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<br />was 1,171 ft3/s on June 30, 1999. <br /> <br />li <br />I" <br /> <br />Precipitation was above average for July at 190 percent. Natural inflow was average for July at <br />102 percent. The total April-July runoff was 206,338 acre-feet, which was 104 percent of <br />average. Total release to the Colorado River for July was equal to the bypass release for <br />minimum required fish habitat plus a spill of 13,994 acre-feet that ended on July 10. The Lake <br />Granby spill totaled 48,400 acre-feet for water year 1999, which was the seventh highest spill <br />volume since records began in 1962. <br /> <br />For August, diversions through Adams Tunnel were below average at 9,989 acre-feet, which was <br />51 percent of average. August precipitation was only 141 percent of average, while the natural <br />inflow was estimated at 148 percent of average. <br /> <br />September had natural inflow at 105 percent of average and precipitation was 58 percent of <br />average. The Adams Tunnel diversions totaled 962 acre-feet for the month, which was only 6 <br />percent of average. The low diversions were caused by facility outages. During the last half of <br />September, the concrete lining replacement maintenance was conducted on the Charles Hansen <br />Feeder Canal. <br /> <br />No water was pumped into Lake Granby via Windy Gap Pumping Plant for the 1999 water year. <br />Lake Granby ended the water year with 521,973 acre-feet in storage. This storage was 108,293 <br />acre-feet above the 30-year average, and 26,440 acre-feet higher than 1 year ago. <br /> <br />Adams Tunnel diversions totaled 165,600 acre-feet for the water year. This total diversion was <br />62,900 acre-feet below the 30-year average. <br /> <br />Lake Estes <br /> <br />Completed in 1949, Lake Estes (on the Big Thompson River) provides regulating capacity for <br />power purposes. The lake has a total capacity of 3,100 acre-feet and controls the discharge of <br />Estes Power Plant, river inflow, river outflow, and releases of water to the Foothills Power <br />System via Olympus Tunnel (550 ft3fs capacity). The Estes Power Plant contains three units <br />with a total installed capacity of 45 megawatts, with combined release capability of 1,300 fefs. <br />The spillway, located on the right abutment, has five radial gates with a total release capability of <br />21,200 ft3 fs. The center gate has been automated and is controllable from the Loveland Control <br />Center. <br /> <br />During the winter, project water is diverted through Adams and Olympus Tunnels and routed <br />through the Foothills Power System on its journey to terminal storage in Carter Lake and <br />Horsetooth Reservoir. <br /> <br />The October-January precipitation for the Big Thompson River Basin above Lake Estes was wet <br />at 121 percent of average, with January precipitation 200 percent of average. The inflow into <br />Estes Park for this period was above average at 127 percent. The February 1 snow-pack water <br /> <br />13 <br />