Pool No. 27 is an earth dam located in Marshall County, Minnesota, built in 1938. It carries a Low hazard potential classification.
Dam profile
NID height · 16 ft16 ft tall and 1,000 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Pool No. 27
The primary purpose of Pool No. 27 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 USFWS (federal). It impounds the Thief River near Thief River Falls.
The dam stands 16 feet tall and stretches 1,000 feet across, and has a maximum storage capacity of 61,310 acre-feet. Completed in 1938, the structure is well-established, with more than 75 years of service.
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.
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Location
| State | Minnesota |
| County | Marshall |
| Nearest City | Thief River Falls |
| River/Stream | Thief River |
| Coordinates | 48.31474, -96.00968 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 61,310 acre-ft |
| Max Storage | 61,310 acre-ft |
| Normal Storage | 15,445 acre-ft |
| Max Discharge | 25,500 cfs |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | USFWS |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00630 |
| Federal ID | MN00630 |
| More Info | State Dam Safety Program |