Ed Mcintyre Reservoir Report
Nearby: The Moonspinner Wanken
Last Updated: December 7, 2025
Ed Mcintyre is a privately owned earth dam located in Toole, Montana, along the TR-MARIAS RIVER.
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Summary
Built in 1889, this dam serves multiple purposes including fire protection, stock watering, and maintaining a small fish pond. Standing at a height of 15 feet and a length of 429 feet, it has a storage capacity of 62 acre-feet, with a normal storage level of 32 acre-feet. Despite its age, the dam is rated as having a low hazard potential and its condition is currently not rated.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Ed Mcintyre is state regulated and subject to regular inspection, enforcement, and permitting. The dam is situated in a picturesque location in LOMA, Montana, within the Congressional District 00 and under the representation of Congressman Greg Gianforte (R). The dam's emergency action plan status, risk assessment, and inundation maps are currently not documented, but it meets the necessary regulatory guidelines for safety and operation.
For water resource and climate enthusiasts, Ed Mcintyre offers a historical glimpse into early water management practices in Montana. With its primary purpose of providing essential water resources for fire protection and livestock, this dam showcases the importance of small-scale infrastructure in rural communities. Its location along the TR-MARIAS RIVER highlights the interconnectedness of water resources and ecosystems, making it a valuable site for studying the impacts of climate change on local water systems.
Year Completed |
1889 |
Dam Length |
429 |
Dam Height |
15 |
River Or Stream |
TR-MARIAS RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
62 |
Hazard Potential |
Low |
Nid Height |
15 |
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.
Ed Mcintyre