Crazy Creek Reservoir Reservoir Report
Nearby: Petticoat Junction Stone Ranch Dam
Last Updated: December 5, 2025
Crazy Creek Reservoir, located in Fergus County, Montana, is a privately owned irrigation reservoir completed in 1946.
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Summary
With a dam height of 30 feet and a storage capacity of 92 acre-feet, the reservoir primarily serves the purpose of irrigation for the surrounding area. The reservoir is situated on the Warm Spring Creek, providing a vital water source for agricultural activities in the region.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Crazy Creek Reservoir is regulated, inspected, and enforced by the state agency to ensure its safety and compliance with regulations. The dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. While there are no associated structures or spillways, the reservoir plays a crucial role in water resource management and supports the local economy through agricultural irrigation.
Located in the picturesque city of Hilger, Crazy Creek Reservoir offers a serene setting for water resource and climate enthusiasts to appreciate the importance of sustainable water management practices. With its historical significance dating back to the mid-20th century, the reservoir serves as a reminder of the essential role that water infrastructure plays in supporting agricultural activities and preserving natural resources in the region.
Year Completed |
1946 |
Dam Length |
100 |
Dam Height |
30 |
River Or Stream |
TR-WARM SPRING CREEK |
Primary Dam Type |
Earth |
Hydraulic Height |
30 |
Nid Storage |
92 |
Hazard Potential |
Low |
Nid Height |
30 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Judith River Nr Mouth
|
368cfs |
Missouri River Near Landusky Mt
|
9100cfs |
Musselshell River At Harlowton Mt
|
85cfs |
Musselshell River Nr Martinsdale
|
61cfs |
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.
Crazy Creek Reservoir