June Missouri River Runoff Much Below Average - The Hamburg Reporter

June Missouri River runoff much below average - The Hamburg Reporter

Press Release June runoff in the Missouri River Basin above Sioux City, Iowa was 3.3 million acre-feet, 60% of average. The updated 2025 calendar year runoff forecast for the Missouri River Basin above Sioux City, Iowa, continues to be below average. “Mountain snowpack melted more rapidly than normal, and all reaches except the Sioux City reach experienced below normal precipitation during June,” said John Remus, chief of the U.S. Army Corps of …

Corps Forecasts Below-Average Runoff For Missouri River Basin

The updated 2025 calendar year runoff forecast for the Upper Missouri River Basin, including Gavins Point Dam near Yankton, continues to be below average.