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PERMFILE61158
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PERMFILE61158
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Entry Properties
Last modified
8/24/2016 11:07:49 PM
Creation date
11/20/2007 7:03:30 PM
Metadata
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Template:
DRMS Permit Index
Permit No
C1981016
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
Hydrology calculations
Section_Exhibit Name
APPENDIX XXI Section XXI.9
Media Type
D
Archive
No
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• WEST MINE NORRIS POND <br />For the purpose of this calculation it is presumed that the 25 yr. <br />24 hr. flow will not over top the road, therefore, the peak flow will <br />only result from the sediment area of the Norris Pond. <br />A = 5.28 acres <br />640 acres/sq.mi. _ .0083 <br />16.7 qp = 484 AQ <br />D + L qp = peak runoff <br />2 Q = rainfall in inches <br />= 484 (.0083)(.95) A = Area in sq. miles <br />6 + .057 d D = duration of rain <br />2 L = Lag time in hours <br />= 1.25 second feet <br /> <br />• <br />
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