PERMFILE42034

• Permit No: C1981010
• IBM Index Class Name: Permit File
• Doc Date: 6/30/2003
• Doc Name: Oak Hydrologic Model
• Section_Exhibit Name: Appendix Q Section XXVI
• Media Type: D
• Archive: No

• Watershed Hydrology and Sedimentology Parameters
Oak (1, 1, f)

Undisturbed
Active Topsoiled and
Reseeded One Year
Growth Two+ Years
Growth
Total
Area (acres) 0 33.8 28.7 20.8 13.3 96.6
Curve Number 47 87 86 80 67 84
Runoff (in) 0.00 0.47 0.43 0.24 0.03 0.35
Runoff Vol (ac-ft) 0.00 1.32 1.03 0.42 0.03 2.80
Hydraulic Length (ft) 5600
Vertical Distance (ft) 735
Slope (%) 13.1%
Time of Concentration
K Factor 0.25 0.14 025 0.25 0.25 0.21
Lamlxla(ft) 960
Theta (degrees) 12.50
LS Factor
C Factor 0.01 1.00 0.45 0.26 0.18 0.56
P Factor 1.00 1.00 0.60 0.60 0.60 0.74
CP Factor 0.01 1.00 0.27 0.16 0.11 0.42
Unit Hydrograph Shape: medium

•
Oak (1,2,1)
Topsoiled and One Year Two+ Years
Undisturbed Active Reseeded Growth Growth Total

Area (acres) 12.9 34.9 12.4 29.5 41 130.7
Curve Number 47 87 86 80 67 80
Runoff (in) 0.00 0.47 0.43 0.24 0.03 0.23
Runoff Vol (ac-ft) 0.00 1.37 0.44 0.59 0.10 2.50
Hydraulic Length (ft) 4960
Vertical Distance (ft) 655
Slope (%) 13.2%
Time of Concentration
K Factor 0.25 0.14 0.25 0.25 0.25 0.22
Lambda(ft) 980
Theta (degrees) 12.20
LS Factor
C Factor 0.01 1.00 0.45 0.26 0.18 0.43
P Factor 1.00 1.00 0.60 0.60 0.60 0.75
CP Factor 0.01 1.00 0.27 0.16 0.11 0.32
Unit Hydrograph Shape: medium
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~R~ (r~3o/U3