PERMFILE46452

• Permit No: C1981019
• IBM Index Class Name: Permit File
• Doc Date: 9/2/2004
• Doc Name: Attachment 10 to 12
• Section_Exhibit Name: Exhibit 07 Gulch A Pond - 004A
• Media Type: D
• Archive: No

SEDCAD 4 for Windows
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10
• Subwatershed Hydro%gy Detai/.-

Stru
#
SWS
#
SWS Area
(ac) Time of
Conc

(hrs)
Musk K
(hrs)
Musk X
Curve
Number
UHS Peak
Discharge

(cfs) Runoff
Volume

(ac-ft)
#2 1 303.630 0.498 0.498 0.388 60.000 M 20.81 4.397
303.630 I 20.59 4.397
#1 1 90.850 0.362 0.362 0.353 56.000 M 3.11 0.743
2 33.960 0.269 0.269 0.392 56.000 M 1.26 0.278
124.810 4.20 1.021
#3 1 106.380 0.192 0.192 0.403 55.000 M 3.49 0.731
2 115.090 0.486 0.486 0.350 54.000 M 2.32 0.653
649.910 29.01 6.501
#4 1 68.180 0.245 0.245 0.410 52.000 M 0.93 0.246
718.090 29.81 7.047
Subwatershed Sedimento%gy Detai/;

Stru
#
SWS
#

Soil K

L (ft)

S (%)

C

P

PS #
Sediment
( )
tons Peak
Sediment
Conc.

(mg/1) Peak
Settleable
Conc

(ml/I)
24VW
(ml/I)
#2 1 0.280 2,333.00 6.80 0.1100 0.3800 1 55.8 14,975 1.55 1.21
~' 55.5 14,901 1.50 1.16
#1 1 0.280 1,425.00 13.60 0.0100 0.4100 1 1.8 2,736 0.51 0.43
2 0.280 562.50 18.70 0.0100 0.3800 1 0.5 2,029 0.43 0.35
~', 2.3 2,520 0.49 0.41
#3 1 0.280 1,575.00 21.70 0.0100 0.4200 1 ~ 3.7 5,726 1.78 1.44
2 0.280 1,025.00 15.70 0.0200 0.4900 1 3.4 5,422 1.89 1.68
64.9 11,759 1.52 1.13
#4 1 0.280 800.00 26.00 0.0400 0.6300 1 4.7 18,939 7.29 6.65
i
69.6
11,926
1.75 _
1.33
Subwatershed Time of Concentration Detai/s:
•
Stru SWS Land Flow Condition Slope (%) Vert. Dist. Horiz. Dist. Velocity Time (hrs)
# # (ft) (ft) (fps)
#1 1 3. Short grass pasture 8.11 150.00 1,850.00 2.270 0.226
6. Grassed waterway 8.95 85.00 950.00 4.480 0.058
Filename: GulchA-SpillwayDesign.sc4 Printed OS-11-2002