Murphy #1 Reservoir Report
Nearby: Murphy + Sons #1 State-Murphy Dam
Last Updated: December 5, 2025
Murphy #1 is a privately owned earth dam located in McCone, Montana, along the TR-Nelson Creek.
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Summary
Built in 1965, the dam serves multiple purposes including fire protection, stock, and small fish pond. With a height of 15 feet and a storage capacity of 668 acre-feet, Murphy #1 is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is inspected regularly to ensure its safe operation.
Despite its low hazard potential, Murphy #1 has not been rated for its condition assessment. The dam has not undergone any modifications since its construction and does not have an emergency action plan in place. Although the dam is not owned or funded by any federal agency, it plays a crucial role in providing water resources for various uses in the area. As an important infrastructure for the local community, it is essential that Murphy #1 continues to be monitored and maintained to prevent any potential risks or hazards.
Located in a picturesque setting in Montana, Murphy #1 stands as a testament to the importance of sustainable water resource management in the face of changing climate conditions. As climate enthusiasts, it is crucial to recognize the significance of dams like Murphy #1 in providing essential services while also being mindful of the potential challenges they may face in the future. Through continued monitoring and maintenance, Murphy #1 can continue to serve its purpose effectively and contribute to the resilience of the local ecosystem.
Year Completed |
1965 |
Dam Length |
600 |
Dam Height |
15 |
River Or Stream |
TR-NELSON CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
668 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nelson Creek Near Van Norman Mt
|
33cfs |
Redwater River At Circle Mt
|
4cfs |
Missouri River Near Wolf Point Mt
|
5020cfs |
Milk River At Nashua Mt
|
233cfs |
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.
Murphy #1