2003-06-30_PERMIT FILE - C1981010A ‎(3)‎

• Permit No: C1981010A
• IBM Index Class Name: Permit File
• Doc Date: 6/30/2003
• Doc Name: East Pyeatt Hydrologic Model
• Section_Exhibit Name: Appendix Q Section VIII
• Media Type: D
• Archive: Yes

Watershed Hydrology and Sedimentology Parameters
East Pyeatt (1,1,1)
Topsoiled and One Year Two+ Years
Undisturbed Active Reseeded Growth Growth Total

Area (acres) 94.6 0 0 0 74.4 169
Curve Number 47 87 86 80 67 63
Runoff (in) 0.00 0.47 0.43 0.24 0.03 0.01
Runoff Vol (ac-ft) 0.00 0.00 0.00 0.00 0.19 0.19
Hydraulic Length (ft) 6740
Vertical Distance (ft) 850
Slope (%) 12.6%
Time of Concentration 0.377
K Factor 0.25 0.14 0.25 0.25 0.25 0.25
Lambda(ft) 1600
Theta (degrees) 16.30
LS Factor
C Factor 0.01 1,00 0.45 0.26 0.18 0.08
P Factor 1.00 1.00 0.60 0,60 0.60 0.82
CP Factor 0.01 1.00 0.27 0.16 0.11 0.07
Unit Hydrograph Shape: medium

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Topsoiled and One Year Two+ Years
Undisturbed Active Reseeded Growth Growth Total

Area (acres) 8.7 0 0 0 82.9 91.6
Curve Number 47 87 86 80 67 67
Runoff (in) 0.00 0.47 0.43 0.24 0.03 0.03
Runoff Vol (ac-ft) 0.00 0.00 0.00 0.00 0.21 0.21
Hydraulic Length (ft) 6300
Vertical Distance (ft) 825
Slope (%) 13.1 %
Time of Concentration 0.443
K Factor 0.25 0.14 0.25 0.25 0.25 0.25
Lambda(ft) 1200
Theta (degrees) 14.20
LS Factor
C Factor 0.01 1.00 0.45 0.26 0.18 0.16
P Factor 1.00 1.00 0.60 0.60 0.60 0.64
CP Factor 0.01 1.00 0.27 0.16 0.11 0.10
Unit Hydrograph Shape: medium

pRS ~I3b ~03