Highway 75 Dam Reservoir Report
Last Updated: December 13, 2025
The Highway 75 Dam, located in Lac qui Parle, Minnesota, is a crucial structure owned and managed by the US Army Corps of Engineers for flood risk reduction along the Minnesota River.
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Summary
Constructed in 1974, this earth dam stands at a height of 32 feet and spans a length of 16,160 feet, with a maximum storage capacity of 91,000 acre-feet and a normal storage of 11,700 acre-feet. The dam also serves multiple purposes, including flood risk reduction, fish and wildlife pond, recreation, and water supply.
With a controlled spillway type and low hazard potential, the Highway 75 Dam is regularly monitored and maintained by the US Army Corps of Engineers to manage dam-related flood risks effectively. The agency implements risk management measures by engaging with local emergency managers, updating emergency action plans, and conducting regular inspections and repairs to ensure the dam's structural integrity. Despite the dam's risk assessment of 'Very High (1)', the USACE's proactive approach to risk mitigation and public awareness aims to address potential issues and ensure the dam's continued functionality in the face of severe weather events and water management challenges.
Year Completed |
1974 |
Dam Length |
16160 |
Dam Height |
10 |
River Or Stream |
MINNESOTA RIVER |
Primary Dam Type |
Earth |
Surface Area |
2800 |
Hydraulic Height |
25 |
Drainage Area |
1700 |
Nid Storage |
91000 |
Structural Height |
32 |
Outlet Gates |
Bascule - 0 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
32 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Yellow Bank River Near Odessa
|
100cfs |
Minnesota River At Ortonville
|
130cfs |
Whetstone River Near Big Stone City
|
29300cfs |
Pomme De Terre River At Appleton
|
237cfs |
Lac Qui Parle River Near Lac Qui Parle
|
536cfs |
Minnesota River Near Lac Qui Parle
|
1200cfs |
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.
Highway 75 Dam