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PERMFILE47797
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PERMFILE47797
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Entry Properties
Last modified
8/24/2016 10:49:49 PM
Creation date
11/20/2007 1:18:43 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981010
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
DESIGN OF TEMPORARY DIVERSIONS
Section_Exhibit Name
APPENDIX T
Media Type
D
Archive
No
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<br />Minimum elevation: 6,448 ft. <br />Maximum elevation: 7,664 ft. <br />Watershed Height: 1,216 ft. <br />Watershed area: 25,760,000 ft2 591.4 acres <br />• <br />C25 5,750 LC25 = 2,880 ft. <br />CSO ~ 7,055 ~C50 5,640 ft. <br />C75 = 7,360 I.C75 5,520 ft. <br />TEMPORARY DIVERSION DITCH A-1 <br />Peak Flov Detezmination <br /> <br />i(PR 7 ia86 <br />MINED LAND <br />~ECLAM.4TICN DIV!SIO!~! <br />Average slope: 0.17 16 .6x <br />Slope adjustment factor: 1.01 <br />Hydraulic length: 11,040 ft <br />Curve number: 70 <br />Rainfall 2-year, 24-hour event: 1.1 in. <br />Runoff: 0.013 in. <br />Equivalent area: 753.6 ac. <br />Equivalent peak discharge: 280 cfs <br />Peak discharge: 221.9 cfs/in <br />(221.9 cfs/in)(0.013 in) = 2.9 cfe <br />Ditch Design <br />D e / Orr 0375: C.42 FT V - ~ 1.486 \ r tit tlit = 4.3 FT/f <br />/ <br /> <br />n = O.OSO r o A/P a 0. <br />21 FT <br />0 = 2.9 CFS ~ A e 0.71 FT t <br />K = 3.67 P o (f .42)t.(3.36)el iis= 3.39FT <br />- a = D2S FT/5380FT _ 0.06 <br />FIGURE I - TEMPORARY DIVERSION DITCH A-1 <br />CRF/jb <br />3/11/86 <br />
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