2011-10-31_PERMIT FILE - C1981025A ‎(2)‎

• Permit No: C1981025A
• IBM Index Class Name: Permit File
• Doc Date: 10/31/2011
• Doc Name: Final Engineering Calculations
• Section_Exhibit Name: 4.0 Appendix 4-B
• Media Type: D
• Archive: Yes

• -- Watershed data for watershed-#2 - ~ Area 6
Curve number 74.0
Area = 12.5 acres
Hydraulic length = 1300.0 feet
Elevation change = 840.0 feet
Concentration time = 0.05 hours
Concentration time type = SCS Upland Curves
Unit hydrograph type = Forested
Total Area = 186.5 acres
-- Storm Data - 10 vear event
Total precipitation = 1.8 inches
Storm type = SCS Type 2 storm, 24 hour storm
Peak discharge = 9.82 cfs
Discharge volume = 2.58 acre feet
•
L J
4-B:13a October 1994