Lake Lucerne

Lake Lucerne is an earth dam located in San Mateo County, California, built in 1923. It carries a Low hazard potential classification and has a satisfactory condition assessment.

About Lake Lucerne

The primary purpose of Lake Lucerne is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by Lake Lucerne Mutual Water Company (private). It impounds the Ar De Los Frijoles.

The dam stands 21 feet tall and stretches 346 feet across, creates a reservoir covering 45 acres, has a maximum storage capacity of 455 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1923, the structure is over a century old.

This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 03/24/2025.

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Low HazardSatisfactory ConditionEmergency Action Plan: No

Location

StateCalifornia
CountySan Mateo
River/StreamAr De Los Frijoles
Coordinates37.22430, -122.40570

Physical Characteristics

Dam TypeEarth
NID Height21 ft
Dam Height21 ft
Dam Length346 ft
Year Completed1923 (103 years old)

Storage & Hydraulics

NID Storage455 acre-ft
Max Storage455 acre-ft
Surface Area45 acres
Drainage Area4 sq mi

Ownership & Safety

PurposeWater Supply
OwnerLake Lucerne Mutual Water Company
Owner TypePrivate
Hazard ClassificationLow
Condition AssessmentSatisfactory
Last Inspection03/24/2025
Emergency Action PlanNo

Identifiers

NID IDCA00664
Federal IDCA00664
More InfoState Dam Safety Program

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