Crow Reservoir Report
Nearby: Maughan Dam Ninepipe
Last Updated: December 5, 2025
Crow is a federally owned dam located in Montana, specifically in Lake County.
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Summary
Built in 1933 by the Bureau of Indian Affairs, this earth dam stands at a structural height of 99 feet and spans 900 feet in length. Its primary purpose is for irrigation, with a storage capacity of 10,350 acre-feet.
The dam, situated on Crow Creek, is under the jurisdiction of the Bureau of Indian Affairs and is not regulated by the state. With a high hazard potential and a very high risk assessment rating, it is important to note that the condition assessment of Crow is currently unavailable. Despite this, the Emergency Action Plan (EAP) was last revised in 2015, indicating that measures are in place to respond to any potential emergencies.
Crow serves as a critical water resource for irrigation in the area, and its safety and maintenance are vital for the community. With its controlled spillway and high-risk potential, stakeholders and authorities must ensure that proper risk management measures are in place to safeguard the surrounding areas and ensure the dam's continued functionality.
Year Completed |
1933 |
Dam Length |
900 |
River Or Stream |
CROW CREEK |
Primary Dam Type |
Earth |
Nid Storage |
10350 |
Structural Height |
99 |
Hazard Potential |
High |
Nid Height |
99 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
South Crow Creek Near Ronan Mt
|
9cfs |
Flathead River Near Polson Mt
|
8210cfs |
Mission Cr Ab Reservoir Nr St Ignatius Mt
|
27cfs |
Flathead River At Perma Mt
|
8540cfs |
South Fork Jocko River Near Arlee Mt
|
83cfs |
Clark Fork Near Plains Mt
|
11300cfs |
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.
Crow