About
Cache la Poudre River, Colorado — 1864 Fort Collins, 1986 Wild and Scenic, 1976 Big Thompson. Colorado's only National Wild & Scenic River designation protects 76 miles of the Cache la Poudre through Larimer County and Roosevelt National Forest. Flowing at 480 CFS average with an optimal range of 200–1200, the Poudre offers Class II–IV water split between technical upper canyon runs and the lower canyon sections. The upper canyon holds Class IV drops that demand precise boat handling, while downstream sections moderate to more forgiving gradients. French fur trappers gave the river its name — "hide the powder" — referencing cached gunpowder stores along its banks. The Arapaho knew these waters long before European contact, and their territory extended through much of the drainage. Wild & Scenic designation came in 1986, the same year a historic 500-year flood event reshaped much of the canyon in September. A-1 Wildwater runs commercial trips on sections of the river. USGS gauge 06752260 tracks flows for paddlers timing their runs to spring snowmelt or controlled releases.
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.