Portneuf River (Idaho)
| Portneuf River | |
|---|---|
The Portneuf River, as seen from U.S. Route 30 west of Lava Hot Springs, October 2004 | |
| Location | |
| Country | United States |
| State | Idaho |
| Counties | Bannock, Caribou, Bingham, & Power |
| Physical characteristics | |
| Source | |
| • location | north of Chesterfield, Bingham County |
| • coordinates | 43°06′10″N 112°00′13″W / 43.10278°N 112.00361°W |
| • elevation | 6,253 ft (1,906 m) |
| Mouth | Snake River |
• location | American Falls Reservoir, Bannock/Power counties |
• coordinates | 42°57′06″N 112°45′02″W / 42.95167°N 112.75056°W |
• elevation | 4,357 ft (1,328 m) |
| Length | 124 mi (200 km) |
| Basin size | 1,329 sq mi (3,440 km2) |
| Discharge | |
| • location | at Tyhee |
| • average | 418 cu ft/s (11.8 m3/s) |
| • minimum | 32 cu ft/s (0.91 m3/s) |
| • maximum | 1,730 cu ft/s (49 m3/s) |
The Portneuf River is a 124-mile-long (200 km) tributary of the Snake River in southeastern Idaho, United States. It drains a ranching and farming valley in the mountains southeast of the Snake River Plain. The city of Pocatello sits along the river near its emergence from the mountains onto the Snake River Plain.
The river is part of the Columbia River Basin.