Lower Gunnison River in the Gunnison Gorge Professional Review and Guide
"This 26-mile section of river begins below three impoundments, Crystal, Morrow Point, and Blue Mesa Reservoirs, and travels through the Black Canyon of the Gunnison National Park and the Gunnison Gorge before joining the North Fork of the Gunnison at Pleasure Park.
Brown trout up to 20 inches are common, but brown trout in the 14-to 18-inch range predominate in the inner gorge. Some decent rainbows can be found in the Forks area, which is the confluence with the North Fork and is regu-larly stocked. Due to whirling disease, the monster rainbows of decades past are gone from the canyons. The good news is that brown trout have filled the niche with increased numbers. And while brown trout can be notoriously finicky, the lower Gunnison is extremely prolific in terms of aquatic insect production, with some subspecies of stoneflies, caddis, and mayflies present year-round. In the off-season, these would primarily be in the subsurface forms."