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3. Summary of Reservoir Levels and Contents <br />Runoff' during the year ending September 30, 1998 ranged from 77 <br />percent of the long term (1914-17,1927-98) mean at the San Juan River station near <br />Bluff, Utah to 105 percent of the long term (1914-98) mean at the Colorado River <br />station near Cisco, Utah. The volumes of runoff at these stations were 1,349,367 <br />acre-feet and 5,634,200 acre-feet respectively. Runoff at the Green River station <br />near Green River, Utah totaled 6,016,800 acre-feet, which was 134 percent of the <br />long term (1906-98) mean. <br />Lake Powell's lowest elevation of the 1998 water year occurred on March <br />27, 1998 when the reservoir level was at elevation 3,672.81 feet (live content of <br />20;229,900 acre-feetl. Lake Powell was at its highest point on July 7, 1998 at <br />elevation 3,697.06 feet with a content of 23,852,900 acre-feet. A total of <br />13,4L3,O00 acre-feet was released to the river below Glen Canyon Dam during the <br />1998 water year. The 1989-1998 (10-year) delivery to the Lower Basin (measured <br />at Lee Ferry) was 96,5791,000 acre-feet. <br />Lake Mead, on September 30, 1998, contained 25,126,000 acre-fee's of <br />available storage water at elevation 1,214.78 feet. On September 30, 1998, the live <br />storage of Lake Mead was 2,722,500 acre-feet greater than the storage in Lake <br />Powell. <br />Table 1 on page 1 1 shows the Statistical Data for Principal Reservoirs in the <br />Upper Colorado River Basin. Table 2 on page 12 provides the same information for <br />the Lower Colorado River Basin reservoirs. <br />The results of the long-range reservoir operation procedures adopted by the <br />Secretary of the Interior for Lake Powell, Flaming Gorge, Fontenelle, Navajo, and Blue <br />Mesa reservoirs in the Upper Colorado River Basin and for Lake Mead in the Lower <br />Basin are illustrated on pages 13 through 20 for the 1998 water year. <br />In water year 1998, there was no equalization of storage as dictated by <br />Section 6O2(a) of Public Law 90-537. The drawdown of Lake Powell was governed <br />by factors other than the equalization criteria. <br />' Adjusted for the change in storage in Colorado River Storage Project Reservoirs. <br />e Based on April 1, 1967 Capacity Table revised according to Sedimentation Survey 1963-1964. <br />10 <br />