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PERMFILE71238
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PERMFILE71238
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Last modified
8/24/2016 11:20:34 PM
Creation date
11/20/2007 11:46:09 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007A
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
Engineering Report
Section_Exhibit Name
Exhibit 52 Water Aug Plan
Media Type
D
Archive
Yes
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l <br />1~ <br />J <br />CONTRIBUTION FACTOkS <br />The average monthly stream flows for Dry Fork and Lick Creek were then <br />J compared to Minnesota Creek average monthly flows to develop monthly <br />"contribution factors" for each creek. These factors are derived by <br />dividing average monthly flows in the tributary stream by average <br />corresponding monthly flows in Minnesota Creek, and are expressed as a <br />percent. These contribution factors will then be used in the calculation of <br />1 stream depletion and augmentation requirements. See Table 2 for the <br />Contribution Factors. <br />kEQUIREU MEASUREh1ENTS <br />Determination of stream depletions, if any, will require that the following <br />measurements be made: <br />J hIM =Minnesota Creek flow at gage <br />_~ Mp =Dry Fork flow at existing ARCO lower gage <br />h1L =Lick Creek flow at existing ARCO oage <br />OSB =Change in storage at Beaver Reservoir <br />] GSM =Change in storage at Monunent Reservoir <br />I = Imported water from Deep Creek Ditch <br />J D = Diversions above Minnesota Creek gage <br />R = Estimated return flow above Minnesota gage <br />EXPECTED FL041 IN MINNESOTA CREEK <br />l The expected flow in Minnesota Creek at the gage (Elq) during retreat <br />J mining operations under Dry Fork will be determined by the following <br />equation: <br />J <br />Ehl = (MM-Mp+~SB+D-R)/(1-Dx) <br />Expected flow (EM) represents the flow that would be measured at the <br />1 Minnesota gage if unaffected by mining activity or other unnatural <br />1 . controls. <br />1' <br />
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