Codding Reservoir Reservoir Report

Last Updated: December 5, 2025

Codding Reservoir, located in Mendocino, California, is a privately owned water resource with a primary purpose of recreation and water supply.


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Summary

This Earth-type dam stands at a height of 35.5 feet and has a maximum storage capacity of 72.8 acre-feet. Managed by the Department of Water Resources and regulated by the Safety of Dams division, Codding Reservoir plays a crucial role in the region's water management efforts.

Even though the dam has a low hazard potential, it is regularly inspected and maintained to ensure its structural integrity and overall safety. The last inspection in January 2020 deemed the dam to be in fair condition. With a designated inspection frequency of 1, the reservoir is equipped to handle emergencies with a preparedness plan in place. While there are no associated inundation maps or risk assessment data available, the reservoir continues to serve as a reliable water source for the community.

Despite its modest size, Codding Reservoir is a vital component of Mendocino's water infrastructure, providing a dependable water supply and recreational opportunities for residents. With its strategic location and efficient management, the reservoir remains a valuable asset in the region's efforts to sustainably manage water resources and adapt to changing climate conditions.

Dam Length

250

Dam Height

35.5

River Or Stream

unnamed

Primary Dam Type

Earth

Hydraulic Height

29.1

Nid Storage

72.8

Hazard Potential

Low

Nid Height

36
       
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.