Lake Lucerne, located in San Mateo, California, is a privately owned water supply reservoir with a capacity of 455 acre-feet. Built in 1923, this earth-type dam stands at a height of 21 feet and has a hydraulic height of 15.7 feet. With a surface area of 45 acres and a drainage area of 4.69 square miles, Lake Lucerne plays a crucial role in supplying water for irrigation and domestic use in the region.

Managed by the California Department of Water Resources, Lake Lucerne is regulated, inspected, and enforced for safety by state authorities. Despite its low hazard potential, the dam's condition was last assessed as satisfactory in September 2017. The reservoir's normal storage capacity, spillway type, and maximum discharge are not specified in the data, but its primary purpose of water supply underscores its importance for the surrounding community.

Overlooking the Pacific Ocean, Lake Lucerne serves as a vital water resource amidst California's changing climate. As climate enthusiasts and water conservation advocates continue to monitor and steward the region's water sources, Lake Lucerne stands as a testament to the intersection of human engineering and environmental sustainability in the face of ongoing challenges.