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Navl\io Reservoir The April through July unregulated inflow into Navajo Reservoir in water year 1994 was 769 MCM (0.623 MAF) or 92 percent of average. Water year 1994 unregulated inflow is expected to be 1,086 MCM (0.880 MAF) or 87 percent of average. Navajo Reservoir reached its highest elevation in April 1994. Section 7 consultation with the Fish and &ildlife Slryi&~ for the operation of Navajo Dam was continued in 1994. Water year 199~was the ~year of a seven year study to evaluate alternative operations of Navajo Reservoir to benefit endangered fish, In accordance with this seven year study, spring operations of Navajo were modified in 1994 and large releases of up to 127.4 m3/s (4,500 cfs) were made during much of May and June to coincide with the peak flows of the Animas River to study the effect of large spring flows on the habitat improvement and spawning success of endangered endemic species of fish. This resulted in flows of over 241 m3/s (8,500 cfs) at Bluff, Utah. After the completion of the large spring releases, flows were reduced to approximately 17.0 m3/s (600 cfs) for the remainder of the year. In 1995. Navajo Reservoir is expected to nearly fill except under the probable minimum inflow scenario. Releases from the reservoir wi11 be held near 17.0 m3/s (600 cfs) through the fall and winter months and large releases wi1llikely be made in May and June in order to improve the habitat and provide better spawning conditions for endangered fish in the San Juan River. Lake Powell Iv . During water year 199~releases greater than the minimum release objective of 10,153 MCM (8.230 ;;{AF) will only be made if required to equalize the storage between Lakes Powell and Mead. Under the most probable inflow conditions, the minimum objective release would be made and the reservoir would neither lose nor gain storage. Under the probable maximum inflow scenario. approximately 12,562 MCM (10.183 MAF) will be released during the water year and Lake Powell would gain 4,694 MCM (3.805 MAF) of storage. This maximum probable inflow could require releases of greater than 566.4 m3/s (20,000 cfs) for a period of time. With the net loss of approximately 4.118 MCM (3.338 MAF) of storage from the Colorado River system during water year 1994, it is estimated that it will take five years of average inflow to refill the system storage. The interim flow restrictions on the daily and hourly releases from Glen Canyon Dam implemented in August, 1991 (shown in Table 3) will continue during water year 1995. \~\" However, it is anticipated that a Record of Decision on the GCDEIS will be completed in )\~199V Any changes to the interim flow restrictions contained in the Record of Decision will be implemented as soon as practical. A monitoring program has been implemented and will continue to measure the effect of interim flow restrictions on downstream resources. 10 I I I I I I I I I I I I I t I I I I I