Cement Dam Reservoir Report
Nearby: Red Fish (Fergus)
Last Updated: December 5, 2025
Cement Dam, also known as Ayers Colony #1, is a privately owned structure located in Teigen, Montana.
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Summary
Completed in 1936, this Earth-type dam has a height of 17 feet and a hydraulic height of 20 feet, serving primarily for irrigation purposes on the North Fork McDonald Creek. With a storage capacity of 69 acre-feet and a surface area of 8.9 acres, the dam plays a crucial role in providing water for agricultural activities in the region.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Cement Dam is regulated, inspected, and enforced to ensure its safety and functionality. Despite being classified as having a low hazard potential and not currently rated for its condition, the dam continues to be an essential component of the local water resource infrastructure. With a history dating back to the early 20th century, Cement Dam stands as a testament to human ingenuity in harnessing water resources for sustainable development in Montana.
As a key feature in the irrigation network of Fergus County, Cement Dam contributes to the overall water management efforts in the region. Its association with the Omaha District and the oversight from the state regulatory agencies highlight the collaborative efforts involved in maintaining water infrastructure. With its historical significance and ongoing role in supporting agriculture, Cement Dam underscores the importance of sustainable water resource management in the face of changing climate conditions.
Year Completed |
1936 |
Dam Length |
107.5 |
Dam Height |
17 |
River Or Stream |
NORTH FORK MCDONALD CREEK |
Primary Dam Type |
Earth |
Surface Area |
8.9 |
Hydraulic Height |
20 |
Drainage Area |
46.8 |
Nid Storage |
69 |
Hazard Potential |
Low |
Nid Height |
20 |
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.
Cement Dam