Precipitation
Reservoir
Streamflow
Water users can expect above average yields in the basin this
season. The following forecast values are based on a 50 percent
chance probability for the April to July forecast period. Yields
will range from 130 percent of average for Meeks Cabin Reservoir
inflow (125,000 acre feet) to 167 percent of average (110,000 acre
feet) at Hams Fork near Frontier. Green River near Green River
is forecast to yield 1,300,000 acre feet (145 percent of average).
State Line Reservoir inflow is estimated to flow 42,000 acre feet
(140 percent of average). Viva Naughton Reservoir inflow will be
about 150,000 acre feet (161 percent of average). Flaming Gorge
Reservoir inflow should be near 1,800,000 acre feet (151 percent
of average.
================================================================================================================================== LOWER GREEN RIVER BASIN Streamflow Forecasts - March 1, 1997 ================================================================================================================================== | <<====== Drier ====== Future Conditions ======= Wetter =====>> | | | Forecast Point Forecast | ==================== Chance Of Exceeding * ====================== | Period | 90% 70% | 50% (Most Probable) | 30% 10% | 30-Yr Avg. | (1000AF) (1000AF) | (1000AF) (% AVG.) | (1000AF) (1000AF) | (1000AF) ====================================================================|=======================|===================================== GREEN R nr Green River, WY APR-JUL 1070 1224 | 1300 145 | 1376 1528 899 | | MEEKS CABIN RESERVOIR Inflow APR-JUL 107 118 | 125 130 | 132 143 96 | | STATE LINE RESERVOIR INFLOW APR-JUL 33 38 | 42 140 | 46 52 30 | | HAMS FORK nr Frontier APR-JUL 88 101 | 110 167 | 119 133 66 | | VIVA NAUGHTON RES inflow APR-JUL 120 138 | 150 161 | 162 180 93 | | FLAMING GORGE RES INFLOW APR-JUL 1399 1675 | 1800 151 | 1925 2201 1196 | | ================================================================================================================================== LOWER GREEN RIVER BASIN | LOWER GREEN RIVER BASIN Reservoir Storage (1000 AF) - End of February | Watershed Snowpack Analysis - March 1, 1997 ================================================================================================================================== Usable | *** Usable Storage *** | Number This Year as % of Reservoir Capacity| This Last | Watershed of ================= | Year Year Avg | Data Sites Last Yr Average ========================================================================|========================================================= FONTENELLE 344.8 119.0 121.8 172.0 | HAMS FORK RIVER 4 119 149 | FLAMING GORGE 3749.0 3150.6 3194.4 --- | BLACKS FORK 5 87 127 | VIVA NAUGHTON RES NO REPORT | HENRYS FORK 3 134 132 | | GREEN above Flaming Gorge 26 112 144 | ================================================================================================================================== * 90%, 70%, 30%, and 10% chances of exceeding are the probabilities that the actual flow will exceed the volumes in the table. The average is computed for the 1961-1990 base period. (1) - The values listed under the 10% and 90% Chance of Exceeding are actually 5% and 95% exceedance levels. (2) - The value is natural flow - actual flow may be affected by upstream water management.