Lake Seventeen Dam Reservoir Report
Nearby: Mitchell Powell #2 (Blaine)
Last Updated: December 5, 2025
Lake Seventeen Dam, located in Blaine, Montana, was completed in 1930 and is managed by the Department of the Interior's Bureau of Indian Affairs.
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Summary
The dam has a height of 15 feet and a storage capacity of 4000 acre-feet. Although not regulated by the state, the dam is considered to have a low hazard potential and its condition assessment is currently not available.
Despite lacking specific information on its primary purpose and dam type, Lake Seventeen Dam serves as an essential structure for water resource management in the region. With its low hazard potential, the dam provides a reliable source of water storage and helps mitigate potential flooding risks. Its construction in the early 20th century reflects the importance of water infrastructure in supporting local communities and ecosystems. Climate enthusiasts and water resource experts can appreciate the historical significance and functional role of Lake Seventeen Dam in maintaining water security in Montana.
Year Completed |
1930 |
Dam Height |
15 |
Nid Storage |
4000 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Peoples Creek Near Hays Mt
|
4cfs |
Milk River Near Harlem Mt
|
69cfs |
Missouri River Near Landusky Mt
|
9100cfs |
Milk River Near Dodson Mt
|
68cfs |
Clear Creek Near Chinook Mt
|
21cfs |
Battle Creek Near Chinook Mt
|
12cfs |
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.
Lake Seventeen Dam