Drainage Area MapX
X
CB-1
CB-2
CB-3
YD-3A
YD-3B
YD-3C
CB-5
CB-4
CO
CO
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YD-5A
1"=
DRAINAGE AREA MAP - DETENTION SIZING
40'040'
-PERVIOUS AREA
ISSUANCES
DRAWN BY
PROFESSIONAL
PROJECT MANAGER
FILE NUMBER
CHECKED BY
18
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70050012
JPM
JPM
JRS
DRAINAGE AREA
MAP - DETENTION
SIZING
DRAINAGE AREA PERVIOUS AREA IMPERVIOUS AREA RUNOFF CURVE NUMBER RATIONAL RUNOFF COEFFICIENT
TOTAL PROPERTY AREA 1.23 Ac 0.50 Ac 0.73 Ac 91 0.59
* PERVIOUS AREA IS OPEN SPACE IN GOOD CONDITION - HYDROLOGIC SOIL GROUP D
*IMPERVIOUS AREA IS PAVED PARKING LOTS, ROOFS, AND DRIVEWAYS - HYDROLOGIC SOIL GROUP D
*DETENTION CALCULATIONS FOR ARIA APARTMENT DETENTION BASIN ASSUMED A RUNOFF CURVE NUMBER OF 92.8 FOR THIS PROPERTY.
-IMPERVIOUS AREA