Gore Canyon and Pumphouse: pick the river stretch that fits you

Just southwest of Kremmling, the Colorado River drops into Gore Canyon, a roughly three-mile slot with walls about 1,000 feet high. American Whitewater rates the run Class IV-V, and Visit Grand County calls its rapids “among the most challenging in the state.” This is steep, continuous water with named drops like Gore Rapid and Tunnel Falls. It’s the kind of canyon serious paddlers travel for, and the county is blunt about it: not a route for inexperienced boaters. A handful of licensed Kremmling-area outfitters will put an expert in your boat if you want to see it.

Here’s the part people miss. The same river calms down right below. Gore Canyon ends at Pumphouse, the BLM recreation area that’s the most-used Colorado River access point between Kremmling and State Bridge. From there, the water runs anywhere from flat to Class III—floatable on a warm afternoon. Pumphouse also has a man-made wave above Boat Ramp #2 that kayakers and stand-up paddleboarders use as a play park, plus campsites and boat ramps (reserve through Recreation.gov).

So one canyon offers two trips: a guided test piece for strong paddlers, and a gentler day downstream for the rest of us. Check current conditions and book on BLM’s Pumphouse Recreation Area page.