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Non-Tributary Support: Cash Mine Borehole AdnanBrown <br />Figure 2 - Streamflow in Fourmile Creek, Orodell, CO <br />USGS 06727500 FOURMILE CREEK AT ORODELL, CO. <br />120 <br />100 <br />80 <br />U <br />3 <br />= 60 <br />E <br />d <br />b <br />40 <br />20 <br />0 <br />M IT lf) CD r- co M O - N M v U) <br />00 00 W 00 00 00 00 rn M rn rn rn M <br />Cn rn rn rn M rn rn M rn rn M M rn <br />r r r r r r r .- r r r r r <br />The statistics for the stream are presented below: <br />Table 2 - Flow Statistics - Fourmile Creek at Orodell (1983-1995) <br />Stream <br />Parameter Average Flow <br />cfs Basin Productivity <br />in/ r <br />Total Flow 5.93 3.34 <br />Baseflow 1.38 0.78 <br />Based on the above, the infiltration is computed to be 0.78 inches per year, which comprises <br />approximately 4% of the incident precipitation at the site (19.5 inches per year). Based on this <br />infiltration rate, the radius of influence is: <br />Radius of Influence (R) = v Q/ (2 n q) <br />= ''(2.5 aflyr *43560 cu.tt./at) / (n * 0.78 in/yr /12 in/ft ) <br />= 733 ft <br />., ='?'i.. "-a mss- -::,r :..,,s?:?=v,...a,?sa:.: ?. ?. ?.? : Sdet'`?•?.. s:-._._ _ <br />1601A-20070125 5