Lower Than Normal Runoff Expected For Missouri River Basin
January runoff in the Missouri River Basin above Sioux City, Iowa, was 1.0 million acre-feet, which is 132 percent of average. Runoff was above average for all of the reaches in the upper Missouri River Basin, even though most of the upper Basin had below-normal precipitation. This was due to above average temperatures causing early snowmelt.
The updated 2026 calendar year runoff forecast for





