Bureau of Reclamation, Wyoming.
The North Platte Project extends 111 miles along the river valley from near Guernsey, Wyoming to below Bridgeport, Nebraska. Pathfinder Dam and Reservoir are part of this project. Pathfinder Dam is one of the first constructed by the Reclamation Service (now the Bureau of Reclamation). Listed in the National Register of Historic Places, Pathfinder Dam is the primary historic attraction at the reservoir. Construction of the masonry dam between 1905 and 1909 was a major engineering feat. A small interpretive center is located in the historic dam tender's house. The dam is in a granite canyon on the North Platte River about 3 miles below its junction with the Sweetwater River. Parts of the reservoir are included in the Pathfinder National Wildlife Refuge. There are 3 campgrounds and 3 boat ramps. Pathfinder facilities. Available fish species include brown trout, cutthroat trout, rainbow trout, ohrid trout, and walleye. Rainbow and cutthroat trout are stocked annually in the reservoir. The Pathfinder Interpretive Center and 1.7-mile interpretive trail are located near the dam. The interpretive trail may be accessed across the historic suspension bridge or from the dam. Current Reservoir Levels
Effective immediately, Reclamation will require all boats launching at Lake Berryessa to participate in a seal program to prevent the spread of invasive mussels. All vessels wishing to launch at Lake Berryessa will be inspected. A red quarantine seal will be applied for 30 days during, which the vessel will not be permitted to launch. Vessels that have finished the 30-day quarantine may return to the lake and have the seal removed by authorized staff and will be allowed to launch. For more information on this updated protocol, please view the press release here: https://www.usbr.gov/newsroom/news-release/5031.
Site is on the North Platte River 47 miles southwest of Casper, WY, in Carbon and Natrona counties. Access is from U.S. 220 via County roads 408 or 410.