Andy Capp Reservoir Report
Nearby: Picard Reservoir Mattingly
Last Updated: December 14, 2025
Andy Capp, located in Culbertson, Montana, is a privately owned earth dam built in 1949 for multiple purposes including fire protection, stock, and small fish pond.
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Summary
With a dam height of 12 feet and a capacity of 206 acre-feet, this low hazard potential structure on TR-Sheep Creek is regulated by the Montana Department of Natural Resources and Conservation (DNRC). The dam serves as a vital resource for the local community and surrounding areas, ensuring water availability for various needs.
Despite its age, Andy Capp remains in good condition and has not been rated for its structural integrity. The dam's primary purpose of fire protection and water storage contributes to its significance in the region, providing essential resources for both human and ecological needs. With state jurisdiction and regulatory oversight in place, the dam is regularly inspected and maintained to ensure its continued functionality and safety.
As a key feature in the water resource infrastructure of Roosevelt County, Montana, Andy Capp plays a crucial role in water management and conservation efforts. Its strategic location and purposeful design make it a valuable asset for mitigating potential risks and safeguarding water resources in the area. For water resource and climate enthusiasts, Andy Capp serves as a fascinating example of how private dams contribute to ecosystem resilience and community well-being in a changing climate.
Year Completed |
1949 |
Dam Length |
400 |
Dam Height |
12 |
River Or Stream |
TR-SHEEP CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
12 |
Nid Storage |
206 |
Hazard Potential |
Low |
Nid Height |
12 |
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.
Andy Capp