Elderly Dam Reservoir Report
Nearby: Rindal O J Rindal
Last Updated: December 5, 2025
Elderly Dam, also known as Rindal Dam, is a privately owned structure located in Fergus County, Montana.
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Summary
Built in 1975, this earth dam stands at a height of 40 feet and has a length of 1300 feet, providing essential fire protection and serving as a stock or small fish pond. The dam has a storage capacity of 560 acre-feet and is situated on Brush Creek, making it a crucial resource for the local community in Roy.
Despite its significant hazard potential, Elderly Dam has not been rated for its condition assessment. However, it is regulated and inspected by the Montana Department of Natural Resources and Conservation (DNRC), ensuring that it meets state standards for safety and functionality. The dam's risk assessment is moderate, indicating a level 3 risk, and it is not under the jurisdiction of the US Army Corps of Engineers.
For water resource and climate enthusiasts, Elderly Dam represents a vital infrastructure for water management and conservation in the region. Its presence supports the local ecosystem and provides essential services for fire protection, stock, and recreational activities. As a privately owned structure, the dam plays a crucial role in sustaining the water needs of the community and highlights the importance of responsible dam ownership and maintenance in the face of changing climate conditions.
Year Completed |
1975 |
Dam Length |
1300 |
Dam Height |
40 |
River Or Stream |
Brush Creek |
Primary Dam Type |
Earth |
Surface Area |
35 |
Hydraulic Height |
40 |
Drainage Area |
4.42 |
Nid Storage |
560 |
Structural Height |
40 |
Hazard Potential |
Significant |
Nid Height |
40 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Missouri River Near Landusky Mt
|
9100cfs |
Judith River Nr Mouth
|
368cfs |
Musselshell River At Mosby Mt
|
12cfs |
Flatwillow Creek Near Mosby Mt
|
17cfs |
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.
Elderly Dam