Crosby #3 Reservoir Report
Nearby: Crosby #4 J Galt #11
Last Updated: December 7, 2025
Crosby #3 is a private earth dam located in Rosebud, Montana, designed by the USDA NRCS for multiple purposes including fire protection, stock, and small fish pond.
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Summary
Completed in 1967, this dam stands at a height of 18 feet with a length of 225 feet, providing a storage capacity of 77 acre-feet. Situated on Stellar Creek, the dam serves as a vital resource for the surrounding area.
Despite its low hazard potential and moderate risk assessment, Crosby #3 is not currently rated for its condition. The dam's primary regulatory agency is the DNRC, with state jurisdiction and permitting in place. While the dam has not been modified in recent years, it remains subject to state inspections, enforcement, and emergency preparedness measures.
For water resource and climate enthusiasts, Crosby #3 offers an intriguing case study in dam infrastructure management in Montana. With its varied purposes and stable risk assessment, this private earth dam serves as a valuable asset for fire protection, livestock, and recreational activities in the region. Its location on Stellar Creek underscores the importance of sustainable water resource management in the face of changing climate patterns and increasing demands on freshwater supplies.
Year Completed |
1967 |
Dam Length |
225 |
Dam Height |
18 |
River Or Stream |
STELLAR CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Drainage Area |
1.25 |
Nid Storage |
77 |
Hazard Potential |
Low |
Nid Height |
18 |
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.
Crosby #3