Join the San Mateo RCD for the first big rain of the year! You can help ensure clean creeks, beaches, and oceans with a one-day commitment to our “First Flush” program!

The RCD is seeking adventurous volunteers to be scientists for the day and help us collect water samples and record data at sites from Pacifica to Half Moon Bay. The samples will be evaluated for bacteria, metals, and nutrients, which negatively impact humans and wildlife. 

Volunteer training will be held on Wednesday October 6th, 2021 at 6:30pm. To register for the event, click on the link below:

Questions? Contact Nicole Schmidt at or 650.712.7765 x 112.