The Big Sioux River in Sioux Falls is sitting below average in terms of streamflow for this time of year, according to the United States Geological Survey (USGS).

A Minnesota dam partially failed, an Iowa levee breached, interstates shut down and multiple rivers were awash over their banks Tuesday after a swath of the nation's northern tier was blasted with ...

“The Big Sioux River is one of our biggest assets and it ... Troy Larson, Executive Director of the Lewis and Clark Regional Water System, will be speaking at the summit about the future ...

OMAHA — Runoff into the upper Missouri River basin continues to be below average, and the forecast for runoff in 2025 continues to drop as well. Runoff into the Missouri River above Sioux City was 2.3 ...