A railroad bridge over the Big Sioux River collapsed Sunday night. (Photo by KSCJ's Woody Gottburg) Residents in Sioux City’s Riverside neighborhood have been advised to prepare to evacuate due to ...

SIOUX FALLS, S.D. (KELO) — The hot weather and lack of rain are taking their toll on water levels all across the region. This includes the Big Sioux River, as levels continue to decrease since the ...

The Big Sioux River, the state's most populated river and the natural boundary that separates southeastern South Dakota from northwestern Iowa, has finally gotten what it so richly deserves: Its own ...

A bridge has collapsed into a river in Iowa after days of rain caused heavy flooding. "It kind of caved in the center, and is currently in the river," Union County ...

SIOUX CITY -- It's been nearly 20 years since the threat of Missouri River flooding has caused serious concern in the Sioux City metro area, but there's reason to worry now. With heavy rains over the ...

NORTH SIOUX CITY, S.D. (AP) — A swollen river that threatened homes where Iowa, Nebraska and South Dakota meet crested earlier and at a lower level than expected early Friday. Minnesota officials ...

The waters of the Big Sioux River are infiltrating the drinking water pulled from wells near Watertown, causing potentially harmful effects that aren’t fully understood yet. Those early conclusions ...

Flooding is being reported along the Missouri River after runoff from multiple days of heavy rain upstream.KCAU, our sister station in Sioux City, shared a drone video showing the flooding at McCook ...

Jenny Kozak, a master's student at South Dakota Mines, pours Big Sioux River water into a collection bottle on Sept. 26 near Egan. The sample will be tested for PFAS compounds. (Makenzie Huber/South ...

Rolling hills and views stretching well off into the distance welcome visitors to the Cheyenne River Reservation, where ...