WSP10414 - Laserfiche WebLink

Home Browse Search

o Date: February It, 1999 I1~C~/"'~O F"f8 1 G ~.".~ 1999 'lab;'" W~/lIr 80;,; From: Water Resource Group, Salt Lake City To: All Colorado River Annual Operating Plan (AOP) Recipients Current Status January inflow (unreg) (Acre-Feet) Percent of normal Midnight February 10 Elevation Reservoir Storage (Acre-Feet) Fontenelle Flaming Gorge Blue Mesa Powe 11 Navajo 36,000 52,000 . 26,000 432,000 21,000 117 124 106 113 91 6,481.04 6,029.18 7,487.78 3,679.98 6,063.21 173,000 3,317,000 564,000 21,255,000 1,389,000 Expected Operation FONTENELLE - Releases from Fontenelle Reservoir are currently at 1250 cfs and the reservoir elevation is about 6481 feet. Snowpack above Fontenelle is 107 percent of average. Most probable inflow into Fontenelle Reservoir this coming runoff season is 94 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 6464 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 2800 cfs. The releases pattern is now "steady" with little or no hour to hour variability. Releases were increased from 2400 cfs to 2800 cfs on January 27. Inflow has been above average during the first part of water year 1999. The reservoir level is currently about 1.5 feet higher than expected. Additionally, snow conditions in the Upper Green River basin have changed significantly in the past month and a half. Snowpack on December 20, 1998 in the Upper Green River basin wa<; only 60 percent of average. As of February 8, 1999, snowpack in the Upper Green has increased to 106 percent of average.