tailwater · Rainbow Trout, Brown Trout, Cutthroat Trout
The South Platte River system is Colorado's most celebrated trout fishery, with several Gold Medal sections that produce exceptional numbers of large, well-conditioned trout in dramatic Front Range canyon settings. The most famous stretch is Cheesman Canyon, a rugged, hike-in section between Cheesman Dam and the town of Deckers where crystal-clear tailwater flows support a remarkable density of rainbow and brown trout in the 14- to 22-inch range. The canyon's restricted access and catch-and-release regulations have created a population of heavily educated fish that demand the finest leaders, smallest flies, and most careful presentations a trout angler can muster.
Below Deckers, the river flows through a broader canyon with easier access and somewhat less technical fishing, though the trout remain large and plentiful. The Eleven Mile Canyon section above Spinney Mountain Reservoir offers a different experience entirely, with freestone characteristics and a mix of browns, rainbows, and the occasional cutthroat trout in a setting that feels more like a mountain stream than a Front Range tailwater. What makes the South Platte exceptional is its proximity to Denver and Colorado Springs, providing world-class trout fishing within an hour of the state's major population centers. The river's midge hatches are legendary, with winter dry fly fishing on tiny Griffith's Gnats and RS2 patterns that would seem absurd on any other river but produce consistent action on the South Platte even in January. For anglers willing to embrace technical challenges and fine tippets, the South Platte rewards with some of the most satisfying dry fly fishing in the American West.
Check Colorado Parks and Wildlife for current regulations. Cheesman Canyon is catch-and-release only with artificial flies and lures only. Gold Medal water regulations apply on designated sections.
Hike-in access to the famed Cheesman Canyon. Steep trail drops into the canyon. Technical dry fly water with large, selective trout.
Easy roadside access to productive riffles and runs below Cheesman Canyon. Good all-around fishing with both nymphing and dry fly opportunities.
Upper South Platte access in a scenic canyon setting. Mixed freestone and tailwater character with excellent camping nearby.
| Month | Insect | Size | Pattern |
|---|---|---|---|
| March | Midges | #20-26 | Griffith's Gnat, RS2, Mercury Midge |
| Blue-winged Olive | #18-22 | Parachute BWO, Sparkle Dun | |
| June | Pale Morning Dun | #16-20 | PMD Sparkle Dun, PMD Cripple |
| Caddis | #14-18 | Elk Hair Caddis, CDC Caddis | |
| September | Trico | #20-24 | Trico Spinner, CDC Trico |
| Blue-winged Olive | #18-22 | Parachute BWO, RS2 |