Little Lake, located in Missoula, Montana, serves as a vital water supply source for the local community.
Wind
Humidity
Built in 1912, this Rockfill dam stands at a height of 25 feet and has a storage capacity of 298 acre-feet. The dam's primary purpose is water supply, and it is regulated by the Montana Department of Natural Resources and Conservation.
With a surface area of 32 acres and a drainage area of 0.45 square miles, Little Lake plays a crucial role in regulating the flow of the TR-Wrangle Creek. The dam has a spillway width of 5 feet and a maximum discharge capacity of 500 cubic feet per second. Despite being rated as significant in terms of hazard potential, the dam's condition assessment is currently marked as "Not Rated."
Overall, Little Lake is a key infrastructure for water management in the region, providing essential resources for both human consumption and environmental sustainability. Its historical significance and continued maintenance efforts make it a valuable asset in the face of changing climate conditions and water resource challenges. As a regulated structure with a moderate risk assessment, Little Lake demonstrates the importance of proactive management and monitoring to ensure the safety and reliability of water resources in the area.
Year Completed |
1912 |
Dam Length |
300 |
Dam Height |
25 |
River Or Stream |
TR-WRANGLE CREEK |
Primary Dam Type |
Rockfill |
Surface Area |
32 |
Hydraulic Height |
14 |
Drainage Area |
0.45 |
Nid Storage |
298 |
Structural Height |
25 |
Outlet Gates |
Uncontrolled |
Hazard Potential |
Significant |
Nid Height |
25 |
South Fork Jocko River Near Arlee Mt
|
83cfs |
Clark Fork Above Missoula Mt
|
1140cfs |
Blackfoot River Near Bonner Mt
|
382cfs |
Clark Fork Below Missoula Mt
|
2310cfs |
Bitterroot River Near Missoula Mt
|
1010cfs |
Clark Fork At Turah Bridge Nr Bonner Mt
|
718cfs |
Wrangle Creek Headwaters, Sec. 18, T15N, R18W To Mainstem, Sec. 21, T15N, R18W
Lake Creek Headwaters, Sec. 30, T15N, R18W To Mainstem, Sec. 21, T15N, R18W
High Falls Creek Headwaters, Sec. 5, T14N, R18W To Mainstem, Sec. 2, T14N, R18W
East Fork Headwaters, Sec. 8, T14N, R17W To Mainstem, Sec. 14, T14N, R18W
Spring Gulch Headwaters, Sec. 12, T14N, R19W To Mainstem, Sec. 35, T14N, R19W
Mainstem Headwaters, Sec. 4, T15N, R18W To Boundary, Sec. 2, T13N, R18W