Wuest Reservoir Report

Last Updated: December 27, 2025

Wuest, located in Jacumba, California, is a privately owned dam with a primary purpose of water supply.


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Summary

Completed in 1928, this earth dam stands at a height of 50 feet and has a storage capacity of 280 acre-feet. Situated on Mc Cain Creek, Wuest serves not only as a water resource but also offers recreational opportunities. With a drainage area of 31.8 square miles and a maximum discharge of 1600 cubic feet per second, this dam plays a crucial role in managing water resources in the region.

Managed by the California state agency, DWR, Safety of Dams, Wuest is subject to state regulations, inspections, and enforcement to ensure its safety and functionality. With a low hazard potential and a satisfactory condition assessment as of September 2017, Wuest is considered to be in good standing. However, with the last inspection conducted in November 2019, regular monitoring and maintenance are essential to uphold its safety standards and operational efficiency. Additionally, the dam has not experienced any modifications in recent years, highlighting its stable and reliable infrastructure.

As an integral part of the water supply system in San Diego County, Wuest offers a glimpse into the intersection of water resource management and climate resilience. With its historical significance and ongoing role in sustaining water availability for the region, Wuest exemplifies the importance of efficient dam infrastructure in addressing the challenges posed by changing climate patterns and growing water demands. As enthusiasts of water resources and climate adaptation, exploring the intricacies of dams like Wuest provides valuable insights into the complex dynamics of water management in a rapidly changing world.

Year Completed

1928

Dam Length

350

Dam Height

50

River Or Stream

Mc Cain Creek

Primary Dam Type

Earth

Surface Area

30

Hydraulic Height

42.5

Drainage Area

31.8

Nid Storage

280

Hazard Potential

Low

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.
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