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2012-02-28_REVISION - M1980244 (73)
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2012-02-28_REVISION - M1980244 (73)
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Last modified
8/24/2016 4:49:12 PM
Creation date
3/15/2012 1:40:25 PM
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Template:
DRMS Permit Index
Permit No
M1980244
IBM Index Class Name
REVISION
Doc Date
2/28/2012
Doc Name
VOL 5, Appendix F: Surface Water Hydrology
From
CC&V
To
DRMS
Type & Sequence
AM10
Email Name
TC1
Media Type
D
Archive
No
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Cripple Creek and Victor <br />Phase 1 VLF <br />Lag Time Calculation Using Natural Resources Conservation Service TR -55 <br />Watershed Contribution Area 1 <br />Sheet Flow <br />Mannings n = 0.24 <br />Flow Length (ft, max 300 ft) = 300 <br />2 -year 24 hr Rainfall, P2 (in) = 1.8 <br />Land Slope, s ( ft/ft) = 0.183 <br />Tt (hr) = 0.315 <br />Tt (min) = 18.9 <br />Shallow Concentrated Flow <br />Flow Length, L (ft) = 2003 <br />Watercourse Slope (ft/ft) = 0.227 <br />Average Velocity, V (ft/sec, fig 3 -1) = 8 <br />Tt (hr) = 0.070 <br />Tt (min) = 4.2 <br />Watershed or subarea Tc = <br />Lag time (hr) = <br />Lag time (min) = <br />Channel Flow <br />Cross Sectional Flow Area, a (ft = 56 <br />Wetted Perimiter, p„, (ft) = 25.5 <br />Hydraulic Radius, r = a/p, (ft) = 2.20 <br />Channel Slope, s ( ft/ft) = 0.005 <br />Manning's n = 0.035 <br />V (ft/sec) = 5.09 <br />Flow Length, L (ft) = 1082 <br />Tt (hr) = 0.059 <br />Tt (min) = 3.5 <br />0.444 <br />0.266 <br />15.97 <br />T = 0.007 (n1) <br />t P 0.5 s 0.4 <br />2 <br />L <br />T t <br />3 600 V <br />1.49 r 2/3s1/2 V = <br />L <br />T = <br />n <br />3600 V <br />
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