 It says the 2024 calendar year runoff forecast for the Missouri River Basin above Sioux City has increased to 24.6 million acre feet, or 96% of average. The 2024 calendar year forecast reflects current improved soil moisture conditions in eastern portions of the basin, current higher-than-normal stream flow, and the Climate Prediction Centers, or CPC, outlook. Observed June runoff above Sioux City, Iowa was approximately 120% of average.