Dolores River Below McPhee Runs Off-Color at 37 CFS This Spring

The gate above McPhee Dam is still locked for the season. That single operational detail, recorded in a Duranglers field report on March 25, reframes every trip plan on the lower Dolores this weekend: reaching the dam tailwater requires three miles on foot each way before an angler ever touches the river.

Duranglers, the Durango fly shop and guide service that has worked Southwest Colorado drainages for decades, logged a streamflow of 37.0 cubic feet per second at a gauge height of 3.88 feet, with water temperatures at 44.6°F. Spring flows on the Dolores below McPhee typically run between 50 and 5,000 CFS depending on snowpack and reservoir management, meaning last week's reported 37 CFS sat below the usual low-end baseline even after managers "bumped up" releases below the dam in the days preceding the report. At that volume, floating is off the table; this is wading water.

Off-color visibility changes the tactical math. Duranglers recommended dark or flashy streamers as the primary approach for current conditions. Once the turbidity settles, the late-March fly selection shifts toward the technical end: Parachute Adams and Griffith Gnat dries in sizes 18 through 24, Pheasant Tail nymphs and micro may patterns running 16 through 24.

A few regulations apply specifically to this stretch and catch a surprising number of anglers every spring. The first 12 miles below McPhee Dam, running all the way to Bradfield Bridge, are designated catch-and-release water with artificial flies and lures only; every trout hooked in that corridor must go back immediately. A valid Colorado fishing license is required: resident annual licenses for the 2026-2027 season run $44.87, nonresidents pay $124.01, and licenses are valid through March 31, 2027. Colorado Parks and Wildlife's clean-drain-dry rule for all gear and watercraft applies statewide, carrying extra urgency following zebra mussel detections in the Colorado River system in 2024 and 2025.

The bumped-up releases from McPhee, which the Bureau of Reclamation controls, carry economic weight beyond the fishing itself. Guide booking windows in the Dove Creek and Slick Rock area track closely with reservoir output; outfitters confirming reservations this week should verify gate status and access conditions before client arrivals, since the closed dam road adds both distance and risk management complexity to any guided day. Dolores County search-and-rescue units have historically seen spring incident rates rise when remote river access opens, and an unmaintained three-mile approach route only concentrates that exposure.

Duranglers' own Spring Fly Fishing Festival runs April 2 through 4 in Durango, where current conditions on the Dolores and other drainages will be part of the programming, offering a timely venue for outfitters and anglers tracking how fast the river is changing.