Lake Nighthorse reopens for 2026, phased access and road work continue

Lake Nighthorse is back on the water, but spring access is still tightly staged. The reservoir opened April 10 for nonmotorized boaters and swimmers, then shifted into a weekend-only schedule, Friday through Sunday from 9 a.m. to 4 p.m., through May 3. Daily operations are set to begin May 8, with motorized boating following on May 15.

That timeline matters for anyone planning a paddle, swim or small-boat outing from Durango. The lake is not in full summer mode yet, and the early-season window still carries seasonal wildlife closures through April 30, 2026. For now, the calendar is doing as much work as the weather: if the trip is built around a weekday launch or a motorized craft, the first usable date is later than the first open date.

The drive in has its own wrinkle. The city said construction is underway to reconstruct 0.8 miles of the paved access road from the entrance station, or ticket booth, to the boat-ramp parking area. The Federal Highway Administration places the lake about 1.7 miles southwest of Durango along La Plata County Road 210, and the city warned that parking could be affected during the work, with carpooling encouraged when possible. For families hauling coolers and swim gear, and paddlers dragging kayaks or SUPs, that is the kind of detail that changes how the day unfolds before the first boat even hits the water.

The access rules remain just as important as the opening dates. The Bureau of Reclamation says recreation is limited to developed areas and to land within 25 feet above the high-water level to protect cultural resources. Off-limits areas are posted with no trespassing signs. That framing is part of what makes Lake Nighthorse feel different from a simple public lake opening: it is a managed space where recreation sits inside a tighter boundary than many visitors expect.

Lake Nighthorse is part of the Animas-La Plata Project, authorized by Congress on September 30, 1968, and the reservoir and surrounding lands cover about 5,500 acres under Reclamation management. Planning documents once estimated nearly 163,197 annual user days, with motorized boating accounting for about 18 percent of that total, or nearly 29,000 use days. Reclamation has also said motorized boats would be allowed from May 15 to November 15 and would be inspected and decontaminated for invasive species. This spring’s phased opening keeps that long-running balance intact: the water is available, but the season comes in layers.