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/- I Dale: January 13, 1999 Fl~CEIVED JAN 1 9 1999 From: Water Resource Group, Salt Lake City Colorado Water Conservation Board To: All Colorado River Annual Operating Plan (AOP) Recipients Current Status December inflow (unreg) (Acre-Feet) Midnight January 12 Elevation Reservoir Storage (Acre-Feet) Percent of normal Fontenelle Flaming Gorge Blue Mesa Powell Navajo 34,000 37,000 23,000 439,000 32,000 103 93 89 103 127 6,487.42 6,030.88 7,488.86 3,681.78 6,064.42 211,000 3,383,000 573,000 21,519,000 1.405,000 Expected Operation FONTENELLE - Releases from Fontenelle Reservoir are currently at 1250 cfs and the reservoir elevation is about 6487 feet. Snowpack above Fontenelle is 86 percent of average. Most probable inflow into Fontenelle Reservoir this coming runoff season is 91 percent of average. Releases will likely remain at or near 1250 cfs through the winter period. This release level, combined with most probable inflow, will result in Fontenelle reaching a minimum pool elevation of 6463.5 feet by about April I, 1999. The reservoir will then be in position to absorb next spring's snowmelt runoff. Fontenelle should be very nearly full in early July 1999. FlAMING GORGE - Releases from Flaming Gorge Reservoir are currently at 2400 cfs. The releases pattern is now "steady" with little or no hour to hour variability. Unless there are shortages in the power market, it is likely that releases from Flaming Gorge will remain steady through the winter period. Inflow to Flaming Gorge Reservoir in the summer and fall was above average. Inflow in July, August, September, October and November was 163. 144, 140, 130. and 129 percent of average, respectively. December inflow, however, was below average. Average unregulated inflow in December is 40,000 acre-feel. December inflow was 36,400 acre-feet: 91 percent of average. December was the first month with below average inflow since April of 1998. In the past two