| Pathfinder Dam | |
|---|---|
 Pathfinder Dam | |
| Location | Natrona County, Wyoming, USA |
| Coordinates | 42°28′05″N 106°51′14″W / 42.46806°N 106.85389°W |
| Construction began | 1905 |
| Opening date | 1909 |
| Operator(s) | U.S. Bureau of Reclamation |
| Dam and spillways | |
| Type of dam | Cyclopean masonry gravity arch |
| Impounds | North Platte River |
| Height | 214 feet (65 m) |
| Length | 432 feet (132 m) |
| Width (crest) | 10.5 feet (3.2 m) |
| Width (base) | 96.5 feet (29.4 m) |
| Dam volume | 65,700 cu yd (50,200 m3) |
| Spillway type | Uncontrolled natural channel |
| Spillway capacity | 33,940 cu ft/s (961 m3/s) |
| Reservoir | |
| Creates | Pathfinder Reservoir |
| Total capacity | 1,016,500 acre-feet (1.2538 km3) |
| Catchment area | 14,600 sq mi (38,000 km2) |
| Power Station | |
| Hydraulic head | 300 ft (91 m) |
| Turbines | 2 x 33.4 MW Francis-type at Fremont Canyon Powerplant |
| Installed capacity | 66.8 MW |
| Annual generation | 172,606,300 KWh (2007) |
Pathfinder Dam | |
| NRHP reference No. | 71000888[1] |
| Added to NRHP | August 12, 1971 |
Pathfinder Dam is a masonry dam, located on the North Platte River, approximately 47 miles (76 km) southwest of Casper, Wyoming. It was constructed from 1905 to 1909 as part of the North Platte Project and has been modified several times since then. It is included on the National Register of Historic Places. Construction of the dam created Pathfinder Reservoir which provides water storage for 226,000 acres (910 km2) of irrigation in Wyoming and Nebraska.[2] The dam is named for General John Charles Fremont, who had explored the area in 1842 and was nicknamed the "Pathfinder of the West."
- ^ "National Register Information System". National Register of Historic Places. National Park Service. March 13, 2009.
- ^ "North Platte Project". U.S. Bureau of Reclamation. Retrieved 17 May 2011.