Slab Creek Reservoir Report

Last Updated: December 5, 2025

Slab Creek, located in El Dorado County, California, is a significant hydroelectric dam with a height of 250 feet and a storage capacity of 16,000 acre-feet.


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Summary

Constructed in 1967, this concrete arch dam plays a crucial role in regulating water resources and generating hydroelectric power in the region. With a maximum discharge of 127,000 cubic feet per second, Slab Creek is a key component of the water infrastructure, serving as a vital resource for the surrounding communities.

Managed by the Federal Energy Regulatory Commission, Slab Creek is subject to regular inspections and state regulations to ensure its safety and proper functioning. The dam's high hazard potential highlights the importance of effective risk management measures and emergency preparedness. Despite its remote location in Coloma and its serene surroundings, Slab Creek serves as a critical piece of infrastructure that contributes to water resource management and climate resilience efforts in California.

Overall, Slab Creek stands as a testament to the intersection of water resources, energy production, and environmental stewardship. As a key player in the state's hydroelectric network, this dam underscores the importance of sustainable infrastructure development and proactive risk mitigation strategies in the face of changing climate patterns and increasing water demands. By harnessing the power of Slab Creek, authorities can continue to meet the region's energy needs while safeguarding water resources for future generations.

Year Completed

1967

Dam Length

817

Dam Height

250

River Or Stream

Slab Creek

Primary Dam Type

Concrete

Surface Area

249

Hydraulic Height

230

Drainage Area

493

Nid Storage

16000

Structural Height

250

Hazard Potential

High

Nid Height

250
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No 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

High
Dams 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.