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3. Summary of Reservoir Levels and Contents Runofe during the year ending September 30, 1987 ranged from 83,6 percent of the 74-year (1914-1987) mean at the Green River station at Green River, Utah to 152.7 percent of the 74- year mean at the San Juan River station near San Juan, Utah. The volume of runoff at these stations was 3,735,500 acre-feet and 2,754,600 acre-feet respectively, Runoff of the Colorado River station near Cisco, Utah totaled 6,005,300 acre-feet, which was 88.9 percent of the 74-year mean. Lake Powell's lowest elevation of the 1987 water year occur- red on March 5, 1987 when the lake level was at elevation 3,677.47 feet (live content 21,544,000 acre-feet). Lake Powell was at its highest point on June 25, 1987, at elevation 3,698.47 feet with a content of 24,755,000 acre-feet. A total of 13,603,000 acre-feet was released to the river below Glen Can- yon Dam during the 1987 water year. The 1978-1987 (lO-year) delivery to the Lower Basin (measured at Lee Ferry) was 131,852,000 acre-feet. Lake Mead, on September 30, 1987, contained 24,364,000 acre-feet8 of available storage water at elevation 1,209.79 feet. On September 30, 1987, the live storage of Lake Mead was 1,255,000 acre-feet more than the storage in Lake Powell. Table I on page II shows the Statistical Data for Principal Reservoirs in the Upper Colorado River Basin. Table 2 on page 12 provides the same information for the Lower Colorado River Basin reservoirs. The results of the long-range reservoir operation procedures adopted by the Secretary of the Interior for Lake Powell, Flaming Gorge, Navajo, and Blue Mesa reservoirs in the Upper Colorado River Basin and for Lake Mead in the Lower Basin are illustrated on pages 13-20 for the 1987 water year. There was no equalization of storage as dictated by Section 602(a) of Public Law 90-537. The drawdown of Lake Powell was governed by factors other than the equalization criteria. 7 Adjustcd for thc changc in storagc in Colorado Rivcr Storagc Projcct Rcscrvoirs, HBascd on April I, 1967 Capacity Tablc rcviscd according to Scdimcntation Survcy 1963-1964, 10 j