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Crystal Springs Reservoir

Northern California Lakes atop the San Andreas Fault

Photos by Leo Escala on Unsplash

About

Crystal Springs Reservoir is a pair of artificial lakes located in the northern Santa Cruz Mountains of San Mateo County, California operated by the San Francisco Public Utilities Commission for water supply to the San Francisco peninsula. The reservoirs are located in the rift valley created by the San Andreas Fault just to the west of the cities of San Mateo and Hillsborough, and I-280. The lakes are part of the San Mateo Creek watershed. Crystal Springs Regional Trail runs along the reservoir.

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Photos from Unsplash, Wikipedia and Wikimedia Commons (CC BY-SA); facts from Wikipedia; maps © OpenStreetMap contributors, weather from Open-Meteo. Huginn’s tips are AI-written — check prices, hours and entry rules before you go.