Morrison Reservoir Report
Nearby: Simple Simon Dam Lang Corners
Last Updated: December 5, 2025
Morrison is a private earth dam located in Loring, Montana, along the TR-Little Cottonwood Creek.
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Summary
Built in 1940, this dam stands at a height of 20 feet and has a storage capacity of 91 acre-feet, primarily serving the purposes of fire protection, stock, and small fish pond. With a low hazard potential and a condition assessment that is currently not rated, Morrison is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and undergoes regular state inspections and enforcement to ensure its safety and compliance.
This dam, situated in Phillips County, Montana, is under the jurisdiction of the state and has a state regulatory agency overseeing its permitting, inspection, and enforcement processes. While it has not been modified in recent years and lacks certain data such as surface area and maximum discharge, Morrison remains a vital asset for water resource management in the region. With Greg Gianforte as the Congressional Representative for the area, Morrison continues to play a critical role in providing water for fire protection, livestock, and recreational activities in the surrounding community.
Despite its lack of a current condition assessment, Morrison's low hazard potential and state-regulated status indicate that it is a well-maintained structure with established safety protocols in place. As a key feature in the water infrastructure of Loring, Montana, this dam stands as a testament to the importance of sustainable water resource management in the face of changing climate conditions. Enthusiasts and stakeholders interested in water resources and climate resilience can look to Morrison as an example of responsible dam ownership and operation in the state of Montana.
Year Completed |
1940 |
Dam Length |
600 |
Dam Height |
20 |
River Or Stream |
TR-LITTLE COTTONWOOD CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
20 |
Nid Storage |
91 |
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.
Morrison