Camp Detention Dam Reservoir Report
Last Updated: December 21, 2025
Camp Detention Dam, located in Nashua, Montana, is a federal-owned structure managed by the Bureau of Land Management.
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Summary
Built in 1954, this gravity dam stands at a structural height of 21 feet, with a hydraulic height of 16 feet, serving primarily for flood risk reduction along Willow Creek and the Milk River. With a storage capacity of 375 acre-feet and a surface area of 62.39 acres, Camp Detention Dam plays a crucial role in mitigating potential flooding in the area.
Despite its low hazard potential, Camp Detention Dam's condition assessment is marked as unsatisfactory, prompting a moderate risk assessment rating. The dam lacks an Emergency Action Plan (EAP) and updated emergency contacts, raising concerns about its readiness in case of an unexpected event. Regular inspections are conducted every five years to ensure the dam's structural integrity, although further risk management measures are yet to be outlined to address the existing safety concerns.
As a key infrastructure for flood control in Valley County, Montana, Camp Detention Dam underscores the importance of proactive maintenance and risk mitigation strategies to safeguard nearby communities and the environment. With its historical significance and ongoing operational challenges, the dam serves as a reminder of the critical role water resource management plays in protecting lives and property in the face of changing climatic conditions.
Year Completed |
1954 |
Dam Length |
1475 |
River Or Stream |
WILLOW CK./MILK RIVER |
Primary Dam Type |
Gravity |
Surface Area |
62.39 |
Hydraulic Height |
16 |
Drainage Area |
20 |
Nid Storage |
375 |
Structural Height |
21 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
Nid Height |
21 |
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.
Camp Detention Dam