Larson #2 Reservoir Report
Nearby: Clark (Custer) Larson #3
Last Updated: December 6, 2025
Larson #2 is a private dam located in Miles City, Montana, along the TR-Steiger Creek.
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Summary
Completed in 1963, this earth dam stands at a height of 19 feet and has a storage capacity of 267 acre-feet. The primary purposes of Larson #2 are fire protection, stock watering, and creating a small fish pond, making it a versatile resource for the local community.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Larson #2 is state-regulated and meets all necessary permitting, inspection, and enforcement requirements. With a low hazard potential and a condition assessment of "Not Rated," this dam serves as a reliable water source while ensuring minimal risk to surrounding areas. Despite not being under the jurisdiction of the US Army Corps of Engineers, Larson #2 remains a crucial asset for water resource and climate enthusiasts in the region.
As an essential structure for water management in Custer County, Larson #2 plays a vital role in maintaining water availability for various purposes. With its strategic location and efficient design, this dam exemplifies the importance of responsible water infrastructure development in the face of changing climate conditions. Its low hazard potential and state-regulated status make Larson #2 a valuable asset for sustainable water resource management in Montana's landscape.
Year Completed |
1963 |
Dam Length |
2400 |
Dam Height |
19 |
River Or Stream |
TR-STEIGER CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
19 |
Nid Storage |
267 |
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.
Larson #2