About
Upper Iowa River, Iowa Minnesota — 1840s-1880s Milling, 2010s Upper Iowa Water Trail, 156-mi Decorah Winneshiek County. From Kendallville through the Driftless Area National Wildlife Refuge, the Upper Iowa cuts 135 miles of limestone bluffs and spring-fed coldwater reaches across Allamakee and Winneshiek counties. At 680 CFS average with an optimal range of 300–2,000, this Iowa Scenic River shifts character significantly along its length. The 25-mile Kendallville to Bluffton section runs through the steepest bluff country, while the 30-mile Bluffton to Decorah stretch holds coldwater trout in spring-fed tributaries. Below Decorah, 15 miles of Class I–II riffles lead to the final 30-mile valley reach before the Mississippi confluence. Hruska Canoe Livery operates on the system, and gauge 05388250 tracks flows through the most popular sections. The river benefits from the Driftless topography — no glacial till means cleaner baseflow and more stable temperatures than most Midwest rivers of comparable size.
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.