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~ ~~,. ~ <br />Creek Ditch water to the Dry Fork prolongs flow in this ephemeral <br />channel. Flow in Deep Creek Ditch, like that of South Prong and Horse <br />Greek, stuns from higher elevations outside the lease block. Of the <br />entire Iinnesota Creek basin less than 18: is area under which mining <br />and possible subsidence may occur. Less than 9Z of the basin lies <br />upstream of areas under which mining and possible subsidence may <br />occur. <br /> <br />The mean annual discharges for Horse Creek, South Prong, Lick Creek <br />and Dry Fork were estimated on the basis of the measured discharge of <br />each creek for water years (Octoher - September) 1973, 1979 and 1980 <br />and long term records for Caw Creek near Paonia and Smith Fork near <br />Crawford. Each station had missing records. Estimates of the missing <br />records for stations other than Dry Fork were made on the basis of <br />records from nearby stations, weather records for Paonia and typical <br />recession curves. The records for tower Dry Fork reflect the storage <br />in Minnesota Reservoir and diversion into Dry Fork from Deep Creek <br />Ditch. Because of the lack of records at the upstream station and <br />unknown inflows from Deep Creek Ditch, the Dry Fork record could not <br />6e estimated directly. Instead, the mean annual runoff was estimated <br />indirectly on the basis of runoff data from Lick Creek and Sylvester <br />Gulch. <br />The following are the estimated mean annual runoff: <br />Station Runoff (acre feet) <br />Horse Creek 740 <br />South Prong 1180 <br />Lick Creek 315 <br />Dry Fork 1100 <br />The figure for Dry Fork does not include diversion from Deep Creek <br />Ditch. <br /> <br />Stream gaging stations were installed in June of 1971, so a complete <br />record of 1977 water year was noL obtained. Because of low snowfall <br />(3) <br />