Cedar Springs Reservoir Report

Last Updated: December 5, 2025

Cedar Springs, located in San Bernardino, California, is a state-regulated dam built in 1971 with a primary purpose of water supply.


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Summary

With a height of 249 feet and a storage capacity of 75,000 acre-feet, this earth dam on the Mojave River plays a crucial role in water management in the region. Cedar Springs also serves for hydroelectric power generation, recreation, and flood control, making it a versatile and significant infrastructure.

Managed by the California Department of Water Resources (DWR), Cedar Springs is subject to regular state inspections and enforcement to ensure its safety and functionality. The dam has a high hazard potential, indicating the consequences of a potential failure could be significant. Despite its age, the risk assessment for Cedar Springs is moderate, with ongoing risk management measures in place to mitigate any potential threats to the surrounding communities.

As climate change impacts water resources across California, Cedar Springs stands as a key asset in ensuring reliable water supply and flood protection for the region. With its strategic location and multi-purpose design, this dam continues to play a crucial role in water management efforts, highlighting the importance of sustainable infrastructure in the face of changing climate conditions.

Year Completed

1971

Dam Length

2230

Dam Height

249

River Or Stream

Mojave River

Primary Dam Type

Earth

Surface Area

980

Hydraulic Height

190

Drainage Area

34

Nid Storage

75000

Structural Height

249

Hazard Potential

High

Foundations

Rock

Nid Height

249
       
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.