Marine Dam Reservoir Report
Nearby: Ron Jacobson Dam Eggebrecht Dam
Last Updated: January 12, 2026
Marine Dam, located in LONEPINE, Montana, serves multiple purposes including fire protection, stock, and as a small fish pond.
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Summary
This private earth dam stands at 15 feet in height and stretches 600 feet in length, with a storage capacity of 387 acre-feet. Completed in 1970, the dam is primarily regulated by the Montana Department of Natural Resources and Conservation (DNRC), with state jurisdiction and permitting in place.
Situated on the TR-LITTLE BITTERROOT RIVER, Marine Dam is classified as having a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. Despite lacking specific inspection and emergency preparedness dates, the dam is designed to meet fire protection and irrigation needs in the region. With its strategic location and purpose, Marine Dam stands as a vital resource for water management and climate resilience in Lake County, Montana.
As enthusiasts of water resources and climate sustainability, Marine Dam offers a fascinating case study for understanding the role of private dams in supporting local communities and ecosystems. With its modest height and storage capacity, this earth dam exemplifies the importance of small-scale water infrastructure in meeting diverse needs, from fire protection to agricultural irrigation. The dam's presence on the TR-LITTLE BITTERROOT RIVER underscores its significance in managing water resources and fostering environmental stewardship in the region.
Year Completed |
1970 |
Dam Length |
600 |
Dam Height |
15 |
River Or Stream |
TR-LITTLE BITTERROOT RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
387 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Flathead River Near Polson Mt
|
12100cfs |
Mill Cr Ab Bassoo Cr Nr Niarada Mt
|
2cfs |
Flathead River At Perma Mt
|
12300cfs |
Clark Fork Near Plains Mt
|
18000cfs |
South Crow Creek Near Ronan Mt
|
9cfs |
Thompson River Near Thompson Falls Mt
|
388cfs |
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.
Marine Dam