Guernsey Dam
Encyclopedia
Guernsey Dam is a earthfill dam on the North Platte River
North Platte River
The North Platte River is a major tributary of the Platte River and is approximately long counting its many curves, It travels about distance. Its course lies in the U.S...

 in Platte County in the U.S. State
U.S. state
A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

 of Wyoming
Wyoming
Wyoming is a state in the mountain region of the Western United States. The western two thirds of the state is covered mostly with the mountain ranges and rangelands in the foothills of the Eastern Rocky Mountains, while the eastern third of the state is high elevation prairie known as the High...

. The dam creates Guernsey Reservoir, the last of the 5 major reservoirs on the North Platte River in Wyoming. The dam contains a hydroelectric plant capable of 6.4 megawatts of electricity. The total capacity of the reservoir is 71040 acre.ft of water which is used mainly for irrigation. Guernsey Dam and the hydroelectric plant were constructed as part of the North Platte Project
North Platte Project
The North Platte Project is an irrigation project in the U.S. states of Wyoming and Nebraska. The project provides irrigation service to about . The primary water storage for the project is in Pathfinder Reservoir in Wyoming. Downstream, Guernsey Dam manages river flow and provides secondary...

 to provide irrigation to eastern Wyoming and western Nebraska
Nebraska
Nebraska is a state on the Great Plains of the Midwestern United States. The state's capital is Lincoln and its largest city is Omaha, on the Missouri River....

. Guernsey helps control the river flow and stores water released from the project's primary storage upstream at Pathfinder Reservoir
Pathfinder Reservoir
Pathfinder Reservoir is located in the U.S. state of Wyoming on the North Platte River between Casper and Rawlins. It sits 47 miles southwest of Casper, in Carbon County and Natrona County. The reservoir was created by Pathfinder Dam and has a storage capacity of . The shoreline consists of 117...

. About 8 miles (12.9 km) miles downstream of the dam the Whalen Diversion Dam diverts water into the Fort Laramie and Interstate Canals that service farms in Wyoming and Nebraska.

The reservoir is surrounded by Guernsey State Park
Guernsey State Park
Lake Guernsey State Park, also known as Guernsey State Park Historic District, Lake Guernsey Park, Guernsey Lake Park, or Guernsey State Park, is a historic district and state park near Guernsey, Wyoming...

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