 8,468 Device Routing Invert Outlet Devices #1 Primary 889.00' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.22 cfs @ 12.23 hrs HW=890.91' (Free Discharge) L1=Orifice/Grate (Orifice Controls 1.22 cfs @ 6.20 fps) I DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 57 Pond 12P: (new Pond) Hydrograph I I I I I ■Inflow 'suds' ■Primary 5_ Inflow'Area 1 .03 9 ac Pak EIev=890.91 4- I torage=4,355 cf 3— LL - 2-' 1J 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 12P: (new Pond) / Stage-Discharge 892J ` ❑Primary 891-' m - m c 0 > m Lu 890— Orifice/Grate 889 . 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 58 Pond 12P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 0 Surface ■Storage 892-/ . 891— w _ d 0 - ar - w 890- / • • 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 sin 02840 ©2013 HydroCAD Software Solutions LLC Page 59 Summary for Pond 13P: (new Pond) Inflow Area = 2.048 ac, 56.50% Impervious, Inflow Depth = 3.02" for 25yr-24hr event Inflow = 9.37 cfs @ 12.01 hrs, Volume= 0.515 af Outflow = 1.66 cfs @ 12.29 hrs, Volume= 0.515 af, Atten= 82%, Lag= 16.8 min Primary = 1.66 cfs @ 12.29 hrs, Volume= 0.515 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.85' @ 12.29 hrs Surf.Area=4,162 sf Storage= 8,176 cf Plug-Flow detention time= 48.3 min calculated for 0.515 af(100% of inflow) Center-of-Mass det. time=48.4 min ( 861.9 - 813.5 ) Volume Invert Avail.Storage Storage Description #1 887.50' 13,804 cf Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 887.50 1,030 0 0 888.00 1,367 599 599 889.00 2,182 1,775 2,374 890.00 3,179 2,681 5,054 891.00 4,335 3,757 8,811 892.00 5,651 4,993 13,804 Device Routing Invert Outlet Devices #1 Primary 887.50' 6.0"Veil. Orifice/Grate C= 0.600 Primary OutFlow Max=1.66 cfs © 12.29 hrs HW=890.85' (Free Discharge) L1=Orifice/Grate (Orifice Controls 1.66 cfs @ 8.48 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type II 24-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 60 Pond 13P: (new Pond) Hydrograph ■InFlow 1937cfs I ❑Primary Inflow Area=2.048 ac Peak Elev=890.85' 8 Storage=8,176 cf 7-- a 05 3, 2 1166cfs 1-- 0" 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 13P: (new Pond) Stage-Discharge 892 0 Primary 891- 17) 890 c 0 c w 889- J 888- / � Orifice/Grate Qr'- 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 75 Pond 10P: (new Pond) Hydrograph Inflow f E 20 55 ds I El Primary 21a Inflow Area=3.039 ac 18 - Peak EIev=891 .41' 161.--// -- -- _ Storage=27;917 cf LT. lot 33 , 2.' - 122 ds 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 10P: (new Pond) Stage-Discharge ■Primary 892 w 0 891 CO w 890 Orifice/Grate 0 Discharge (cfs) M DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 76 Pond 10P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000p Surface j . ■Storage .._._... i L........ 892- , 0 891-' > d La - 890-" Custom Soliatott 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 77 Summary for Pond 12P: (new Pond) Inflow Area = 1.039 ac, 64.30% Impervious, Inflow Depth = 4.96" for 100yr-24hr event Inflow = 7.54 cfs @ 12.01 hrs, Volume= 0.429 af Outflow = 1.45 cfs @ 12.26 hrs, Volume= 0.429 af, Atten= 81%, Lag= 15.1 min Primary = 1.45 cfs @ 12.26 hrs, Volume= 0.429 of Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 891.61' @ 12.26 hrs Surf.Area= 3,939 sf Storage= 6,862 cf Plug-Flow detention time= 54.2 min calculated for 0.429 af(100% of inflow) Center-of-Mass det. time= 54.1 min ( 846.6- 792.6 ) Volume Invert Avail.Storage Storage Description #1 889.00' 8,468 cf Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.00 1,486 0 0 890.00 2,288 1,887 1,887 891.00 3,250 2,769 4,656 892.00 4,373 3,812 8,468 Device Routing Invert Outlet Devices #1 Primary 889.00' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.45 cfs @ 12.26 hrs HW=891.61' (Free Discharge) t-1=Orifice/Grate (Orifice Controls 1.45 cfs @ 7.40 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Pape 78 Pond 12P: (new Pond) Hydrograph ■Inflow yrs) 0 Primary 8 .. Aea=1 .039 ac 7_ v� 6 t rage=6,8 2 cf 5- 0 4� 3. 2— ..- 1.45cfs 1.. 