Lost River Pool
Lost River Pool is an earth dam located in Marshall County, Minnesota, built in 1988. It carries a Low hazard potential classification and has a fair condition assessment.
About Lost River Pool
The primary purpose of Lost River Pool is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Mndnr-fisheries, Red Lake Wd (state). It impounds the Lost River near Thief River Falls.
The dam stands 14 feet tall and stretches 25,000 feet across, creates a reservoir covering 2,000 acres, has a maximum storage capacity of 15,000 acre-feet, and collects water from a drainage area of 40 square miles. Completed in 1988, the structure is 38 years 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 06/11/2015. That was over 10 years ago.
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Location
| State | Minnesota |
| County | Marshall |
| Nearest City | Thief River Falls |
| River/Stream | Lost River |
| Coordinates | 48.26582, -95.97994 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 10 ft |
| Dam Length | 25,000 ft |
| Year Completed | 1988 (38 years old) |
Storage & Hydraulics
| NID Storage | 15,000 acre-ft |
| Max Storage | 15,000 acre-ft |
| Normal Storage | 5,500 acre-ft |
| Surface Area | 2,000 acres |
| Drainage Area | 40 sq mi |
| Max Discharge | 600 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | MNDNR-Fisheries, Red Lake WD |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/11/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00924 |
| Federal ID | MN00924 |
| More Info | State Dam Safety Program |