Echo Reservoir Reservoir Report
Nearby: Delmar A C Lincoln
Last Updated: December 20, 2025
Echo Reservoir, located in Liberty County, Montana, is a privately owned irrigation reservoir designed by the USDA NRCS and regulated by the DNRC.
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Summary
Completed in 1950, this Earth dam stands at a height of 18 feet and has a storage capacity of 205 acre-feet, with a normal storage level of 119 acre-feet. The reservoir serves as a vital water source for irrigation purposes, drawing water from the TR-Marias River.
Managed by the Natural Resources Conservation Service, Echo Reservoir has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. With a maximum discharge capacity of 440 cubic feet per second, the reservoir plays a crucial role in supporting agricultural activities in the area. Despite not being under the jurisdiction of a federal agency, Echo Reservoir remains an essential infrastructure for water resource management in the region.
Situated in the Omaha District and within Congressional District 00 of Montana, Echo Reservoir plays a key role in water management and irrigation in the region. Although lacking recent inspection and assessment data, the reservoir continues to provide essential water storage and distribution services for the surrounding agricultural community. With its modest size and low hazard potential, Echo Reservoir stands as a testament to the importance of private irrigation infrastructure in sustaining water resources in Montana.
Year Completed |
1950 |
Dam Length |
250 |
Dam Height |
18 |
River Or Stream |
TR-MARIAS RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Drainage Area |
1.09 |
Nid Storage |
205 |
Hazard Potential |
Low |
Nid Height |
18 |
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.
Echo Reservoir