The reservoir has a dam height of 20 feet and a storage capacity of 211 acre-feet, with a normal storage level of 89 acre-feet. Despite its low hazard potential, the dam is state-regulated and inspected regularly by the Montana Department of Natural Resources and Conservation.
The reservoir's earth dam spans 990 feet and has a maximum discharge capacity of 120 cubic feet per second. Although the condition assessment is currently "Not Rated," the dam is considered to have a low hazard potential. The emergency action plan status and risk assessment for Cowan Reservoir are not specified, but the reservoir is not owned or funded by any federal agencies.
Overall, Cowan Reservoir serves as a vital water resource for irrigation in Chouteau County, Montana, and provides a sustainable source of water for agricultural purposes. Its location on Duck Creek, combined with its historical significance and regulated maintenance, make it an interesting site for water resource and climate enthusiasts to explore and study.
Wind
Humidity
Year Completed |
1936 |
Dam Length |
990 |
Dam Height |
20 |
River Or Stream |
DUCK CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
211 |
Hazard Potential |
Low |
Nid Height |
20 |
Big Sandy Creek Near Havre Mt
|
6cfs |
Milk River At Havre Mt
|
29cfs |
Missouri River At Virgelle Mt
|
7350cfs |
Clear Creek Near Chinook Mt
|
21cfs |
Teton River At Loma Mt
|
127cfs |
Marias River Near Loma Mt
|
451cfs |
| Location | Reservations | Toilets |
|---|---|---|
Hill County Beaver Creek Park
|
||
Beaver Creek County Park
|
||
Bearpaw Lake FAS
|