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The values are: Salinity in WJJi1 Below Hoover Dam .............................723 Below Parker Dam ...............................747 Imperial Dam...................................... 879 The Forum is continuing to study salinity conditions and to develop new salinity projections. The Forum is also developing flow versus salt load relationships that will reflect present and anticipated conditions. Salinities at each of the three lower mainstem stations for which numeric criteria have been established have decreased since 1972, 2. FORECAST OF STREAM FLOW The April1, 1990 forecast ofinflow to Lake Powell by the National Weather Service, Department of Commerce, for April- July was estimated to be 3,600,000 acre-feet,! The unregulated inflow to Lake Powell for the period April- July 1990 amounted to 3,211,000 acre-feet2, which was about 41 percent of the 28-year (1963-1990) average flow, During the April- July 1990 period, changes in storage in Colorado River Storage Project reservoirs including Lake Powell resulted in an overall increase of 182,000 acre-feet, with 258,000 acre-feet of evaporation and a 5,000 acre-foot decrease in bank storage.3 Actual regulated inflow to Lake Powell for the period April- July 1990 was 3,210,000 acre-feet. For the period October 1, 1989 through September 30, 1990, the change in reservoir storage, excluding bank storage and evaporation, at selected reservoirs above Lake Powell was: Fontenelle decreased 6,500 acre-feet; Flaming Gorge increased 121,700 acre-feet; Taylor Park de- creased 4,800 acre-feet; Blue Mesa increased 33,700 acre-feet; Morrow Point increased 700 acre-feet; Crystal increased 400 acre-feet; and Na- vajo increased 51,000 acre-feet. 1 Including water to be stored upstream in other Colorado River Storage Project Reservoirs. 2 Adjusted for upstream regulation and depletions. · Includes Flaming Gorge Reservoir on the Green River. 9