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releases for the 15 Mile Reach from Ruedi Reservoir, Fryingpan- Arkansas Project, and from Wolford Mountain Reservoir, owned by the Colorado Water Conservation District. Due to favorable water availability in the basin during 1999, releases of surplus HUP water were also coordinated with the releases of the 15 Mile Reach from Granby and Willow Creek reservoirs (jointly managed with the Northern Colorado Water Conservation District), and from Dillon and William Fork reservoirs (owned and managed by Denver Water). Beginning on September 1 and ending on November 3, the Managing Entities held weekly conference call meetings to assess the availability of surplus water in the HUP and to make releases to the Grand Valley Power Plant. A total of 35,566 acre-feet of surplus HUP water were released in support of the effort during 1999. Releases of surplus HUP water were discontinued after November 2. The recorded flow at the Dotsero gage was 1,531,328 acre-feet for water year 1999, which was 103 percent of average. The August and September inflows were 144 percent of average and 128 percent of average, respectively. August was very wet at 147 percent of average precipitation. September precipitation decreased to 86 percent of average. By the end of the water year, turbine releases were at 600 ft3/s and reservoir storage was 129,331 acre-feet, which was only 4,490 acre-feet above average. The total 1999 water year undepleted inflow of 434,500 acre-feet was 60,480 acre-feet above the 1966-1995 average inflow of 374,020 acre-feet. Blue River, Dillon Reservoir, and Green Mountain Reservoir operations for water year 1999 are summarized in table 2. Gross generation at the Green Mountain Power Plant totaled 69,900,000 kilowatt-hours for water year 1999. This was much above average at 124 percent, due to the high runoff year. Willow Creek Reservoir Completed in 1953, Willow Creek Reservoir has a total storage capacity of 10,600 acre-feet. The uncontrolled spillway, located at the left abutment, has a capacity of 3,200 ft3fs. The Willow Creek Feeder Canal begins at the left abutment with a capacity of 400 ft3/s for pumping to Granby Reservoir. Reservoir carryover storage coming into water year 1999 was 9,400 acre-feet. This carryover storage was 540 acre-feet above the 30-year average. October-J anuary inflows were near average at 125 percent of average. Precipitation for the same period was well above average at 132 percent of average. The February 1 snow-water content was 105 percent of average, which resulted in an April-July runoff forecast of 52,000 acre-feet. 10