Waldo #2 Reservoir Report
Nearby: Merlin Put It Together
Last Updated: December 5, 2025
Waldo #2 is a privately owned earth dam located in Garfield County, Montana, designed by the USDA NRCS for multiple purposes including fire protection, stock, and small fish pond.
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Summary
Completed in 1950, this dam stands at a height of 15 feet with a length of 500 feet, providing a storage capacity of 59 acre-feet for Lone Tree Creek. With a low hazard potential and moderate risk assessment, Waldo #2 is regulated by the Montana Department of Natural Resources and Conservation, ensuring regular inspections and enforcement to maintain its structural integrity.
Situated in the beautiful landscape of Jordan, Montana, Waldo #2 serves as a vital water resource for the surrounding area, contributing to the conservation of water for various purposes. Operated by the owner, this dam plays a crucial role in providing water for fire protection, livestock, and supporting a small fish pond ecosystem. With a spillway width of 100 feet and a maximum discharge of 500 cfs, Waldo #2 is equipped to handle fluctuations in water levels and ensure the safety of downstream areas during heavy rainfall events.
As a part of the Omaha District under the US Army Corps of Engineers, Waldo #2 exemplifies the importance of sustainable water management and the collaboration between federal, state, and private entities in ensuring the safety and reliability of water infrastructure. With a history dating back to 1950, this earth dam continues to play a significant role in water resource management, showcasing the importance of maintaining and monitoring dams for the benefit of local communities and the environment.
Year Completed |
1950 |
Dam Length |
500 |
Dam Height |
15 |
River Or Stream |
TR-LONE TREE CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
15 |
Drainage Area |
1.25 |
Nid Storage |
59 |
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.
Waldo #2