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Lake Guernsey State Park developed during the early 1930s on federal land that had been purchased for the North Platte River Project by the Bureau of Reclamation. The reservoir was first filled in 1927 following construction of the Guernsey Dam and Power Plant. The park, located near Guernsey in eastern Wyoming, features a lakeshore drive and a skyline drive, extensive original trails, and an exceptional group of Civilian Conservation Corps era buildings and features constructed of roughly worked local sandstones.