Imco Tailings Dam Reservoir Report
Last Updated: December 12, 2025
Imco Tailings Dam, also known as Mountain Springs Tailings Dam, is a privately owned structure located in Battle Mountain, Nevada.
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Summary
Constructed in 1975 by M-I LLC, this earth dam stands at a height of 70 feet, with a hydraulic height of 60 feet and a structural height of 75 feet. The primary purpose of this dam is to contain tailings, with a storage capacity of 220 acre-feet and a normal storage level of 80 acre-feet.
With a surface area of 23 acres and a drainage area of 0.1 square miles, Imco Tailings Dam is regulated by the Nevada Department of Water Resources and undergoes regular inspections to ensure its structural integrity. The dam has a low hazard potential and is currently assessed to be in fair condition. In the event of an emergency, there is an uncontrolled spillway with a width of 100 feet and other controlled outlets for water release. Overall, Imco Tailings Dam plays a crucial role in managing water resources in the region and is a key component of the local infrastructure for climate enthusiasts and researchers interested in water management and climate adaptation.
Years Modified |
1978 - Structural |
Year Completed |
1975 |
Dam Length |
320 |
Dam Height |
70 |
River Or Stream |
REESE RIVER-OS |
Primary Dam Type |
Earth |
Surface Area |
23 |
Hydraulic Height |
60 |
Drainage Area |
0.1 |
Nid Storage |
220 |
Structural Height |
75 |
Outlet Gates |
Other Controlled - 1 |
Hazard Potential |
Low |
Nid Height |
75 |
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.
Imco Tailings Dam