Precipitation
Reservoir
Streamflow
The remaining of the runoff season (Jun - Sep) should yield
from well below average runoff on the Nowood to well
above on the Wind River. The Wind River below Boysen
is forecast to yield 750,000 acre feet (123 percent of
average); the Nowood River near Ten Sleep should yield
near 14,000 acre feet (67 percent of normal); the Greybull
River near Meeteese should yield 150,000 acre feet (90
percent of average); Shell Creek near Shell should yield
48,000 acre feet (87 percent of average) and the Bighorn
River at Kane should yield 750,000 acre feet (93 percent of
average).
================================================================================================================================== BIGHORN RIVER BASIN Streamflow Forecasts - June 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) JUN-SEP 543 666 | 750 123 | 834 957 609 | | NOWOOD RIVER near Tensleep JUN-SEP 10.0 12.4 | 14.0 67 | 15.6 18.0 21 | | GREYBULL RIVER at Meeteetse JUN-SEP 141 146 | 150 90 | 154 159 167 | | SHELL CREEK near Shell JUN-SEP 39 44 | 48 87 | 52 57 55 | | BIGHORN RIVER at Kane (2) JUN-SEP 376 599 | 750 93 | 901 1124 811 | | ================================================================================================================================== BIGHORN RIVER BASIN | BIGHORN RIVER BASIN Reservoir Storage (1000 AF) - End of May | Watershed Snowpack Analysis - June 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 596.0 420.9 454.2 546.4 | NOWOOD RIVER 2 28 111 | BIGHORN LAKE 1356.0 846.3 824.1 855.6 | GREYBULL RIVER 2 2 6 | | SHELL CREEK 3 64 98 | | BIGHORN (Boysen-Bighorn) 7 46 89 | ================================================================================================================================== * 90%, 70%, 30%, and 10% chances of exceeding are the probabilities that the actual volume 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 volume - actual volume may be affected by upstream water management.