RAGBRAI released the full route map Thursday and will release the ... skip the traditional tire dip in the Missouri River or the Big Sioux River, a tributary, because the starting town, Orange ...

Keeping cattle waste out of the river that runs through the state’s largest city will cost about $11 million over the next ...

The Big Sioux River in Sioux Falls is sitting below average in terms of streamflow for this time of year, according to the ...

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).

People attending Thursday’s Big Sioux Stewardship Summit in Sioux Falls focused attention on the natural beauty of the river.

The city of Sioux Falls is partnering with South Dakota State University for its 13th annual conference on caring for the Big Sioux River.

Two river watchdog groups insist the Big Hole River needs a pollution fix and have called on the state’s environmental agency to make that happen. The Upper Missouri Waterkeeper and the Big Hole ...

The Montana Department of Environmental Quality is asking for photo and video evidence of algal blooms and other data from ...