Missouri Basin, Pleasant Hill
River Forecast Center
Upper Missouri Basin
September precipitation across the Upper Missouri Basin ranged from below average. Basin precipitation summaries for the Missouri Basin include: Milk St. Mary, 25 percent; Milk Canada, 6 percent; Lower Milk, 24 percent; above Toston, 65 percent; Toston to Ft. Peck, 39 percent.
Of the four major irrigation reservoirs in Montana; Lima Reservoir had 79 percent average storage, Clark Canyon was holding 75 percent of average water, Gibson Reservoir had 53 percent of average stored water, and Fresno Reservoir had 77 percent of average stored water.
Yellowstone Basin
Precipitation during September below average. The upper Yellowstone River Basin received 95 percent of average precipitation while the Lower Yellowstone River Basin reported 53 percent of average. The Bighorn Basin received 80 percent of average precipitation while the Wind River Basin received 82 percent of average. The Little Bighorn - Upper Tongue Basin received 43 percent of average and the Powder River had 56 percent of average precipitation.
Monthend storage at Boysen Reservoir was 80 percent of average. Stored water in Buffalo Bill Reservoir was 79 percent of average. Monthend storage was 90 percent of average at Bighorn Reservoir.
Platte Basin
Precipitation during September in the Upper North Platte Basin was 116 percent of average. In the Lower North Platte Basin, precipitation was 170 percent of average. The North Platte Plains below Guernsy Reservoir had 134 percent. The South Platte Mountains had 125 percent whereas the Plains had 188 percent of average September precipitation.
Stored water in the South Platte Basin was 112 percent of average on October 1.
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Missouri Basin, Pleasant Hill
1803 North 7 Highway
Pleasant Hill, MO 64080-9421
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