San Gregorio Environmental Resource Center

San Gregorio Environmental Resource Center

San Gregorio Environmental Resource Center

Mission

Founded in 1988, our mission is to preserve and protect habitat for endangered species of the Santa Cruz Mountain bioregion, focusing on the San Gregorio (SG) Watershed and San Mateo County coast.

Our activities include creek water quality monitoring; field trips for Pescadero, La Honda, & Kings Mountain elementary school students; restoring habitat; sponsoring Coastal Cleanup Days at our Adopt-A-Beach site, SG State Beach; and cleaning 8 miles of Hwy 84 from SG Beach to La Honda as part of the Adopt-A-Highway program. We work closely with the community and other groups to share information and resources.

Upcoming Events

Coastside Gives 2026

  • April 1 - Start of Early Giving
  • May 7 - Giving Day

2026 Beach Cleanups

  • April 25 - Earth Day Beach Cleanup and Celebration
  • July 25 - SGERC's Adopt-A-Beach Cleanup
  • September 13 - International Coastal Cleanup Day

Gallery

Educational sign we sponsored at San Gregorio State Beach, depicting the lagoon's roll in the lives of steelhead trout and coho salmon.
La Honda Creek at Play Bowl during dry season with low flow and shallow water.
The distinctive multi-trunk tree on the bank of the San Gregorio Creek at Stage Road serves as a reference point for stream monitoring photos.
Frenzied flock of sea birds in the park at San Gregorio State Beach, facing west towards the ocean.
Breach in the lagoon at San Gregorio State Beach at low tide.
Flock of sea birds at the San Gregorio Creek lagoon.
Flock of sea birds at the San Gregorio Creek lagoon.
Sea bird at the San Gregorio Creek lagoon.
The breach in the lagoon at San Gregorio State Beach can occur at a different area of the beach each year.
Narrower breach in the lagoon at San Gregorio State Beach.
Breach in the lagoon at San Gregorio State Beach.
San Gregorio Creek lagoon at San Gregorio State Beach, after the lagoon breached.
San Gregorio Creek at Stage Road during wet season, with deep water and high flow rate.
San Gregorio Creek at Stage Road during wet season.
La Honda Creek at Play Bowl during dry season with logs slightly obstructing flow.
San Gregorio Creek at Stage Road with a calm, moderate flow rate.
Breaches in the lagoon at San Gregorio State Beach can look very different from year to year.