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 12P: (new Pond) / Stage-Discharge 892- O Primary 891- m - 0 890- 1 Oriic/Orta 889 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 79 Pond 12P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 0 Surface ■Storage 892 • 891- a) _ c V 0 a w 890 PUStE»t11 St#19e, a , , , 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 80 Summary for Pond 13P: (new Pond) Inflow Area = 2.048 ac, 56.50% Impervious, Inflow Depth = 4.63" for 100yr-24hr event Inflow = 14.11 cfs @ 12.01 hrs, Volume= 0.790 of Outflow = 1.94 cfs @ 12.37 hrs, Volume= 0.790 af, Atten= 86%, Lag= 21.7 min Primary = 1.94 cfs @ 12.37 hrs, Volume= 0.790 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 891.96' @ 12.37 hrs Surf.Area= 5,595 sf Storage= 13,565 cf Plug-Flow detention time= 64.4 min calculated for 0.790 af(100% of inflow) Center-of-Mass det. time= 64.4 min ( 865.7- 801.3 ) Volume Invert Avail.Storage Storage Description #1 887.50' 13,804 cf Custom Stage Data (Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 887.50 1,030 0 0 888.00 1,367 599 599 889.00 2,182 1,775 2,374 890.00 3,179 2,681 5,054 891.00 4,335 3,757 8,811 892.00 5,651 4,993 13,804 Device Routing Invert Outlet Devices #1 Primary 887.50' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.94 cfs @ 12.37 hrs HW=891.96' (Free Discharge) L1=Orifice/Grate (Orifice Controls 1.94 cfs @ 9.88 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 81 Pond 13P: (new Pond) / Hydrograph / .......... .. •Inflow II 114.1111411cfsPrimaryl 15:- ___-- --- Inflow Area=2.048 ac 14= 13 - — - -...... Peak EIev=891.96' 11=" Stora.7 e=13,565 cf 17 3 8- 3-:- s a cry —.._ . 2 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 13P: (new Pond) Stage-Discharge 892 ❑Primary 891- ao 890- c - 0 ao - W 889- /// 888- /�������� 0 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 82 Pond 13P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 0 Surface •Storage 892 • 891-' 890-' c ) . w 889- 888- / 0 2,000 4,000 6,000 8,000 10,000 12,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here) Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 83 Summary for Pond 14P: (new Pond) Inflow Area = 2.048 ac, 56.50% Impervious, Inflow Depth = 4.63" for 100yr-24hr event Inflow = 14.11 cfs @ 12.01 hrs, Volume= 0.790 of Outflow = 3.41 cfs @ 12.22 hrs, Volume= 0.790 af, Atten= 76%, Lag= 12.6 min Primary = 3.41 cfs @ 12.22 hrs, Volume= 0.790 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 891.95' @ 12.22 hrs Surf.Area= 6,345 sf Storage= 11,394 cf Plug-Flow detention time= 38.7 min calculated for 0.790 af(100% of inflow) Center-of-Mass det. time= 38.8 min ( 840.1 - 801.3 ) Volume Invert Avail.Storage Storage Description #1 889.00' 11,699 cf Custom Stage Data(Prismatic) Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.00 1,766 0 0 890.00 3,021 2,394 2,394 891.00 4,578 3,800 6,193 892.00 6,434 5,506 11,699 Device Routing Invert Outlet Devices #1 Primary 889.00' 9.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=3.41 cfs @ 12.22 hrs HW=891.95' (Free Discharge) t-1=Orifice/Grate (Orifice Controls 3.41 cfs @ 7.73 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type II 24-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 84 Pond 14P: (new Pond) Hydrograph f ---�--- � � —+--- -- L7L: / — — .. ry 14.1 ids 15-j Inflow A eta=2.048 ac— 14=' 13 %— Peak I'ev=891 .95' 12 — 11-V. ; Stoea ge=11 ,394 cf 10= i • 6� 64V i 4- z 3.41•, ------ --------- 23// ,1/ 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 14P: (new Pond) Stage-Discharge 892 ❑Primary 891 a) a) 0 a) w 890 ZAY� /7// / _ Orifice/Grate 889 0 1 2 3 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 85 Pond 14P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 5,000 5,500 6,000 0 Surface 0 Storage 892 891- m - w O .7 W - W 890- ' .. _. ��� �f j, 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 86 Summary for Pond 15P: (new Pond) Inflow Area = 2.048 ac, 56.50% Impervious, Inflow Depth = 4.63" for 100yr-24hr event Inflow = 14.11 cfs @ 12.01 hrs, Volume= 0.790 of Outflow = 1.51 cfs @ 12.49 hrs, Volume= 0.790 af, Atten= 89%, Lag= 28.6 min Primary = 1.51 cfs @ 12.49 hrs, Volume= 0.790 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 889.82' @ 12.49 hrs Surf.Area= 10,584 sf Storage= 15,233 cf Plug-Flow detention time= 106.7 min calculated for 0.790 af(100% of inflow) Center-of-Mass det. time= 106.5 min ( 907.8- 801.3 ) Volume Invert Avail.Storage Storage Description #1 887.00' 17,251 cf Custom Stage Data (Prismatic) Listed below(Recaic) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 887.00 2,489 0 0 888.00 3,608 3,049 3,049 889.00 6,668 5,138 8,187 890.00 11,461 9,065 17,251 Device Routing Invert Outlet Devices #1 Primary 887.00' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.51 cfs @ 12.49 hrs HW=889.82' (Free Discharge) 4-1=Orifice/Grate (Orifice Controls 1.51 cfs @ 7.71 fps) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 87 Pond 15P: (new Pond) Hydrograph 1 f -- Inflow (ia.ii — ! .... ! _ 0 Primary 15= 14= Inflow Area=2.048 ac 13 Peak E lev=889.82' 12= Storage=15,233 cf 8-4 a 7 , 6�. 