Williams Fork Reservoir, reservoir near Parshall, Grand County, Colorado, United States

Williams Fork Reservoir is a 1,860-acre lake near Parshall in Grand County, Colorado, formed by a concrete dam on the Williams Fork of the Colorado River. Its 15.8-mile shoreline lies at 7,811 feet, with a grassy bank in the foreground and low, rolling hills beyond the water.

Denver Water built the concrete Williams Fork Dam on the Williams Fork of the Colorado River, completing it in 1938 and expanding it in 1959. The dam rises 217 feet (66 m) and measures 600 feet (180 m) along its crest, impounding about 97,000 acre-feet of water. Its power plant houses a 3,158-kilowatt generator.

The reservoir is stocked with fish by Colorado Parks and Wildlife, and anglers also come for ice fishing in winter. Tent, trailer and RV camping and picnic sites sit along the shore, and motor boating and windsurfing share the water. The reservoir takes its name from the Williams Fork of the Colorado River, which it impounds.

Two boat launch ramps provide water access: the east ramp for motorboats and the west for kayaks and small craft. Bring your own food and water since no supplies are sold on-site, and keep pets leashed at all times.

The reservoir's surface covers 1,860 acres (750 ha) and holds about 97,000 acre-feet of water, drawn from the Williams Fork of the Colorado River. Denver Water owns and operates it, and the dam's power plant houses a 3,158-kilowatt generator. The shoreline runs 15.8 miles (25.4 km).