Engstrom Reservoir Report
Nearby: Medicine Lake Dam No. 4 Dewey
Last Updated: December 19, 2025
Engstrom, located in Sheridan, Montana, is a privately-owned dam with a primary purpose of providing fire protection, stock watering, and serving as a small fish pond.
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Summary
Built in 1967 by the USDA NRCS, this earth dam stands at a height of 24 feet and has a storage capacity of 114 acre-feet. The dam is regulated by the DNRC and is subject to state permitting, inspection, and enforcement.
The dam on Engstrom is associated with Wolf Creek and is designed to handle a maximum discharge of 250 cubic feet per second through an uncontrolled spillway that is 50 feet wide. With a drainage area of 3.13 square miles, the dam serves a vital role in managing water resources in the region. Despite being rated as having a low hazard potential, the risk assessment for Engstrom indicates a moderate level of risk.
Although the condition of Engstrom has not been officially assessed, it is clear that the dam plays a crucial role in water management for the area. With its strategic location and design, Engstrom provides valuable services for fire protection, livestock, and aquatic life. Water resource and climate enthusiasts will find Engstrom to be an interesting case study in dam management and the intersection of human activity with natural ecosystems.
Year Completed |
1967 |
Dam Length |
200 |
Dam Height |
24 |
River Or Stream |
TR-WOLF CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
24 |
Drainage Area |
3.13 |
Nid Storage |
114 |
Hazard Potential |
Low |
Nid Height |
24 |
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.
Engstrom