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. . . The difference between the amount of flow entering Hanging Lake, below Spouting Rock, and leaving Hanging Lake via East Dead Horse Creek was calculated as a percentage of the amount of flow entering Hanging Lake below Spouting Rock. The difference was the flow "lost" to groundwater or subsurface drainage. This percentage varied throughout the year (Figure 9). The calculations for May also included the water measured in West Dead Horse Creek above the confluence with East Dead Horse Creek. The majority of this water was also lost before it reached Dead Horse Creek. Figure 9: Percentage of flow lost oonftuena> of East and We& [lead ft>rse Qeeks 100 75 1__ % Of.~ losI I j 50 25 o ~.95 2&0:1-95 06FeMlS Date 15-M0y.95 ~ Upper East Dead Horse Creek: Streamflow was not observed in upper East Dead Horse Creek (elevation 10,260 feet) in any of the sllmmer and fall 1995 visits. On June 5, 1996, streamflow was measured at 0.43 cubic feet per second (cfs). On June II, 1996, 0.28 cfs was measured. All of the water is diverted by the Coffee Pot ditch. However, this ditch loses water as it crosses the Dead Horse Creek watershed. Before entering the watershed, flow was measured at 3.51 cfs on June II, 1996. Below the confluence with East Dead Horse Creek, flow was measured ;it 1.22 cfs. Further downstream and out of the watershed, the ditch carried 0.62 cfs. West Dead Horse Creek: In the summer and fall of 1995, West Dead Horse Creek was dry at the confluence with East Dead Horse Creek and also below West Dead Horse Spring in the upper watershed. No further observations were made in West Dead Horse Creek until June, 1996. At the bridge above the confluence with East Dead Horse Creek water flowed for at least 8 days but not more than 34 days during the spring runoff in May, 1996. April 26, 1996-- 0 cfs May 13, 1996-- 5.2 cfs May 16,1996-- 15.2 cfs May 21, 1996-- 9.3 cfs May 30, 1996-- 0 cfs 13