Summary
Completed in 1974, this earth dam stands at a height of 15 feet and stretches 570 feet in length, with a storage capacity of 145 acre-feet. The dam is regulated by the Montana Department of Natural Resources and Conservation, with state jurisdiction and permitting in place to ensure proper inspection and enforcement measures are followed.
Despite being classified as having a low hazard potential and not yet rated for condition assessment, Manley #3 serves a crucial purpose in providing irrigation water to agricultural land in the area. The dam's location in the scenic countryside of Helmville makes it a vital resource for the local community, contributing to the sustainability of water resources in the region. The dam's emergency action plan status and risk assessment measures are currently not available, indicating a potential area for improvement in terms of safety and preparedness.
With its strategic position in the beautiful landscape of Powell County and its essential role in irrigation, Manley #3 stands as a testament to the importance of water resource management in the face of changing climate conditions. As a privately owned structure operating under state regulations, this dam exemplifies the intersection of human ingenuity and environmental stewardship in ensuring the sustainable use of water for the benefit of the local community and ecosystem.
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15-Day Weather Outlook
Year Completed |
1974 |
Dam Length |
570 |
Dam Height |
15 |
River Or Stream |
DOUGLAS CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Nid Storage |
145 |
Hazard Potential |
Low |
Nid Height |
15 |
Seasonal Comparison
5-Day Hourly Forecast Detail
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Drummond City Park
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Browns Lake FAS
|
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Garnet Ghost Town Dispersed
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Manley #3
Blackfoot River