Clover Drop Dam Reservoir Report
Last Updated: January 2, 2026
Clover Drop Dam, located in Valley County, Montana, is a gravity dam built by the Bureau of Land Management.
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Summary
With a structural height of 15 feet and a hydraulic height of 10 feet, the dam stands as a vital water resource structure in the region. It has a storage capacity of 88.81 acre-feet, providing essential water storage for the surrounding area.
The dam is classified as low hazard potential and is in satisfactory condition, as per the last inspection in September 2018. It serves the primary purpose of water storage and is associated with an intermittent river or stream. The dam's spillway type is uncontrolled, with a spillway width of 2 feet. Despite not being under state jurisdiction or regulation, Clover Drop Dam plays a crucial role in managing water resources in the area.
Clover Drop Dam's presence underscores the Bureau of Land Management's commitment to water resource management and infrastructure development. With its moderate risk assessment rating, the dam highlights the importance of ongoing monitoring and maintenance to ensure the safety and efficiency of water storage and distribution systems in the region. For water resource and climate enthusiasts, Clover Drop Dam represents a significant piece of infrastructure that contributes to the sustainable management of water in Montana.
Dam Length |
760 |
River Or Stream |
INTERMITTENT |
Primary Dam Type |
Gravity |
Surface Area |
13.41 |
Hydraulic Height |
10 |
Drainage Area |
0.7 |
Nid Storage |
88.81 |
Structural Height |
15 |
Hazard Potential |
Low |
Foundations |
Unlisted/Unknown |
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.
Clover Drop Dam