About Us

The California King Tides Initiative was launched in the winter of 2010/2011 by a partnership of state and federal agencies and non-profit organizations. As a successful pilot effort, the King Tides Initiative created a rich and diverse archive of photographs that highlight the changes in California’s shoreline communities and ecosystems.

The Initiative was inspired by similar projects across the globe, including Washington, Oregon, British Columbia and Australia. This Initiative is part of a network of local efforts, and is growing every day.

More importantly, this project isn’t about the organizers, it’s about you:  you taking pictures of your community and thinking about how sea level rise might affect your life.

Questions? Contact us at cakingtides@gmail.com

For media inquiries, contact Heidi Nutters at 650-291-6264 or heidin@sfsu.edu

Our Mission

The California King Tides Initiative seeks to engage citizens to photograph king tides, or the highest winter tides, along the entire California coast, including bay areas, in order to raise awareness about the impacts of flooding events and potential impacts of future sea-level rise. In addition, the campaign seeks to create a rich and diverse archive of easily accessible photographs that can be used to inspire action to reduce coastal hazards and impacts from sea-level rise.

California King Tides Initiative Organizing Partners

Organizing partners include state and federal agencies and non-profit partners. This group has been working together on the Initiative since winter 2010.  The contact person from each organization is listed in parentheses.

Bay Conservation and Development Commission (Maggie Wenger)

California Coastal Commission (Hilary Papendick)

California Coastkeeper Alliance (Sarah Aminzadeh)

Coravai (Marina Psaros)

Elkhorn Slough National Estuarine Research Reserve (Virginia Guhin)

Gulf of the Farrallones National Marine Sanctuary (Sara Hutto)

San Francisco Bay National Estuarine Research Reserve (Heidi Nutters)

Thank You Ocean (Miho Umezawa)

Tijuana River National Estuarine Research Reserve (Kristen Goodrich)

BCDC LogoGulf of the Farallones LogoCoastkeeperTiajuana NERR Coravai LogoSF Bay NERR LogoElkhorn SloughLogoTYO LogoCCC logo

Our supporters are helping get the word out about across the state. If your organization is interested in becoming a supporter, please email us at cakingtides@gmail.com.


MBNEP logo Blue





King Tide Initiatives across the globe

West Coast (US and Canada)

This initiative is part of a West Coast partnership with Washington State others in Oregon and British Columbia.

East Coast


There is also a similar effort underway in Australia entitled Witness King Tides.