Cain Dam Reservoir Report
Nearby: Blue Cheese Tigar Milk
Last Updated: December 19, 2025
Cain Dam, located in Glasgow, Valley County, Montana, is a privately owned irrigation structure completed in 1901 on the TR-Milk River.
°F
°F
mph
Wind
%
Humidity
Summary
With a dam height of 13 feet and a length of 500 feet, Cain Dam has a storage capacity of 592 acre-feet, primarily for irrigation purposes. The dam is classified as an Earth dam and is regulated by the Montana Department of Natural Resources and Conservation (DNRC), with state permitting, inspection, and enforcement in place to ensure its safety and compliance.
Despite being categorized as having a low hazard potential and not yet rated for its condition assessment, Cain Dam plays a crucial role in supporting agricultural activities in the region. The dam's normal storage capacity of 92 acre-feet helps maintain a stable water supply for irrigation, contributing to the overall sustainability of water resources in the area. With its strategic location and historical significance, Cain Dam serves as a valuable asset for water management and climate resilience efforts in Montana.
As a key infrastructure for water resource management, Cain Dam underscores the importance of maintaining and monitoring dams to ensure their safety and efficiency. While the dam has not been inspected recently and lacks an official assessment of its condition, ongoing regulatory oversight and the potential for emergency action planning are critical aspects to consider for the long-term sustainability of the structure. For water resource and climate enthusiasts, Cain Dam represents a significant landmark that highlights the intersection of human intervention and natural ecosystems in water management practices.
Year Completed |
1901 |
Dam Length |
500 |
Dam Height |
13 |
River Or Stream |
TR-MILK RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
13 |
Nid Storage |
592 |
Hazard Potential |
Low |
Nid Height |
13 |
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.
Cain Dam