Guernsey State Park

Quick Facts

Guernsey State Park


(307) 836-2334

Map Directions

Things To Do


This park provides the finest examples of Civilian Conservation Corps (CCC) work in the Rocky Mountain area. Built by the CCC, the Guernsey Museum, the Castle and Brimmer Point are available to explore. The museum is perched on a high cliff, overlooking the water. The building itself is made of hand hewn timbers and hand forged iron. The roof is framed with the timbers and covered with split cedar shakes, and the floors were formed by pieces of smooth flagstone. The Castle, with its giant fireplace and winding steps, leads to an observation area for a spectacular view of the park. An extensive network of trails was originally planned and partially built during the operation of the CCC camps. Ever since that time hiking and trail use has been a major feature at Guernsey State Park. Approximately ten miles of CCC trails have been restored on the park. Starting point for the trail system is at the Brimmer Point turnoff. The trail system consists of several loops which provide a variety of scenic views of the park, reservoir and the dam. Most of the trails are moderately physically demanding. The Oregon Trail was one of the primary routes used by the immigrants' westward migration across the plains from 1841 to 1869. Today, in many parts of Wyoming, remnants of The Oregon Trail can still be seen. Some of the best examples are the "ruts"; located just 1/2 mile south of the town of Guernsey, off Highway 26. Register Cliff located two miles southeast of Guernsey provided travelers with a "chalkboard" where they placed their names for those who followed. The landmark still remains much the way it looked to pioneers on wagon trains journeying West.

Map of Guernsey (WY)

Latitude, Longitude: 42.316454, -104.811650



  • Camping

    Guernsey State Park provides seven campgrounds. Five are around the lake. All campgrounds include comfort stations, picnic tables, fire grills and drinking water. There is also a trailer dump station located at the south entrance to Guernsey State Park.

  • Fishing

    Fishing is permitted, according to Wyoming regulations.

  • Hiking

    There are ten miles of trails that have been restored. Enjoy scenic views. Trails begin at Brimmer Point turnoff.

  • Historic Sites

    The Guernsey Museum, the Castle and Brimmer Point are available to explore for historical touring.

  • Picnicking

    There are many picnic areas in the park.

  • Water Sports

    There is a beach area for water sports.


Most park grounds are open year round, weather permitting; restrooms and drinking water systems and museum are closed Oct. 1 - Apr 30. Park grounds are open 24-hours.



Located off Interstate 25, Exit 92 to U.S. Highway 26 and then State Route 270.

Phone Numbers


(307) 836-2334