3 5 4=' 3 E' )151cfs 1=" 0- 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 15P: (new Pond) Stage-Discharge 890- ❑Primary 889- a w c 0 m - > m w - 888- Orifice/Grate 887 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-04-19-18 Type II 24-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/6/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 88 Pond 15P: (new Pond) Stage-Area-Storage Su rfacc;HorizontallWetted Area(sq-ft) 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 9,000 10,000 11,000 ®Surface •Storage 890 , I I I 889oilePV - d - CUC 0 'P - w 888-, .. AJ, .aimim 887r �. . ,� {" , ( , 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 Storage(cubic-feet) K1DE • V DRY P NDA DRY OND B 10P 12P (new Porskli ew Pond) 16P Total Release SUbcat Reach 'on. MI Routing Diagram for DEVELOPED CONDITIONS-106th-revised-northern 2 Prepared by{enter your company name here}, Printed 8/24/2018 HydroCAD®10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC DEVELOPED CONDITIONS-106th-revised-northern 2 Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 2 Area Listing (all nodes) Area CN Description (acres) (subcatchment-numbers) 1.917 84 1/8 acre lots, 65% imp, HSG C (1DEV, 5S) 1.280 74 >75% Grass cover, Good, HSG C (1 DEV, 5S) 0.881 98 Paved parking, HSG C (1DEV, 5S) 4.078 84 TOTAL AREA DEVELOPED CONDITIONS-106th-revised-northern 2 Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 3 Soil Listing (all nodes) Area Soil Subcatchment (acres) Group Numbers 0.000 HSG A 0.000 HSG B 4.078 HSG C 1 DEV, 5S 0.000 HSG D 0.000 Other 4.078 TOTAL AREA DEVELOPED CONDITIONS-106th-revised-northern 2 Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 4 Ground Covers (all nodes) HSG-A HSG-B HSG-C HSG-D Other Total Ground Subcatchment (acres) (acres) (acres) (acres) (acres) (acres) Cover Numbers 0.000 0.000 1.917 0.000 0.000 1.917 1/8 acre lots, 65% imp 1DEV, 5S 0.000 0.000 1.280 0.000 0.000 1.280 >75% Grass cover, Good 1DEV, 5S 0.000 0.000 0.881 0.000 0.000 0.881 Paved parking 1DEV, 5S 0.000 0.000 4.078 0.000 0.000 4.078 TOTAL AREA DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here) Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Pane 5 Time span=0.00-120.00 hrs, dt=0.01 hrs, 12001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 1 DEV: DRY POND A Runoff Area=3.039 ac 48.01% Impervious Runoff Depth=1.18" Tc=10.0 min CN=83 Runoff=5.52 cfs 0.298 af Subcatchment 5S: DRY POND B Runoff Area=1.039 ac 64.30% Impervious Runoff Depth=1.45" Tc=10.0 min CN=87 Runoff=2.31 cfs 0.125 af Pond 10P: (new Pond) Peak EIev=890.01' Storage=6,242 cf Inflow=5.52 cfs 0.298 af Outflow=0.48 cfs 0.297 af Pond 12P: (new Pond) Peak Elev=889.93' Storage=1,730 cf Inflow=2.31 cfs 0.125 af Outflow=0.78 cfs 0.125 af Pond 16P: Total Release Inflow=1.22 cfs 0.422 af Primary=1.22 cfs 0.422 af Total Runoff Area =4.078 ac Runoff Volume =0.424 af Average Runoff Depth = 1.25" 47.84% Pervious = 1.951 ac 52.16% Impervious =2.127 ac DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here) Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 6 Summary for Subcatchment 1DEV: DRY POND A Runoff = 5.52 cfs @ 12.02 hrs, Volume= 0.298 af, Depth= 1.18" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 2yr24hr Rainfall=2.66" Area (ac) CN Description * 1.383 84 1/8 acre lots, 65% imp, HSG C 1.096 74 >75% Grass cover, Good, HSG C 0.560 98 Paved parking, HSG C 3.039 83 Weighted Average 1.580 51.99% Pervious Area 1.459 48.01% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, TR-20 CALC SHEET Subcatchment 1 DEV: DRY POND A Hydrograph 6-' 0 Runoff 15.52 crs I Type II 24-hr 5� / 2yr24hr Rainfall=2.66" Runoff Area=3-C39 ac Runoff Volume=0.29a af 3 � j Runoff Depth=1.18" LL j Tc=10.0 min 2� as=-83 1 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 7 Summary for Subcatchment 5S: DRY POND B Runoff = 2.31 cfs @ 12.02 hrs, Volume= 0.125 af, Depth= 1.45" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 2yr24hr Rainfall=2.66" Area (ac) CN Description * 0.534 84 1/8 acre lots, 65% imp, HSG C 0.184 74 >75% Grass cover, Good, HSG C 0.321 98 Paved parking, HSG C 1.039 87 Weighted Average 0.371 35.70% Pervious Area 0.668 64.30% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: DRY POND B Hydrograph 0 Runoff 2.31 c`s Type II 24-hr 2yr24hr RaihfaII=2.66" Runoff Area=1.039 ac / Runoff Volume=0.125 of Runoff Depth=1.45" Tc=10.0 min CN=87 0 %////// �/////I////////////////////////////////////////////////" 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Pace 8 Summary for Pond 10P: (new Pond) Inflow Area = 3.039 ac, 48.01% Impervious, Inflow Depth = 1.18" for 2yr24hr event Inflow = 5.52 cfs @ 12.02 hrs, Volume= 0.298 af Outflow = 0.48 cfs @ 12.70 hrs, Volume= 0.297 af, Atten= 91%, Lag= 40.8 min Primary = 0.48 cfs @ 12.70 hrs, Volume= 0.297 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.01' @ 12.70 hrs Surf.Area= 13,123 sf Storage= 6,242 cf Plug-Flow