City, Partners to Host 11th Annual Big Sioux River Cleanup
Published on April 15, 2026
he City of Sioux Falls, in partnership with Friends of the Big Sioux River, will host the 11th annual Big Sioux River Greenway Cleanup on Saturday, April 25, from 10 a.m. to noon. The event is the city’s largest coordinated litter-removal effort, bringing together community volunteers each year to help protect and clean up the Big Sioux River.