Below are links to available on-line information related to the Tomales Bay watershed.  The pages at the links below are maintained by others, and may change over time.

Please Contact Us to report broken or missing links.

See Who We Are for a list of our Members and links to their websites.

Real-time Streamflow and Rainfall Information

San Geronimo Creek Raingauge at Lagunitas

Lagunitas Creek at Samuel P. Taylor State Park (USGS)

Lagunitas Creek near Point Reyes Station (USGS)

Walker Creek (USGS)

24-hour Rainfall Totals for Marin County –

Rainfall data from the Barnaby Gauge –


MarinMap – A Geographic Information System for Marin County


Research Links coming soon.


Students and Teachers Restoring A Watershed (STRAW) – A project of Point Blue Conservation Science, STRAW engages local teachers and their students in hands-on habitat restoration or conservation projects.

UC Cooperative Extension Farm and Ranch Stewardship – California farmers and ranchers are vested in the stewardship of the natural resources on their lands because their sustainability is integral to the vitality of the farm and ranchPhotos Photos by Richard Blair & Kathleen Goodwin/EnvironmentalEye.org