Parker Reservoir Reservoir Report
Nearby: Gravely Beaver Pond
Last Updated: December 5, 2025
Parker Reservoir, located in Garrison, Montana, is a privately owned water resource primarily used for irrigation purposes.
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Summary
Completed in 1961, this earth dam stands at a height of 30 feet and has a storage capacity of 50 acre-feet, with a normal storage level of 23 acre-feet. The reservoir is situated along Gimlet Creek, within Powell County, and is regulated by the Montana Department of Natural Resources and Conservation (DNRC).
Despite its low hazard potential and current "Not Rated" condition assessment, Parker Reservoir plays a crucial role in supporting agricultural activities in the region. With its strategic location and ample water storage capacity, the reservoir ensures a steady supply of water for irrigation, contributing to the sustainability of local farming operations. Additionally, being under state jurisdiction with enforcement and inspection protocols in place, Parker Reservoir operates in compliance with regulatory standards, ensuring its safe and efficient functioning for water users and the surrounding ecosystem.
As a vital component of Montana's water infrastructure, Parker Reservoir serves as a testament to the state's commitment to water resource management. With its modest size and focused purpose, the reservoir represents a microcosm of the larger efforts to harness and distribute water resources effectively in the face of changing climate conditions. For water resource and climate enthusiasts, Parker Reservoir offers a case study in the intersection of water management, infrastructure development, and environmental stewardship in the American West.
Year Completed |
1961 |
Dam Length |
220 |
Dam Height |
30 |
River Or Stream |
GIMLET CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
30 |
Nid Storage |
50 |
Hazard Potential |
Low |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Little Blackfoot River Near Garrison Mt
|
49cfs |
Nevada Cr Ab Reservoir
|
27cfs |
Clark Fork At Goldcreek Mt
|
248cfs |
Clark Fork At Deer Lodge Mt
|
156cfs |
Tenmile Creek Near Rimini Mt
|
1cfs |
Flint Creek Near Drummond Mt
|
109cfs |
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.
Parker Reservoir
Gallagher Creek