Precipitation
Reservoirs
Streamflow
In the upper portion of the drainage, Wind River near Dubois is
expected to yield about 140,000 acre feet (about 37 percent above
normal) during the April to September period. Other forecast points on
the Wind River drainage include Wind River above Bull Lake 725,000
acre feet (35% above normal), Wind River at Riverton 890,000 acre feet
(37% above average), and below Boysen 1,190,000 acre feet (47 %
above normal). Bull Lake Creek near Lenore is expected to yield about
225,000 acre feet (23% above normal), Little Popo Agie River near
Lander about 69,000 acre feet (33% above normal), South Fork of Little
Wind near Fort Washakie about 105,000 acre feet (30% above normal),
and Little Wind River near Riverton about 450,000 acre feet (39 percent
more than normal). All forecasts are for the April to September period.
================================================================================================================================== WIND 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) ====================================================================|=======================|===================================== WIND RIVER near Dubois APR-SEP 116 130 | 140 137 | 150 164 102 | | WIND RIVER abv Bull Lake Cr (2) APR-SEP 614 680 | 725 135 | 770 836 538 | | WIND RIVER at Riverton (2) APR-SEP 720 821 | 890 137 | 959 1060 648 | | WIND RIVER below Boysen (2) APR-SEP 868 1060 | 1190 147 | 1320 1512 809 | | BULL LAKE CREEK near Lenore (2) APR-SEP 185 209 | 225 123 | 241 265 183 | | LITTLE POPO AGIE RIVER near Lander APR-SEP 51 62 | 69 133 | 76 87 52 | | SF LITTLE WIND RIVER nr Fort Washaki APR-SEP 88 98 | 105 130 | 112 122 81 | | LITTLE WIND RIVER near Riverton APR-SEP 313 395 | 450 139 | 505 587 324 | | ================================================================================================================================== WIND RIVER BASIN | WIND 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 ========================================================================|========================================================= BULL LAKE 151.8 81.1 98.5 85.0 | WIND RIVER above Dubios 7 116 159 | BOYSEN 596.0 524.0 553.9 555.2 | LITTLE WIND 2 108 126 | PILOT BUTTE 31.6 23.5 22.1 17.7 | POPO AGIE 7 109 123 | | WIND above Boysen Resv 15 112 140 | ================================================================================================================================== * 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.