Boysen Reservoir is located in the Boysen State Park, about 100 miles west of Casper and 20 miles south of Thermopolis in Fremont County in central Wyoming. The reservoir is located towards the south end of the Wind River Canyon, west of the Bighorn River and north of the Wind River. The reservoir is located within the Wind River Indian Reservation as well. The 19,000 acre reservoir provides excellent fishing and water recreation. It also holds the state record for biggest walleye at 17 pounds, 6 and 3/4 ounces. Ice fishing is popular in the winter. Access to the reservoir and the park itself are available on both Highway 20 on the east side of the reservoir and Hwy 26 on the south side of the reservoir.
