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Releases from Flaming Gorge have been at or near minimum levels since the spring of 1988 due to drought conditions in the Green River Basin. Inflow into the reservoir during the April- July runoff period was 597,000 acre-feet, or approximately 47 percent of normal, leaving the reservoir approximately 17 feet short of filling. Releases from the reser- voir were constrained to a maximum of 2,600 cubic feet per second (cfs) from mid-July through October to provide interim protection for the endangered Colorado squawfish. Due to the initiation oftest flows at Glen Canyon Dam, releases from Flaming Gorge were increased above minimum levels during the latter part of the water year in order to give the Western Area Power Admini- stration more flexibility in keeping the power system whole in the event of an emergency. This was done with the understanding that Flaming Gorge would only be used as a last resort (i.e., power from other sources could not be purchased). Even with this increase, releases average only 1,000 cfs for the water year. Even with the continuation of the test flows in 1991 and the expected inflow in 1991 being only 75 percent of normal, Flaming Gorge is expected to be within 10 feet of filling in 1991. c. Fontenelle Reservoir The water surface ofFontenelle Reservoir was at its highest elevation of the year July 30-31,1990, with usable surface storage of335,000 acre- feet. The year 1990 was the first full year of normal operations at Fontenelle Dam since the modification work on the dam was completed. Inflow into Fontenelle during the April-July runoff period was 524,000 acre-feet, or approximately 60 percent of normal. With this low runoff, only 38,000 acre-feet of water were bypassed during the water year. During water year 1991, Fontenelle Reservoir will be drawn down to minimum power pool. Under all but the most adverse conditions, the reservoir should fill again in 1991. d. Navajo Reservoir Navajo Reservoir reached its maximum content ofl,379,00 acre-feet at elevation 6,062.74 on July 17, 1990. The end-of-year content was 1,361,000 acre-feet. About 147,000 acre-feet were delivered to the Navajo Indian Irrigation Project. Releases from the reservoir were at or near minimum levels throughout the 1990 water year. The observed inflow into Navajo Reservoir for the April- July runoff period was 424,000 acre- 59