detention time= 341.5 min calculated for 0.297 af(100% of inflow) Center-of-Mass det. time= 339.4 min ( 1,181.8 - 842.4 ) Volume Invert Avail.Storage Storage Description #1 889.50' 49,417 cf Custom Stage Data (Prismatic)Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.50 11,478 0 0 890.50 14,720 13,099 13,099 891.50 18,144 16,432 29,531 892.50 21,628 19,886 49,417 Device Routing Invert Outlet Devices #1 Primary 889.50' 6.0"Veil. Orifice/Grate C= 0.600 Primary OutFlow Max=0.48 cfs @ 12.70 hrs HW=890.01' (Free Discharge) t-1=Orifice/Grate (Orifice Controls 0.48 cfs @ 2.44 fps) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 9 Pond 10P: (new Pond) Hydrograph ■Inflow II 6 552cfs I ■Primary inflow Area=3.039 ac 5� Peak EIev=890.01' Storage=6,242 cf 4 3-/ 0 7 LL - 2� 1� 0.48 cfs 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 10P: (new Pond) Stage-Discharge / ■Primary II 892 — 8 0 891--/ - -- d w 890 Orifice/Grate / 7 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 10 Pond 10P: (new Pond) Stage-Area-Storage Surface/Horizontal/wetted Area(sq-ft) 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 0 Surface` ■Storage 1 8921 0 891 w 8901/ Custom Stage Data 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 11 Summary for Pond 12P: (new Pond) Inflow Area = 1.039 ac, 64.30% Impervious, Inflow Depth = 1.45" for 2yr24hr event Inflow = 2.31 cfs @ 12.02 hrs, Volume= 0.125 af Outflow = 0.78 cfs @ 12.18 hrs, Volume= 0.125 af, Atten= 66%, Lag= 9.8 min Primary = 0.78 cfs @ 12.18 hrs, Volume= 0.125 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 889.93' @ 12.18 hrs Surf.Area= 2,232 sf Storage= 1,730 cf Plug-Flow detention time=49.8 min calculated for 0.125 af(100% of inflow) Center-of-Mass det. time= 50.0 min ( 877.5 - 827.5 ) Volume Invert Avail.Storage Storage Description #1 889.00' 8,468 cf Custom Stage Data(Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.00 1,486 0 0 890.00 2,288 1,887 1,887 891.00 3,250 2,769 4,656 892.00 4,373 3,812 8,468 Device Routing Invert Outlet Devices #1 Primary 889.00' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=0.78 cfs @ 12.18 hrs HW=889.93' (Free Discharge) t-1=Orifice/Grate (Orifice Controls 0.78 cfs @ 3.97 fps) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 12 Pond 12P: (new Pond) Hydrograph / ■Inflow II 2.31 cfs I 9 Primary Inflow Area=1 .039 ac Peak EIev=889.93' 2 Storage=1 ,730 cf w LL I oars cfs 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 12P: (new Pond) Stage-Discharge 892 0 Primary 891 m - m c O is N W 890-' Orifice/Grate�. 889 0 1 Discharge (cfs) I DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 13 Pond 12P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 0 Surface • 0 Storage 892- - : 891: . 890 Custom Stage Data 889 0 1.000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-northern 2 Type Il 24-hr 2yr24hr Rainfall=2.66" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 14 Summary for Pond 16P: Total Release [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 4.078 ac, 52.16% Impervious, Inflow Depth > 1.24" for 2yr24hr event Inflow = 1.22 cfs @ 12.25 hrs, Volume= 0.422 af Primary = 1.22 cfs @ 12.25 hrs, Volume= 0.422 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Pond 16P: Total Release Hydrograph / •Inflow 1.22 cfs I ®Primary I'22of; Inflow Are a=4.078 ac 1y a , LL o ����/����i�iiii�iiiiiiiiiiiiiiiiiiiiiiii,�iii��i�i�i��iiiiiiiii�iiii�ieieiiii�ii 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 15 Time span=0.00-120.00 hrs, dt=0.01 hrs, 12001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 1 DEV: DRY POND A Runoff Area=3.039 ac 48.01% Impervious Runoff Depth=2.14" Tc=10.0 min CN=83 Runoff=9.98 cfs 0.542 af Subcatchment 5S: DRY POND B Runoff Area=1.039 ac 64.30% Impervious Runoff Depth=2.48" Tc=10.0 min CN=87 Runoff=3.91 cfs 0.215 af Pond 10P: (new Pond) Peak EIev=890.44' Storage=12,205 cf Inflow=9.98 cfs 0.542 af Outflow=0.78 cfs 0.541 af Pond 12P: (new Pond) Peak EIev=890.50' Storage=3,158 cf Inflow=3.91 cfs 0.215 af Outflow=1.06 cfs 0.215 af Pond 16P: Total Release Inflow=1.81 cfs 0.755 af Primary=1.81 cfs 0.755 af Total Runoff Area =4.078 ac Runoff Volume =0.757 af Average Runoff Depth =2.23" 47.84% Pervious = 1.951 ac 52.16% Impervious =2.127 ac DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 16 Summary for Subcatchment 1 DEV: DRY POND A Runoff = 9.98 cfs @ 12.02 hrs, Volume= 0.542 af, Depth= 2.14" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 10yr-24hr Rainfall=3.83" Area (ac) CN Description * 1.383 84 1/8 acre lots, 65% imp, HSG C 1.096 74 >75% Grass cover, Good, HSG C 0.560 98 Paved parking, HSG C 3.039 83 Weighted Average 1.580 51.99% Pervious Area 1.459 48.01% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, TR-20 CALC SHEET Subcatchment 1 DEV: DRY POND A Hydrograph 11- O Runoff 9.98 10 Type II 24-hr 9 j 10yr-24hr Rainfall=3.83" Runoff Area=3.039 ac 71 / Runoff Volume=0.542 of 6_ Runoff Depth=2.14" 3 / Tc=10.0 min 4. f CN=83 3. 