Camanche Dike No. 3 Reservoir Report

Last Updated: December 5, 2025

Camanche Dike No.


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Summary

3, located in Clements, California, is a vital water resource infrastructure owned by a public utility. This earth-type dam on the Mokelumne River serves multiple purposes including water supply, flood risk reduction, hydroelectric power generation, recreation, and support for fish and wildlife habitats. With a height of 50 feet and a length of 4500 feet, the dam has a storage capacity of 417,000 acre-feet and covers a surface area of 7600 acres.

Managed by the Federal Energy Regulatory Commission, Camanche Dike No. 3 is regulated by the State of California's Department of Water Resources for safety and inspection. Despite its high hazard potential, the condition assessment for the dam is currently not available. The Emergency Action Plan (EAP) for the structure was last revised in March 2021, indicating a commitment to ensuring preparedness and safety measures in case of emergencies. With a risk assessment rating of "High (2)", ongoing risk management measures are crucial for the continued safety and stability of this important water infrastructure.

Dam Length

4500

Dam Height

50

River Or Stream

Mokelumne River

Primary Dam Type

Earth

Surface Area

7600

Nid Storage

417000

Hazard Potential

High

Foundations

Rock

Nid Height

50
       
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.