Cochrane is a private hydroelectric facility located on the Missouri River in Fort Benton, Montana.
Wind
Humidity
Built in 1957 by the Bechtel Corporation, this gravity dam stands at a height of 100 feet and has a structural height of 105 feet. With a normal storage capacity of 8,464 acre-feet and a maximum discharge of 140,000 cubic feet per second, Cochrane plays a crucial role in regulating water flow and generating hydroelectric power in the region.
Managed by the Federal Energy Regulatory Commission, Cochrane has a high hazard potential and is classified as a very high risk facility. With a spillway width of 280 feet and controlled spillway type, the dam is equipped with one other controlled outlet gate and seven Tainter (radial) gates. Despite its age, the condition assessment of Cochrane is not available, highlighting the need for regular inspections and maintenance to ensure the safety and efficiency of the structure.
As a key component of the water resource infrastructure in Montana, Cochrane serves as a reminder of the importance of proper management and maintenance of dams for both water supply and energy generation. With its strategic location on the Missouri River and significant storage capacity, Cochrane contributes to the overall water management efforts in the region, highlighting the interconnectedness of water resources and climate resilience.
Year Completed |
1957 |
Dam Length |
856 |
Dam Height |
100 |
River Or Stream |
Missouri River |
Primary Dam Type |
Gravity |
Surface Area |
249 |
Hydraulic Height |
100 |
Drainage Area |
23270 |
Nid Storage |
8464 |
Structural Height |
105 |
Outlet Gates |
Other Controlled - 1, Tainter (radial) - 7 |
Hazard Potential |
High |
Nid Height |
105 |
Missouri River Near Great Falls Mt
|
3620cfs |
Missouri River Near Ulm Mt
|
3150cfs |
Lake Creek Near Power Mt
|
30cfs |
Sun River Near Vaughn Mt
|
2680cfs |
Muddy Creek At Vaughn Mt
|
86cfs |
Belt Creek Near Monarch Mt
|
14cfs |