0+ 3��� j!�i�i��ii������������������������������������������������������������������������������ 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 17 Summary for Subcatchment 5S: DRY POND B Runoff = 3.91 cfs @ 12.01 hrs, Volume= 0.215 af, Depth= 2.48" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 10yr-24hr Rainfall=3.83" Area (ac) CN Description * 0.534 84 1/8 acre lots, 65% imp, HSG C 0.184 74 >75% Grass cover, Good, HSG C 0.321 98 Paved parking, HSG C 1.039 87 Weighted Average 0.371 35.70% Pervious Area 0.668 64.30% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: DRY POND B Hydrograph / B Runoff 41/ 13.916 I Type II 24-hr 10yr-24hr Rainfall=3.83" 3_/ Runoff Area=1.839 ac / Runoff Volurne=0.215 of 16- j Runoff Depth=2.48" 2LT_ - j Tc=10.0 min CN=87 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 18 Summary for Pond 10P: (new Pond) Inflow Area = 3.039 ac, 48.01% Impervious, Inflow Depth = 2.14" for 10yr-24hr event Inflow = 9.98 cfs @ 12.02 hrs, Volume= 0.542 af Outflow = 0.78 cfs @ 12.73 hrs, Volume= 0.541 af, Atten= 92%, Lag= 42.9 min Primary = 0.78 cfs @ 12.73 hrs, Volume= 0.541 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.44' @ 12.73 hrs Surf.Area= 14,522 sf Storage= 12,205 cf Plug-Flow detention time= 295.5 min calculated for 0.541 af(100% of inflow) Center-of-Mass det. time= 294.2 min ( 1,119.5 - 825.3 ) Volume Invert Avail.Storage Storage Description #1 889.50' 49,417 cf Custom Stage Data (Prismatic)Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.50 11,478 0 0 890.50 14,720 13,099 13,099 891.50 18,144 16,432 29,531 892.50 21,628 19,886 49,417 Device Routing Invert Outlet Devices #1 Primary 889.50' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=0.78 cfs @ 12.73 hrs HW=890.44' (Free Discharge) 4-1=Orifice/Grate (Orifice Controls 0.78 cfs @ 4.00 fps) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 19 Pond 10P: (new Pond) Hydrograph II Inflow 11: 9.98 cls - ■Primary 10 Inflow Area=3.039 ac 9f Peak Elev-390.44' 8 Storage=12;205 cf 7 u 6V • 0 5z/ w 4V/ 2i:/// 1 0.78 ors 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 10P: (new Pond) Stage-Discharge 0 Primary 892 a - 0 891- . d w 890 /�` Orifice/Grate 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 20 Pond 10P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 0 Surface` / Storage // 892 �� 0 891 w w - 890-" Custo,mSt po,Deta Z. . , Z. , Z. . Z. / 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 21 Summary for Pond 12P: (new Pond) Inflow Area = 1.039 ac, 64.30% Impervious, Inflow Depth = 2.48" for 10yr-24hr event Inflow = 3.91 cfs @ 12.01 hrs, Volume= 0.215 af Outflow = 1.06 cfs @ 12.21 hrs, Volume= 0.215 af, Atten= 73%, Lag= 11.6 min Primary = 1.06 cfs @ 12.21 hrs, Volume= 0.215 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.50' @ 12.21 hrs Surf.Area= 2,771 sf Storage= 3,158 cf Plug-Flow detention time= 48.0 min calculated for 0.215 af(100% of inflow) Center-of-Mass det. time= 47.8 min ( 859.9- 812.1 ) Volume Invert Avail.Storage Storage Description #1 889.00' 8,468 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.00 1,486 0 0 890.00 2,288 1,887 1,887 891.00 3,250 2,769 4,656 892.00 4,373 3,812 8,468 Device Routing Invert Outlet Devices #1 Primary 889.00' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.06 cfs @ 12.21 hrs HW=890.50' (Free Discharge) L1=Orifice/Grate (Orifice Controls 1.06 cfs @ 5.39 fps) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 22 Pond 12P: (new Pond) Hydrograph / •Inflow I J 3.91 cfs ■Primary Peak EIev=890.50' 3/ Storage=3,158 cf 0 2� LL [1.06 cfs 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 12P: (new Pond) Stage-Discharge 892 ■Primary 891 0 0 Co > 890 Orifice/Grate 889 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Pane 23 Pond 12P: (new Pond) Stage-Area-Storage Surface/Horizontal(Wetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 ❑Surface Storage 892_/ 8911/ a� 0 iu w 890 889 --Custom Stage Data / / / / / ( /r 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 10yr-24hr Rainfall=3.83" Prepared by {enter your company name here) Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 24 Summary for Pond 16P: Total Release [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 4.078 ac, 52.16% Impervious, Inflow Depth > 2.22" for 10yr-24hr event Inflow = 1.81 cfs @ 12.28 hrs, Volume= 0.755 of Primary = 1.81 cfs @ 12.28 hrs, Volume= 0.755 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Pond 