Precipitation
Reservoir
Streamflow
All forecast points are predicted to be average to well above
average. The Wind River below Boysen is forecast to yield
1,190,000 acre feet (147 percent of average); the Nowood River
near Ten Sleep should yield near 78,000 acre feet (135 percent of
normal); the Greybull River near Meeteese should yield 290,000
acre feet (144 percent of average); Shell Creek near Shell should
yield 88,000 acre feet (117 percent of average) and the Bighorn
River at Kane should yield 1,730,000 acre feet (154 percent of
average).
================================================================================================================================== BIGHORN 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 below Boysen (2) APR-SEP 868 1060 | 1190 147 | 1320 1512 809 | | NOWOOD RIVER near Tensleep APR-SEP 47 66 | 78 135 | 90 109 58 | | GREYBULL RIVER at Meeteetse APR-SEP 248 273 | 290 144 | 307 332 201 | | SHELL CREEK near Shell APR-SEP 77 84 | 88 117 | 92 99 75 | | BIGHORN RIVER at Kane (2) APR-SEP 1304 1542 | 1730 154 | 1918 2158 1124 | | ================================================================================================================================== BIGHORN RIVER BASIN | BIGHORN 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 ========================================================================|========================================================= BOYSEN 596.0 524.0 553.9 555.2 | NOWOOD RIVER 5 132 128 | BIGHORN LAKE 1356.0 762.4 821.4 810.4 | GREYBULL RIVER 2 103 149 | | SHELL CREEK 4 114 120 | | BIGHORN (Boysen-Bighorn) 11 118 126 | ================================================================================================================================== * 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.