About
San Juan River, Utah Colorado New Mexico — 1826 Fur Trade, 1963 Navajo Dam, 1984 Wild and Scenic 383-mi. Through San Juan County's high desert, the San Juan River cuts 84 miles of Class II canyon water managed by the BLM San Juan River Recreation Area. At 2200 CFS average flow (optimal 1000–4000), the river moves with authority through progressively deeper sandstone gorges. The Sand Island to Mexican Hat section covers 26 miles of introductory canyon paddling, while Mexican Hat to Goosenecks drops through 30 miles of the deepest gorge with Class II–III water and Ancestral Puebloan ruins visible from the river. The final 28 miles from Goosenecks to Clay Hills return to Class II through remote desert canyon country. Wild Rivers Expeditions and Four Corners River Sports run commercial trips through these sections. USGS gauge 09379500 tracks flows that can swing dramatically with upstream releases and weather patterns. Trout Unlimited maintains conservation efforts along select reaches, though this is primarily a warm-water desert river system.
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.