About
Des Moines River, Iowa — 1843-1851 Fort Des Moines, 1977 Saylorville Dam Closed, 2010s Sustainable Rivers 525-mi. From prairie headwaters in Humboldt County to its confluence with the Mississippi at Keokuk, the Des Moines River flows 525 miles through Iowa at an average of 5,400 CFS. The upper 70 miles from Humboldt to Fort Dodge run through agricultural prairie, while the Boone area near Ledges State Park cuts through distinctive sandstone canyons. Below that, the Des Moines metro section operates as an urban water trail with dam bypasses, part of the Des Moines Water Trails system established in 2016. The lower reach from Ottumwa to Keokuk widens into a broad valley approaching the Mississippi. At Class I throughout with optimal flows between 1,000 and 8,000 CFS, this is big water paddling suited to longer expeditions. USGS gauge 05481650 tracks conditions, and Des Moines Water Trails Outfitters provides gear and shuttle services for the designated Iowa Water Trail sections.
River conditions are community-verified. CFS ranges, difficulty ratings, and access points may not reflect every flow level or seasonal change. Always check current conditions, scout unfamiliar rapids, and paddle within your skill level.