16P: Total Release Hydrograph ILL ow 2 1.81 cfs I mary '1B1c� Inflow Area=4.078 ac i • • 1J 2 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here) Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 25 Time span=0.00-120.00 hrs, dt=0.01 hrs, 12001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 1 DEV: DRY POND A Runoff Area=3.039 ac 48.01% Impervious Runoff Depth=2.92" Tc=10.0 min CN=83 Runoff=13.53 cfs 0.740 of Subcatchment 5S: DRY POND B Runoff Area=1.039 ac 64.30% Impervious Runoff Depth=3.30" Tc=10.0 min CN=87 Runoff=5.14 cfs 0.286 af Pond 10P: (new Pond) Peak Elev=890.78' Storage=17,291 cf Inflow=13.53 cfs 0.740 af Outflow=0.96 cfs 0.739 af Pond 12P: (new Pond) Peak Elev=890.91' Storage=4,355 cf Inflow=5.14 cfs 0.286 af Outflow=1.22 cfs 0.286 af Pond 16P: Total Release Inflow=2.14 cfs 1.025 af Primary=2.14 cfs 1.025 af Total Runoff Area =4.078 ac Runoff Volume = 1.026 af Average Runoff Depth =3.02" 47.84% Pervious = 1.951 ac 52.16% Impervious =2.127 ac DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 26 Summary for Subcatchment 1 DEV: DRY POND A Runoff = 13.53 cfs @ 12.01 hrs, Volume= 0.740 af, Depth= 2.92" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 25yr-24hr Rainfall=4.72" Area (ac) CN Description * 1.383 84 1/8 acre lots, 65% imp, HSG C 1.096 74 >75% Grass cover, Good, HSG C 0.560 98 Paved parking, HSG C 3.039 83 Weighted Average 1.580 51.99% Pervious Area 1.459 48.01% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, TR-20 CALC SHEET Subcatchment 1 DEV: DRY POND A // Hydrograph 15, 0 Runoff 14'" 11353 cfs I 13 / l ype it 24-hr 12J 25yr-24hr Rainfall=4.72" 11-V Runoff Area-3.039 ac 10V 9=/ Runoff Volume=0.740 af 2. 8� qu noff Depth=2.92" 0 7V 00 Tc=10.0 min . .. CN=83 3-1/ -",'//. 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 27 Summary for Subcatchment 5S: DRY POND B Runoff = 5.14 cfs @ 12.01 hrs, Volume= 0.286 af, Depth= 3.30" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Type II 24-hr 25yr-24hr Rainfall=4.72" Area (ac) CN Description * 0.534 84 1/8 acre lots, 65% imp, HSG C 0.184 74 >75% Grass cover, Good, HSG C 0.321 98 Paved parking, HSG C 1.039 87 Weighted Average 0.371 35.70% Pervious Area 0.668 64.30% Impervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (ft/sec) (cfs) 10.0 Direct Entry, Subcatchment 5S: DRY POND B Hydrograph ®Runoff 5.14 es, 5-:/ Type II 24-hr 25yr-24hr Rainfall=4.72" Runoff Area=1.039 ac Runoff Volume=0.286 af 3-" j Runoff Depth=3.30" Tc=10.0 min 21 j CN=87 - r • 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 28 Summary for Pond 10P: (new Pond) Inflow Area = 3.039 ac, 48.01% Impervious, Inflow Depth = 2.92" for 25yr-24hr event Inflow = 13.53 cfs @ 12.01 hrs, Volume= 0.740 af Outflow = 0.96 cfs @ 12.82 hrs, Volume= 0.739 af, Atten= 93%, Lag= 48.6 min Primary = 0.96 cfs @ 12.82 hrs, Volume= 0.739 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.78' @ 12.82 hrs Surf.Area= 15,665 sf Storage= 17,291 cf Plug-Flow detention time= 297.4 min calculated for 0.739 af(100% of inflow) Center-of-Mass det. time= 296.8 min ( 1,113.3 - 816.4 ) Volume Invert Avail.Storage Storage Description #1 889.50' 49,417 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.50 11,478 0 0 890.50 14,720 13,099 13,099 891.50 18,144 16,432 29,531 892.50 21,628 19,886 49,417 Device Routing Invert Outlet Devices #1 Primary 889.50' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=0.96 cfs @ 12.82 hrs HW=890.78' (Free Discharge) 4-1=Orifice/Grate (Orifice Controls 0.96 cfs @ 4.88 fps) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 29 Pond 10P: (new Pond) Hydrograph ■Inflow 15� 113.53 cfs( ■Primary 14: _ Inflow Area=3.039 ac 13Q 12y./ Peak Elev=890.78 11: Storage=17,291 cf 10� N 9:J .o.. 8� 05 7� LL -;-"/. - - 4: 5/' 20.96 cry 0- %A -_ i%/%//&./7/� �I//i/// //%//�////'////////� 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 10P: (new Pond) / Stage-Discharge ❑Primary' 892 d O 891• • -" Lu 890 Orifice/Grate / 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 30 Pond 10P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 0 Surface` ®Storage 1 // 8921 d _ 0 891 • w - 890 1/7 Custom Stage Data 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here) Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 31 Summary for Pond 12P: (new Pond) Inflow Area = 1.039 ac, 64.30% Impervious, Inflow Depth = 3.30" for 25yr-24hr event Inflow = 5.14 cfs @ 12.01 hrs, Volume= 0.286 of Outflow = 1.22 cfs @ 12.23 hrs, Volume= 0.286 af, Atten= 76%, Lag= 12.8 min Primary = 1.22 cfs @ 12.23 hrs, Volume= 0.286 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 890.91' @ 12.23 hrs Surf.Area= 3,160 sf Storage= 4,355 cf Plug-Flow detention time= 48.9 