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<br />d. Pathfinder Reservoir. Pathfinder Reservoir's storage <br />capacity is 1,015,888 acre-feet. On 1 January 1913, the reservoir <br />contained 831,986 acre-feet. This was 28,000 acre-feet less than <br />on the same date in 1972. Pathfinder Reservoir inflow consists <br />of Seminoe Reservoir outflow plus runoff from the incremental area <br />between the dams. The Sweet_ter River is the single largest <br />contributor. Heavy inflow from that stream in May caused <br />Pathfinder storage to climb rapidly. Outflow capacity is slightly <br />over 4,000 c.f.s.; in order to increase the release rate at <br />Pathfinder Reservoir, the Bureau of Reclamation increased the <br />Seminoe Reservoir release rate and increased the pool level at <br />Pathfinder Reservoir into the surcharge zone. This permitted <br />spill_y releases in addition to releases from the service <br />outlets. The maximum daily outflow was 7,191 cubic feet per <br />second on 8 June 1973. The maximum storage level of 1,056,011 <br />acre-feet was reached on 6 June 1973. This was 40,189 acre- <br />feet into the surcharge Zone above the ungated spillway crest. <br /> <br />18 . SNOW COURSES - ALCOVA TO GLENllO <br /> <br />The incremental drainage area between Alcova Dam and <br />Glendo Dam had the heaviest snowpack of record in 19'73. The <br />Soil Conservation Service snow-course data indicated that the <br />heavy increase in snowpack occurred primarily in April. Table <br />13 provides the snow course measurement data for the four regular <br />snow courses in the reach. <br /> <br />32 <br />