San Vicente Res Nr Lakeside Ca Reservoir Report

Last Updated: December 5, 2025

San Vicente Reservoir is located in Lakeside, California, and was constructed in 1943 to provide drinking water for the city of San Diego.


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Summary

It has a capacity of 242,000 acre-feet and is a key component of the region's water supply system. The reservoir is fed by the San Vicente Creek and the Santa Maria River, with surface water primarily provided by the Colorado River via the Colorado River Aqueduct. It also receives snowpack runoff from the Cuyamaca Mountains. The reservoir is used for water supply, hydroelectric power generation, and recreational activities such as boating and fishing. It also supports agricultural uses in the surrounding areas through irrigation. In recent years, the reservoir has been expanded and modernized to improve its water storage capabilities and earthquake resistance.

Reservoir Details

Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft 24hr Change 0.0%
Percent of Normal 102%
Minimum 587.95 ft
2009-10-12
Maximum 750.46 ft
2024-05-07
Average 665 ft
Dam_Height 338
Hydraulic_Height 324.5
Drainage_Area 74.2
Year_Completed 1943
Nid_Storage 245000
River_Or_Stream San Vicente Creek
Surface_Area 1675
Hazard_Potential High
Dam_Length 1425
Primary_Dam_Type Roller-Compacted Concrete
Nid_Height 338
       
Seasonal Comparison
Reservoir Storage, Acre-Ft Levels
Lake Or Reservoir Water Surface Elevation Above Ngvd 1929, Ft Levels
Dcp Battery Voltage, V Levels

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.