Erickson #2 Reservoir Report
Nearby: Montana #6 Gearhart #13
Last Updated: December 7, 2025
Erickson #2 is a private earth dam located in Rosebud County, Montana, specifically in Forsyth.
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Summary
Built in 1945 by the USDA NRCS, this dam serves multiple purposes including fire protection, stock, and small fish pond. It stands at a height of 25 feet and has a storage capacity of 43 acre-feet, with a normal storage level of 29 acre-feet. The dam is situated on Greasewood Creek and has a drainage area of 1.88 square miles, with a maximum discharge capacity of 500 cubic feet per second.
Despite its low hazard potential, Erickson #2 has a moderate risk assessment rating of 3. The dam's spillway is uncontrolled and measures 50 feet in width. While the condition assessment is currently not rated, the dam is subject to state regulation, inspection, and enforcement by the Department of Natural Resources Conservation. With a strategic location in Congressional District 00, Montana, this dam plays a crucial role in managing water resources for fire protection, livestock, and aquatic life in the area.
Water resource and climate enthusiasts will find Erickson #2 to be an intriguing structure due to its historical significance, multi-purpose design, and location in a diverse ecosystem. As a key feature on Greasewood Creek, this private dam contributes to the overall water management efforts in Rosebud County. With a focus on safety and risk assessment, stakeholders can appreciate the importance of maintaining and monitoring Erickson #2 to ensure its continued functionality and resilience in the face of changing environmental conditions.
Year Completed |
1945 |
Dam Length |
100 |
Dam Height |
25 |
River Or Stream |
GREASEWOOD CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Drainage Area |
1.88 |
Nid Storage |
43 |
Hazard Potential |
Low |
Nid Height |
25 |
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.
Erickson #2