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

When forecasters warn about a 100-year or 500-year flood, it doesn’t mean it only happens once every century. A 100-year ...

Peak forecasts will be refined as upstream peaks are observed. Minor to major flooding is occurring along the Thomson River. No recent river level observations are available along the Thomson River at ...