Colver Reservoir Report
Last Updated: December 5, 2025
Colver is a privately owned irrigation dam located in Fergus County, Montana, along the TR-Warm Spring Creek.
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Summary
Completed in 1939, this earth dam stands at 22 feet in height and spans 300 feet in length, with a storage capacity of 107 acre-feet. The dam is regulated by the Montana Department of Natural Resources and Conservation (DNRC), ensuring compliance with state jurisdiction, permitting, inspection, and enforcement requirements.
Despite being classified as low hazard potential and not rated for condition assessment, Colver serves a vital purpose in providing irrigation water for agricultural activities in the area. The dam is situated in a scenic location in the city of Hanover, offering a serene backdrop for water resource and climate enthusiasts to explore. With its historical significance and contribution to the local ecosystem, Colver represents a unique landmark in the water management infrastructure of Montana's agricultural landscape.
While lacking in certain detailed information such as recent inspection dates and emergency preparedness measures, Colver remains an important feature in the region's water resource management system. As a reflection of past engineering practices, the dam stands as a testament to the legacy of irrigation development in Montana and the ongoing efforts to maintain and monitor the safety and functionality of such critical structures for water supply and agricultural sustainability in the area.
Year Completed |
1939 |
Dam Length |
300 |
Dam Height |
22 |
River Or Stream |
TR-WARM SPRING CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
22 |
Nid Storage |
107 |
Hazard Potential |
Low |
Nid Height |
22 |
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.
Colver