min calculated for 0.286 of(100% of inflow) Center-of-Mass det. time= 49.1 min ( 853.0 - 804.0 ) Volume Invert Avail.Storage Storage Description #1 889.00' 8,468 cf Custom Stage Data (Prismatic)Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.00 1,486 0 0 890.00 2,288 1,887 1,887 891.00 3,250 2,769 4,656 892.00 4,373 3,812 8,468 Device Routing Invert Outlet Devices #1 Primary 889.00' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.22 cfs @ 12.23 hrs HW=890.91' (Free Discharge) t-1=Orifice/Grate (Orifice Controls 1.22 cfs @ 6.20 fps) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 32 Pond 12P: (new Pond) Hydrograph / ■Inflow 5.14 cfs I ■Primary Inflow Area=1 .039 ac Peak Elev=890.91' Storage=4,355 cf 3 3 ' 0 LL 2 ,22 cfs // 0 6a 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 12P: (new Pond) Stage-Discharge 892 ■Primary 891-" _ c 0 a a _ W / 890-/ 889 r -/ 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 33 Pond 12P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 0 Surface` 0 Storage l 892- 891— _ 92 891— _ m _ m 0 co Lu 890 Custom Stage Data 889 0 1,000 2.000 3,000 4,000 5,000 6,000 7,000 8,000 Storage(cubic-feet) I DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 25yr-24hr Rainfall=4.72" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 34 Summary for Pond 16P: Total Release [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 4.078 ac, 52.16% Impervious, Inflow Depth > 3.02" for 25yr-24hr event Inflow = 2.14 cfs @ 12.31 hrs, Volume= 1.025 of Primary = 2.14 cfs @ 12.31 hrs, Volume= 1.025 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Pond 16P: Total Release Hydrograph / •Inflow 2.14 cfs ■Primary 2.14 cfs • - — • — • • • 2 oz l O LL 1-•� 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) DEVELOPED CONDITIONS-106th-revised-northern 2 Type Il 24-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 35 Time span=0.00-120.00 hrs, dt=0.01 hrs, 12001 points Runoff by SCS TR-20 method, UH=SCS, Weighted-CN Reach routing by Stor-Ind method - Pond routing by Stor-Ind method Subcatchment 1 DEV: DRY POND A Runoff Area=3.039 ac 48.01% Impervious Runoff Depth=4.52" Tc=10.0 min CN=83 Runoff=20.55 cfs 1.145 of Subcatchment 5S: DRY POND B Runoff Area=1.039 ac 64.30% Impervious Runoff Depth=4.96" Tc=10.0 min CN=87 Runoff=7.54 cfs 0.429 af Pond 10P: (new Pond) Peak Elev=891.41' Storage=27,917 cf Inflow=20.55 cfs 1.145 af Outflow=1.22 cfs 1.143 af Pond 12P: (new Pond) Peak Elev=891.61' Storage=6,862 cf Inflow=7.54 cfs 0.429 af Outflow=1.45 cfs 0.429 af Pond 16P: Total Release Inflow=2.64 cfs 1.573 af Primary=2.64 cfs 1.573 af Total Runoff Area =4.078 ac Runoff Volume = 1.574 af Average Runoff Depth =4.63" 47.84% Pervious = 1.951 ac 52.16% Impervious =2.127 ac DEVELOPED CONDITIONS-106th-revised-northern 2 Type II 24-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 38 Summary for Pond 10P: (new Pond) Inflow Area = 3.039 ac, 48.01% Impervious, Inflow Depth = 4.52" for 100yr-24hr event Inflow = 20.55 cfs @ 12.01 hrs, Volume= 1.145 af Outflow = 1.22 cfs @ 13.02 hrs, Volume= 1.143 af, Atten= 94%, Lag= 60.2 min Primary = 1.22 cfs @ 13.02 hrs, Volume= 1.143 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 891.41' @ 13.02 hrs Surf.Area= 17,837 sf Storage= 27,917 cf Plug-Flow detention time= 328.8 min calculated for 1.143 af(100% of inflow) Center-of-Mass det. time= 328.1 min ( 1,132.1 - 804.0 ) Volume Invert Avail.Storage Storage Description #1 889.50' 49,417 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.50 11,478 0 0 890.50 14,720 13,099 13,099 891.50 18,144 16,432 29,531 892.50 21,628 19,886 49,417 Device Routing Invert Outlet Devices #1 Primary 889.50' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.22 cfs @ 13.02 hrs HW=891.41' (Free Discharge) L1=Orifice/Grate (Orifice Controls 1.22 cfs @ 6.20 fps) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Pegg 39 Pond 10P: (new Pond) Hydrograph 23� •Inflow 22: 12055crs ■Primary 21; Inflow Arca 3039 ac 19 Peak Etev=891 .41' 16 StoraJ e=2 i 917 cf 15; w 13- O 11� u_ 10_ 8 6 5 4 3, 2 1 2 ors 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 10P: (new Pond) Stage-Discharge / ❑Primary` 892- d _ O 891- S > _ m uw Orifice/Grate 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Pace 40 Pond 10P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 2,000 4,000 6,000 8,000 10,000 12,000 14,000 16,000 18,000 20,000 ❑Surface ■Storage //-. 