Glasgow Sewage Lagoon Reservoir Report
Nearby: Sweet Carolyn Hanson
Last Updated: December 19, 2025
Glasgow Sewage Lagoon, located in Valley County, Montana, serves multiple purposes including fire protection, stock watering, and small fish pond.
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Summary
Built in 1955, this earth dam structure stands at a height of 9 feet and has a storage capacity of 200 acre-feet. The lagoon is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is subject to regular inspections to ensure compliance with state regulations.
Situated along the Milk River, Glasgow Sewage Lagoon is owned and operated by the local government of Glasgow. Despite its low hazard potential, the dam has not been rated for its condition as of yet. With a maximum storage capacity of 200 acre-feet and a normal storage level of 189 acre-feet, the lagoon plays a crucial role in managing the water resources in the area. Although there are currently no associated structures with the lagoon, its strategic location and purpose make it a significant asset for the community.
In the event of an emergency, it is unclear whether an emergency action plan (EAP) has been prepared for Glasgow Sewage Lagoon. The risk assessment and management measures for the dam are also not specified in the data provided. Despite these uncertainties, the lagoon remains a vital resource for water management and environmental protection in the region, highlighting the importance of regular inspections and maintenance to ensure its continued functionality and safety.
Year Completed |
1955 |
Dam Length |
3000 |
Dam Height |
9 |
River Or Stream |
TR-MILK RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
6 |
Nid Storage |
200 |
Hazard Potential |
Low |
Nid Height |
9 |
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.
Glasgow Sewage Lagoon