Mclaren Dam
Mclaren Dam is an earth dam located in Blaine County, Montana, built in 1890. It carries a Low hazard potential classification and has a poor condition assessment.
About Mclaren Dam
The primary purpose of Mclaren Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Us Fish And Wildlife Service (federal). It impounds the Hay Coulee.
The dam stands 24 feet tall and stretches 450 feet across, creates a reservoir covering 192 acres, has a maximum storage capacity of 3,275 acre-feet, and collects water from a drainage area of 35 square miles. Completed in 1890, the structure is over a century old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 09/23/2020.
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Location
| State | Montana |
| County | Blaine |
| River/Stream | Hay Coulee |
| Coordinates | 48.81333, -109.42499 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 450 ft |
| Year Completed | 1890 (136 years old) |
Storage & Hydraulics
| NID Storage | 3,275 acre-ft |
| Max Storage | 3,275 acre-ft |
| Normal Storage | 900 acre-ft |
| Surface Area | 192 acres |
| Drainage Area | 35 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | US FISH AND WILDLIFE SERVICE |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 09/23/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MT00554 |
| Federal ID | MT00554 |
| More Info | State Dam Safety Program |