Glendo State Park is located in one of the most historic areas in the state. The reservoir inundates several miles of historic trails. Two or more branches of the Oregon-Utah- California Trail passed where the water now lies. Some of the state’s early farming and ranching was conducted in this area.
The Spanish Diggings, a large area of aboriginal activity, lies just a few miles east of the reservoir. Also rising out of the reservoir’s east side at Sandy Beach are a series of sand dunes that reach from the Great Divide Basin and the Green River, east to the sand hills of Nebraska. The Arapahoe and Cheyenne Indians arrived in southeastern Wyoming and the North Platte River Basin in the 18th century. The Oglalla and Brule Sioux arrived in the 1830s, moving into eastern Wyoming from South Dakota. Tipi rings and a variety of cultural artifacts are still uncovered in Glendo State Park and the surrounding area (remember, it is unlawful to remove any artifacts you find).
Glendo dam was begun in 1954. The dam was completed in 1957 and the power plant in 1958. The dam is an earth fill structure 2,096 feet long and 167 feet high.
Courtesy of Wyoming State Parks and Historic Sites
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