Santa Maria Creek

photo banner of different intertidal species

Santa Maria Creek Long-Term trends

Santa Maria Creek Biodiversity Survey findings

Santa Maria Creek is located in the North Central Coast region of California, within the Greater Farallones National Marine Sanctuary and Point Reyes National Seashore.

overview of research site

The site is located along the shores of Drake’s Bay approximately ¼ mile southeast of the mouth of Santa Maria Creek. Point Reyes Peninsula offers this site some protection from the predominantly northwesterly winds and seas. This gently sloping site consists of moderately uneven terrain and is on a sedimentary rock platform which has numerous crevices and gullies. This site receives low visitation by tidepoolers

map of research site

Long-Term Monitoring Surveys at Santa Maria Creek were established in 2006, and are done by the San Francisco Bay Area Network of the National Park Service’s Inventory and Monitoring Program. Long-Term MARINe surveys currently target the following species: Mytilus (California Mussel), Pelvetiopsis (Dwarf Rockweed), and Pisaster (Ochre Star). In addition, motile invertebrates and mussel size structure are monitored at this site. For more information see San Francisco Bay Area National Parks intertidal monitoring protocols and Long-Term trends at this site.

closeup of research site

Biodiversity Surveys were done in 2002, 2005, 2010, 2013, 2018 and 2021. The Biodiversity Survey grid encompasses two sections that are approximately 4 meters (along shore) x 40 meters (seaward), and 21 meters (along shore) x 33 meters (seaward). For more information see the Biodiversity Survey findings at this site.

For more information about Santa Maria Creek, please contact Ben Becker (Ben_Becker@nps.gov).

See Also

San Francisco Bay Area Network

Last modified: Aug 08, 2025