Engdall Reservoir #2 Reservoir Report
Nearby: Engdahl #4 Engdall Reservoir #1
Last Updated: January 11, 2026
Engdall Reservoir #2, located in Garfield, Montana, was completed in 1934 by the USDA NRCS and serves multiple purposes including fire protection, stock watering, and small fish pond management.
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Summary
With a dam height of 25 feet and a storage capacity of 129 acre-feet, this earth dam structure on TR-HELL CREEK is regulated by the Montana Department of Natural Resources and Conservation (DNRC). The reservoir has a low hazard potential and a moderate risk assessment rating.
Despite being privately owned, Engdall Reservoir #2 is subject to state regulation, inspection, and enforcement to ensure its safety and compliance with guidelines. The reservoir, with a maximum discharge capacity of 500 cubic feet per second, features an uncontrolled spillway with a width of 100 feet. The risk management measures and emergency action plan status for this reservoir are currently not rated or updated, highlighting the need for ongoing monitoring and maintenance to mitigate any potential risks associated with this vital water resource.
In conclusion, Engdall Reservoir #2 stands as a crucial water source for the local community, providing essential services such as fire protection and stock watering. With its historical significance and continued state oversight, the reservoir serves as a reminder of the importance of sustainable water resource management in the face of evolving climate challenges. As water resource and climate enthusiasts, understanding and appreciating the role of reservoirs like Engdall Reservoir #2 is key to ensuring the long-term resilience of our water infrastructure in the midst of changing environmental conditions.
Year Completed |
1934 |
Dam Length |
200 |
Dam Height |
25 |
River Or Stream |
TR-HELL CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
25 |
Drainage Area |
1 |
Nid Storage |
129 |
Hazard Potential |
Low |
Nid Height |
25 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Nelson Creek Near Van Norman Mt
|
33cfs |
Musselshell River At Mosby Mt
|
240cfs |
Flatwillow Creek Near Mosby Mt
|
17cfs |
Milk River At Nashua Mt
|
233cfs |
Milk River At Tampico Mt
|
123cfs |
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.
Engdall Reservoir #2