Low, clear Colorado rivers set up a fall tailwater and streamer game

What's biting

What's next

Expect more of the same over the next few days. With a new moon and cool nights, water temperatures should hold steady or slip lower, and the 59 to 61°F readings leave plenty of margin. Fish should stay active through the middle of the day rather than only at dawn.

Plan around the warmest part of the afternoon for hatch activity. Crystal Fly Shop (CO) reports overlapping hatches, so expect rising fish to be selective and watch closely before choosing a pattern. Stealth matters more than fly choice, so approach slowly and keep a low profile on the banks.

For subsurface fishing, AvidMax Blog (CO) is tying small midge emergers and tube midges aimed at clear, cold conditions, which suits this stage. Where flows are higher and stained, Crystal Fly Shop (CO) says the streamer bite on the Colorado near Glenwood Springs should be pretty decent. A muddy river after monsoon rain can reduce visibility, so check clarity before committing to a stretch.

Context

Fall in Colorado typically brings cooling water, tailwater midge and baetis hatches, and a shift toward streamers as fish feed up before winter. This year starts from an unusual baseline. Pat Dorsey Fly Fishing calls the 2026 drought the worst on record, and Colorado Trout Hunters note a second-worst snowpack and a hot summer. Tailwaters have held up best, per both sources.

The cooler fall temperatures are a relief after months of warm, low water. The usual advice still applies this season: carry a thermometer, keep fish wet, and check for any voluntary closures before heading out. Check state regs before harvesting.