Severson #2 Reservoir Report
Nearby: Severson #3 Muri #4
Last Updated: December 6, 2025
Severson #2 is a privately owned dam located in Custer County, Montana, specifically in Miles City near the Peterson Draw river.
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Summary
Completed in 1955, this earth dam stands at a height of 21 feet and serves multiple purposes such as fire protection, stock, and a small fish pond. With a storage capacity of 136 acre-feet, the dam is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is inspected regularly to ensure its safety and compliance with state regulations.
Despite being categorized as having a low hazard potential, Severson #2 has not been rated for its current condition. The dam does not have an Emergency Action Plan (EAP) in place, but it meets state regulatory guidelines and is equipped with emergency contacts updated as needed. The risk assessment and management measures for the dam have not been documented, yet the structure remains a vital resource for water management and climate resilience in the region. With its strategic location and key purposes, Severson #2 plays a crucial role in maintaining water security and environmental sustainability in the area.
Year Completed |
1955 |
Dam Length |
435 |
Dam Height |
21 |
River Or Stream |
PETERSON DRAW |
Primary Dam Type |
Earth |
Hydraulic Height |
21 |
Nid Storage |
136 |
Hazard Potential |
Low |
Nid Height |
21 |
Seasonal Comparison
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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.
Severson #2