Crystal Springs Reservoir — Rockhounding in San Mateo County, California

Crystal Springs Reservoir is a mapped rockhounding spot in San Mateo County, California. Reported finds include chromite. Below: coordinates, access notes, nearby spots, and trip-planning links.

Quick details

Access: Public area
County: San Mateo County
State: California
Nearest road: Sawyer Camp Trail
Postcode: 94030
Coordinates: 37.54739, -122.38739

Land & collecting status

Generally open to casual rockhounding

Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig.

Public-land rules vary by agency, season, and field office. The RockHoundR app pulls live BLM, USFS, NPS, and tribal overlays so you can see exactly which agency manages the ground at this spot.

Found at Crystal Springs Reservoir

Each chip links to all spots in the U.S. that produce that material.

Chromite

Nearby rockhounding spots

Other rockhounding spots within driving distance of Crystal Springs Reservoir.

Crystal Springs Reservoir FAQ

Where is Crystal Springs Reservoir?+

Crystal Springs Reservoir is in San Mateo County, California, at 37.54739, -122.38739. Nearest road: Sawyer Camp Trail.

What rocks and minerals can you find at Crystal Springs Reservoir?+

Crystal Springs Reservoir is reported to produce Chromite.

Is collecting allowed at Crystal Springs Reservoir?+

Generally open to casual rockhounding. Most public-tagged spots sit on BLM, U.S. Forest Service, or other federal land where reasonable hand collecting of common rocks and minerals is allowed. Confirm posted rules and active mining claims before you dig. Always confirm current rules with the managing agency before a trip.

How do I get to Crystal Springs Reservoir?+

Open the directions link to navigate to 37.54739, -122.38739 in Google Maps. The nearest road is Sawyer Camp Trail.

More rockhounding in California

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Open Crystal Springs Reservoir on the map

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