Pool No. 1 is an earth dam located in Marshall County, Minnesota, built in 1967. It carries a Low hazard potential classification.
Dam profile
NID height · 11 ft11 ft tall and 8,000 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. 1
The primary purpose of Pool No. 1 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-tr near Thief River Falls.
The dam stands 11 feet tall and stretches 8,000 feet across, and has a maximum storage capacity of 4,830 acre-feet. Completed in 1967, the structure is well into its service life at over 50 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.
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Location
| State | Minnesota |
| County | Marshall |
| Nearest City | Thief River Falls |
| River/Stream | Thief River-tr |
| Coordinates | 48.39800, -95.99650 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 8,000 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 4,830 acre-ft |
| Max Storage | 4,830 acre-ft |
| Normal Storage | 1,690 acre-ft |
| Max Discharge | 1,300 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 | MN00641 |
| Federal ID | MN00641 |
| More Info | State Dam Safety Program |