PERMFILE47360

• Permit No: C1980001
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: SEDCAD Runs for Culverts
• Section_Exhibit Name: 3.5 APPENDIX 3.5-A ‎(Continued)‎
• Media Type: D
• Archive: No

For Culvert TA - 2
According to the Weighted Q Method on the Areas listed
Acres cfs
Disturbed Area 6 1.4 1.5
Disturbed Area 9 0.4 0.5
Disturbed Area 11 0.7 0.8
Undisturbed Area 24 1_7 0.0
TOTAL 4.2
Weighted Q = ~ = 0.7 cfs
cfs x acres
2.1
0.2
0.56
0
2.66
By channeling 0.7 cfs for the Weighted "Q" Areas and Dist bed
Areas 7. 8, 8 l0 and Undisturbed Areas 23,25, & 26 to culvert TA-2
the following "Q" for the area is found by tag time (Hrs) _
0.00014 (HL) (SC -0.5)
Channel Lag Actual
Peak Distance Slope Time Lag
cfs HL ft Sc % Hrs cfs
Disturbed Area 7 1.7 1885 9 0.088 1.5
Disturbed Area 8 1.3 1195 8 0.059 1.2
Weighted "Q" Area 0.7 1160 17 0.039 0.7
Undisturbed Area 25 0 995 18 0
Undisturbed Area 23 0 1430 9 0
Undisturbed Area 26 0 425 8 0
Disturbed Area 10 1.2 160 9 0.007 1_2
TOTAL 4.6
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