PERMFILE127221

• Permit No: C1982057A
• IBM Index Class Name: Permit File
• Doc Date: 3/1/2007
• Section_Exhibit Name: Tab 20 Attachment 20-1 Part 2
• Media Type: D
• Archive: Yes

SEDCAD 4 for Windows
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Subwatershed Hydro/ogy Detai/;

Stru
#
SWS
#
SWS Area
(ac) Time of
Conc
(hrs)
Musk K
(hrs)
Musk X
Curve
Number
UHS Peak
Discharge
(6s) Runoff
Volume
(ac-ft)
#S 1 5.480 0.066 0.000 0.000 86.000 F 3.84 0.287
5.480 3.84 0.287
#3 1 3.200 0.033 0.000 0.000 71.000 M 0.51 0.042
3.200 0.51 0.042
#1 1 2.700 0.045 0.000 0.000 71.000 M 0.43 0.035
~, 2.700 0.43 0.035
#2 1 10.800 0.043 0.000 0.000 48.000 M 0.00 0.000
13.500 0.43 0.035
#4 ~ 22.180 4.79 0.365
Subwatershed Time of Concentration Detai/s;
Stru
# SWS
# Land Flow Condition Slope (%) Vert. Dist.
(ft) Horiz. Dist.
(ft) Velocity
(fps) Time (hrs)
#1 1 3. Short grass pasture 10.67 40.00 375.00 2.610 0.039
8. Large gullies, diversions, and low
flowing streams 18.12 50.00 276.00 12.760 0.006
#1 1 Time of Concentration: 0.045
#2 1 5. Nearly bare and unfilled, and
alluvial valley fans 12.50 25.00 200.00 3.530 0.015
3. Short grass pasture 17.66 25.00 140.00 3.380 0.011
6. large gullies, diversions, and low
flowing streams 17.49 138.00 789.00 12.540 0.017
#2 1 Time of Concentration: 0.043
#3 1 3. Short grass pasture 7.89 15.00 190.00 2.240 0.023
8. Large gullies, diversions, and low
Flowing streams 20,45 100.00 489.00 13.560 0.010
#3 1 Time of Concentration: 0.033
#S 1 3. Short grass pasture 9.43 30.00 318.00 2.450 0.036
7. Paved area and small upland
gullies 5.00 6.27 125.50 4.500 0.007
3. Short grass pasture 18.07 30.00 166.00 3.400 0.013
7. Paved area and small upland
gullies 18.63 60.00 322.00 8.680 0.010
#5 1 Time of Concentration: 0.066

Filename: IIW PM-4-4a-4b-4c TR55 12_OB_O6.sc4
TR-55 20-1-197
Printed 12-08-2006
Revised 12/06