Algol Reservoir Report
Nearby: Ratzburg's Army Fowler #1 (Pondera)
Last Updated: December 5, 2025
Algol is a private earth dam located in Loma, Montana, along Dead Indian Coulee.
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Summary
Built in 1959, it serves multiple purposes such as fire protection, stock watering, and a small fish pond, with a storage capacity of 68 acre-feet. With a height of 20 feet and a length of 300 feet, Algol is regulated by the Montana Department of Natural Resources and Conservation, ensuring compliance with state permitting, inspection, and enforcement requirements.
Despite being classified as having a significant hazard potential, Algol's condition assessment is currently listed as "Not Rated." The dam does not have an emergency action plan in place, but it meets state jurisdiction and regulatory guidelines. With Congressman Greg Gianforte representing the area in Congressional District 00, Algol's location in Toole County highlights its importance for water resource management in the region.
Overall, Algol stands as a key infrastructure for water management in the area, providing essential services for fire protection and agricultural needs. As a privately owned structure, it plays a vital role in supporting the local community and ecosystem along Dead Indian Coulee, showcasing the intersection of water resources and climate resilience in the region.
Year Completed |
1959 |
Dam Length |
300 |
Dam Height |
20 |
River Or Stream |
DEAD INDIAN COULEE |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
68 |
Hazard Potential |
Significant |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Marias River Near Chester Mt
|
249cfs |
Marias River Near Shelby Mt
|
305cfs |
Teton River Near Dutton Mt
|
83cfs |
Lake Creek Near Power Mt
|
30cfs |
Marias River Near Loma Mt
|
335cfs |
Cut Bank Creek At Cut Bank Mt
|
138cfs |
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.
Algol