Fly fishing for Rio Grande cutthroat trout in Great Sand Dunes National Park offers a unique and rewarding experience set against one of Colorado’s most striking natural backdrops. The park’s diverse waterways, including Sand Creek and the Medano Creek, support populations of this native trout, known for its distinctive red slash marks beneath the jaw.

Anglers

Fly fishing for Rio Grande cutthroat trout in Great Sand Dunes National Park offers a unique and rewarding experience set against one of Colorado’s most striking natural backdrops. The park’s diverse waterways, including Sand Creek and the Medano Creek, support populations of this native trout, known for its distinctive red slash marks beneath the jaw.

Anglers should focus on fishing early morning or late evening when the fish are most active. Since Rio Grande cutthroat trout tend to inhabit cooler, clear mountain streams, targeting riffles and deep pools with natural cover such as undercut banks or submerged logs will increase your chances of a catch.

Use small to medium-sized dry flies, nymphs, or even streamers that imitate local insects and aquatic life. Popular patterns include Adams, Elk Hair Caddis, and Pheasant Tail nymphs. Light tackle—typically 4- or 5-weight fly rods—is ideal for these trout, which usually range from 8 to 14 inches.

Practice catch-and-release whenever possible, as Rio Grande cutthroat trout are a sensitive species with conservation efforts aimed at preserving their populations. Remember to check park regulations for any specific fishing restrictions, seasonal closures, and required permits before heading out.

Fishing in this remote landscape not only promises great angling but also a chance to connect deeply with the natural environment amid the striking sand dunes and surrounding Sangre de Cristo Mountains.