Pabco Dam Tailings Pond 11 Reservoir Report
Last Updated: December 16, 2025
Pabco Dam Tailings Pond 11, located in Clark, Nevada, is a private earth dam primarily used for tailings storage.
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Summary
Constructed in 2010 by NINYO & MOORE, this dam stands at a height of 47 feet with a hydraulic height of 44 feet, serving the purpose of storing tailings from nearby mining operations. The dam has a storage capacity of 450 acre-feet and covers a surface area of 13.2 acres, with a drainage area of 0.1 acres.
Despite being classified as having a low hazard potential, the dam's condition assessment is rated as poor, indicating a need for maintenance and potential repair. The last inspection in April 2018 revealed this poor condition, prompting a reevaluation of the dam's risk assessment, which currently stands at a moderate level. With an uncontrolled spillway and only one outlet gate for controlled release, the dam presents some vulnerabilities that require careful monitoring and management to ensure the safety of the surrounding area, which includes the Colorado River.
As water resource and climate enthusiasts, it is crucial to stay informed about the state of infrastructure like Pabco Dam Tailings Pond 11 to understand the potential risks and challenges associated with managing water resources in environmentally sensitive areas. By keeping a close eye on the dam's condition, maintenance efforts, and risk assessment, stakeholders can work together to ensure the safety and sustainability of this critical water storage facility for both current and future generations.
Year Completed |
2010 |
Dam Length |
2338 |
Dam Height |
47 |
River Or Stream |
COLORADO RIVER-TR |
Primary Dam Type |
Earth |
Surface Area |
13.2 |
Hydraulic Height |
44 |
Drainage Area |
0.1 |
Nid Storage |
450 |
Structural Height |
47 |
Outlet Gates |
Other Controlled - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
47 |
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.
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Pabco Dam Tailings Pond 11