892 a� a 0 891 • d w 890Y Custom Stage Data / 0 5,000 10,000 15,000 20,000 25,000 30,000 35,000 40,000 45,000 Storage(cubic-feet) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here) Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 41 Summary for Pond 12P: (new Pond) Inflow Area = 1.039 ac, 64.30% Impervious, Inflow Depth = 4.96" for 100yr-24hr event Inflow = 7.54 cfs @ 12.01 hrs, Volume= 0.429 af Outflow = 1.45 cfs @ 12.26 hrs, Volume= 0.429 af, Atten= 81%, Lag= 15.1 min Primary = 1.45 cfs @ 12.26 hrs, Volume= 0.429 af Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Peak Elev= 891.61' @ 12.26 hrs Surf.Area= 3,939 sf Storage= 6,862 cf Plug-Flow detention time= 54.2 min calculated for 0.429 af(100% of inflow) Center-of-Mass det. time= 54.1 min ( 846.6 - 792.6 ) Volume Invert Avail.Storage Storage Description #1 889.00' 8,468 cf Custom Stage Data (Prismatic)Listed below(Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (sq-ft) (cubic-feet) (cubic-feet) 889.00 1,486 0 0 890.00 2,288 1,887 1,887 891.00 3,250 2,769 4,656 892.00 4,373 3,812 8,468 Device Routing Invert Outlet Devices #1 Primary 889.00' 6.0"Vert. Orifice/Grate C= 0.600 Primary OutFlow Max=1.45 cfs @ 12.26 hrs HW=891.61' (Free Discharge) L1=Orifice/Grate (Orifice Controls 1.45 cfs @ 7.40 fps) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 42 Pond 12P: (new Pond) Hydrograph •Inflow IAsa its I D Primary 8 I�tlow Areal= 039 ac Peak EIev=891 .61' Storage=6,862 cf 5:LV w 3 4 o , LL 3 2 11.45 cfs 1.2Y 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) Pond 12P: (new Pond) Stage-Discharge 892 13 Primary 891--/` - m 0 .7 - > d 890-` fV V/`j Orifice/Grate / 889 0 1 Discharge (cfs) DEVELOPED CONDITIONS-106th-revised-northern 2 Type 1124-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 43 Pond 12P: (new Pond) Stage-Area-Storage Surface/Horizontal/Wetted Area(sq-ft) 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 0 Surface` Storage 1 892—/ 891 om _ m c - 0 w ^ 890 0 1,000 2,000 3,000 4,000 5,000 6,000 7,000 8,000 Storage(cubic-feet) r DEVELOPED CONDITIONS-106th-revised-northern 2 Type II 24-hr 100yr-24hr Rainfall=6.46" Prepared by {enter your company name here} Printed 8/24/2018 HydroCAD® 10.00 s/n 02840 ©2013 HydroCAD Software Solutions LLC Page 44 Summary for Pond 16P: Total Release [40] Hint: Not Described (Outflow=Inflow) Inflow Area = 4.078 ac, 52.16% Impervious, Inflow Depth > 4.63" for 100yr-24hr event Inflow = 2.64 cfs @ 12.38 hrs, Volume= 1.573 of Primary = 2.64 cfs @ 12.38 hrs, Volume= 1.573 af, Atten= 0%, Lag= 0.0 min Routing by Stor-Ind method, Time Span= 0.00-120.00 hrs, dt= 0.01 hrs Pond 16P: Total Release Hydrograph / •Inflow 264th 0 Primary 2.64thInflow Area=4.078 ac 2--" LL 0 0 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 Time (hours) III.STORM SEWER PIPE DESIGN I I Project: Westbridge Work Description: Initial Pipe Sizing for Legal Drain Notes on Initial Design: Upstream Restrictions is a 2'x 4'box culvert going under 106th Street Culvert Full Flow Capacity Culvert Under 106th Street Qx=Q*No.of Pipes 41.150 cfs Material n—values No.of Pipes 1 RCP 0.013 Q=1.486/n*R^(2/3)*A*S^(1/2) 41.150 cfs PVC 0.011 V=Q/A 5.14 fps HDPE 0.012 R=A/Pw 0.67 f CMP 0.024 Pw=2*L+2*H 12 f A=L*H 8 sf S=slope of culvert 0.35% n=manning's number 0.013 L=Length 4 H=Height 2 100-Yr Allowable Release Rate for site Site Acreage: 13.248 RNV Acreage to accommodate: 0.811 Total Site 14.059 100-yr Allowable Release Rate 0.3 cfs/acre 100-yr Allowable Release Rate 4.218 cfs Flow Rate for Pipe Design Culvert Full Flow Capacity 41.15 cfs 100-yr Allowable Release Rate 4.22 cfs 100-yr Calculated Release Rate 9.48 cfs Total Flow Calculated 50.63 cfs Pipe Full Flow Capacity Qx=Q*No.of Pipes 55.11 cfs Material n—values No.of Pipes 1 RCP 0.013 Q=1.486/n*RA(2/3)*A*SA(1/2) 55.11 cfs PVC 0.011 V=Q/A 5.73 fps HDPE 0.012 R=A/Pw 0.88 ft CMP 0.024 Pw=2*PIO*R 11.00 ft A=Pl()*RA2 9.62 sf S=slope of culvert 0.30% n=manning's number 0.013 R=Radius=1/2*D 1.75 Feet D=Diameter(inches) 42 Inches Summary of initial design requirements for relocated legal drain: The pipe will be a 42"RCP(County Surveyor has not allowed HDPE in past). The current box culvert is 2'(v)x 4'(h)and has a grade of 0.35%giving capacity flow rate of 41.15 cfs. The 100-yr allowable release rate from this site is 4.22 cfs,and the drainage calculations and limitations where detention may be placed gives a discharge rate of 9.48 cfs. The combined flows is 50.63 cfs. A 42"RCP set at 0.30%with no hydraulic jumps are incorporated due to vertical elevation challenges,the pipe will have a capacity of 55.1 cfs. The downstream discharge elevation is anticipated to be at 886.29 and upstream invert elevation of 888.09 with 720 If of pipe to be installed. With minimum pipe cover and incorporating pipe size,the minimum finish floor elevations for the site will be in the 896.25+/- elevations. I IV.STORM WATER QUALITY -- \\ _ _ 1 ° -i--- , i I ./ i . 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