Robinson #7 Reservoir Report
Nearby: Robinson #4 Robinson #3
Last Updated: December 6, 2025
Robinson #7, located in Mizpah, Montana, is a privately owned Earth dam completed in 1950 for fire protection, stock, and small fish pond purposes.
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Summary
This dam, standing at 19 feet tall with a length of 350 feet, has a storage capacity of 96 acre-feet and serves the community's water needs with a normal storage of 33 acre-feet. Situated on the TR-Mizpah Creek, this structure is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is inspected, permitted, and enforced by the state authorities to ensure its safety and compliance with regulations.
With a low hazard potential and a condition assessment not yet rated, Robinson #7 plays a crucial role in providing essential water resources for the surrounding area. Despite not being under the jurisdiction of the US Army Corps of Engineers, this dam serves as a vital asset for fire protection and livestock water supply in Custer County, Montana. Its strategic location and purpose make it a key infrastructure for maintaining water security and supporting the local ecosystem, highlighting the importance of responsible management and maintenance of this essential resource in the face of changing climate conditions.
As water resource and climate enthusiasts continue to monitor and assess the impact of climate change on water infrastructure, Robinson #7 stands as a testament to the importance of sustainable water management practices. With its history dating back to the mid-20th century, this dam serves as a reminder of the critical role that reservoirs play in supporting rural communities and wildlife habitats. By staying vigilant in monitoring its condition and implementing risk management measures, stakeholders can ensure the longevity and effectiveness of Robinson #7 in meeting the water needs of its users while adapting to the challenges posed by a changing climate.
Year Completed |
1950 |
Dam Length |
350 |
Dam Height |
19 |
River Or Stream |
TR-MIZPAH CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
19 |
Nid Storage |
96 |
Hazard Potential |
Low |
Nid Height |
19 |
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.
Robinson #7