Rio Grande
About
Four major canyons define 145 miles of Wild & Scenic corridor where the Rio Grande cuts the international boundary through limestone desert. Mariscal, San Vincente with its Hot Springs Canyon, Boquillas, and the Lower Canyons each carve distinct character into the borderland between Texas and Chihuahua. The National Park Service manages the American side of this remote water, which runs Class I-II at an average 635 CFS. Optimal flows fall between 325 and 950 CFS on gauge 08375300, though desert rivers like this one can shift dramatically with upstream releases and seasonal patterns. The canyons themselves provide the primary interest — sheer walls rising hundreds of feet above the water, with side hikes to desert springs and archaeological sites accessible only by river. Multi-day trips are standard here, with camping on both sides of the international line requiring coordination with Mexican authorities in some 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.