Jordanelle Reservoir, Recreational reservoir in Wasatch County, United States.

Jordanelle Reservoir is a reservoir on the Provo River in Wasatch County, Utah, just north of Heber City, held back by the earthen Jordanelle Dam. The water surface appears pale blue-grey, bordered by low land and hills, with a small land projection extending from the right shore. A thin wire fence with spaced posts runs across a grassy foreground slope below the water.

Construction of the Jordanelle Dam began on June 27, 1987, and was completed on April 12, 1993, submerging the towns of Keetley, Hailstone and Jordanelle and forcing U.S. Routes 40 and 189 onto the summits of nearby mountains. Conservationists opposed the dam to protect the Provo River, and a large area at its foot became an artificial wetland. Mining interests in Park City feared flooding of the Ontario silver mine, and others cited the 1976 Teton Dam failure. Jordanelle State Park opened on June 29, 1995.

The reservoir takes its name from Jordanelle, one of three towns—with Keetley and Hailstone—submerged when the dam was built. The Provo River feeds and drains it. Anglers come for rainbow trout, kokanee salmon, smallmouth bass, perch, wipers and tiger muskie, a wider range of fish than in other nearby lakes.

Each of the three recreation areas has different facilities and focuses, so checking ahead helps you choose the best spot for your plans. The area is accessible year-round, though summer is the peak season for water activities and camping.

Summer months bring organized triathlon and marathon events that use the surrounding terrain for competitive racing and training. These sporting occasions draw athletes from across the region who take advantage of the varied landscape.