20070070 Ver 2_Worksheets_20070529

Project Name: Louisburg Pla.
Project No. DWQ 07-0070v2
Shallow WL 1
SUBMITTED DESIGN: REQUIRED DESIGN.•
elevations
Permanent Pool (ft) 271 3
Temporary Pool (ft) 272 1 ft. depth ok
areas
Permanent Pool SA (sq ft) 25981 25601 sq. ft. ok
Drainage Area (ac) 24.26
Impervious Area (ac) 14.67 60.5 % -
Forebay (ft2) 3913 15.061006 % ok
High Marsh (ft2) 8984 34.6 % ok
Low Marsh (ft2) 9245 35.6 % ok
Micropool (ft2) 3881 14.937839 % ok
100.1617
volumes
Temporary Pool (cu ft) 52330 52330 cu. ft. check tempo
other parameters
SA/DA 2.4 2.42 -
Orifice Diameter (in) 4 0.30 cfs drawdown -
Design Rainfall (in) 1 2.0 day drawdown ok
Linear Interpolation of Correct SA/DA***
3 ft. Permanent Pool Depth
Im ervious SA/DA from Table
Next Lowest 60 _ 2.4,
Project Impervious 60.5 2.42
Next Highest 70 2.88
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Project Name: Louisburg Pla.
Project No. DWQ 07-0070x2
Shallow WL 2
SUBMITTED DESIGN: REQUIRED DESIGN:
elevations
Permanent Pool (ft) 260 3
Temporary Pool (ft) 261 1 ft. depth ok
areas
Permanent Pool SA (sq ft) 19298 18270 sq. ft. ok
Drainage Area (ac) 17.12
Impervious Area (ac) 10.45 61.0 % -
Forebay (ft2) 2950 15.286558 % ok
High Marsh (ft2) 6920< 35.9 % ok
Low Marsh (ft2) 6823 35.4 % ok
Micropool (ft2) 2765 14.32791 % ok
100.8291
volumes
Temporary Pool (cu ft) 37247 37247 cu. ft. check tempo
other parameters
SA/DA 2.4 2.45 -
Orifice Diameter (in) 2 0.07 cfs drawdown -
Design Rainfall (in) 1 5.8 day drawdown check drawG
Linear Interpolation of Correct SA/DA
3 ft. Permanent Pool Depth
Im ervious SA/DA from Table
Next Lowest 60 2.4
Project Impervious 61.0 2.45
Next Highest 70 2.88