Pool No. 7 Reservoir Report
Nearby: Pool No. 3 Pool No. 1
Last Updated: December 12, 2025
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Summary
7, located in Thief River Falls, Minnesota, is a Federal-owned earth dam completed in 1954 with a primary purpose classified as "Other." This dam stands at a height of 8 feet and stretches 2600 feet in length, with a storage capacity of 11,800 acre-feet. Despite its low hazard potential, Pool No. 7 plays a crucial role in managing water resources along the Thief River, ensuring the safety and well-being of the surrounding community.
Managed by the Omaha District of the US Army Corps of Engineers, Pool No. 7 serves as a vital component in the region's water management infrastructure. With a normal storage capacity of 820 acre-feet and a maximum discharge rate of 1300 cubic feet per second, this dam plays a key role in flood control and water supply management. Despite its simple buttress core design, Pool No. 7 continues to operate effectively, contributing to the overall resilience of the water resource system in Marshall County.
While Pool No. 7 is not currently rated for its condition, its essential role in water resource management cannot be understated. As climate change continues to impact water availability and quality, structures like Pool No. 7 will become increasingly important in ensuring the sustainable management of water resources in Minnesota. Its strategic location and design make it a critical asset in the fight against climate-related water challenges, highlighting the importance of ongoing monitoring and maintenance to safeguard its functionality for years to come.
Year Completed |
1954 |
Dam Length |
2600 |
Dam Height |
8 |
River Or Stream |
THIEF RIVER-TR |
Primary Dam Type |
Earth |
Nid Storage |
11800 |
Structural Height |
8 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
8 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
Pool No. 7