September offers some of Colorado’s best fly fishing of the year. Cooler water, lighter crowds, fall colors, and hungry trout make it an incredible time to be on the river. Our September Hatch Guide covers Blue Winged Olives, Tricos, caddis, midges, and terrestrials, including the best flies, sizes, and tactics to help you match the hatch and catch more trout this fall.

Cooler nights are improving fishing across Colorado, and our latest fishing report covers everything you need to know before hitting the water. Get current conditions, river-by-river reports, recommended flies, guide tips, and the latest updates for the Colorado River, Eagle River, Roaring Fork River, and Arkansas Tailwater. Plus, learn why September is shaping up to be one of the best months of the year to book a guided fly fishing trip with Colorado River Outfitters.

August fishing is heating up, in the best way. Cooler nights, improving water conditions, and strong insect activity have trout feeding aggressively across many of Colorado’s best rivers. In this month’s Starting Lineup, the CRO guide team shares the three flies you absolutely need in your box, plus one bonus dry fly that’s been producing outstanding early morning action. Whether you’re heading to the Roaring Fork, Colorado or Eagle, these proven patterns will help you fish with confidence.