Cloakus Reservoir Report
Nearby: Crooked Man Dam Lipton
Last Updated: December 20, 2025
Cloakus, located in Toole, Montana, is a state-owned earth dam built in 1947 for fire protection, stock, and small fish pond purposes.
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Summary
With a dam height of 15 feet and a length of 200 feet, Cloakus has a storage capacity of 55 acre-feet, providing essential water resources for the area. The dam is situated on Crooked Coulee, under the jurisdiction of the Montana Department of Natural Resources and Conservation (DNRC), ensuring state regulation, permitting, inspection, and enforcement.
Despite being rated as having a low hazard potential and in "Not Rated" condition, Cloakus plays a crucial role in water resource management and climate resilience in the region. The dam's primary purpose of fire protection highlights its importance in safeguarding the local environment and community from potential wildfires. Additionally, its strategic location and design make it a vital infrastructure for ensuring water availability for livestock and maintaining small fish populations.
As part of the Omaha District's portfolio, Cloakus contributes to the overall water management strategy in Montana. While the dam may not have a significant risk assessment or emergency action plan in place currently, its presence underscores the importance of proactive monitoring and maintenance to ensure its continued functionality in the face of changing climate conditions. Water resource and climate enthusiasts can appreciate Cloakus as a testament to the intersection of human infrastructure and environmental stewardship in maintaining a sustainable water supply for the future.
Year Completed |
1947 |
Dam Length |
200 |
Dam Height |
15 |
River Or Stream |
CROOKED COULEE |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
55 |
Hazard Potential |
Low |
Nid Height |
15 |
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.
Cloakus