California King Tides Project. Snap the Shore, See the Future. A family watches the king tides at San Francisco's Pier 14

California King Tides Project

How to Participate  |   King Tides Photo Gallery  |   About King Tides  |   Educator Resources

King Tides arrive:

NOVEMBER 15-16, 2020
DECEMBER 13-15, 2020
North of Point Conception ONLY: JANUARY 11-12, 2021 *

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The California King Tides Project helps us visualize future sea level by observing the highest high tides of today.

You can help by taking and sharing photos of the shoreline during King Tides to create a record of changes to our coast and estuaries. Find out what time and how high the King Tides will be near you. Learn how to participate by uploading your photos via a web browser or with a free app. Your photos will be added to a map of this season's King Tides photos. As always, please be cautious and respect the power of the ocean, and don't disturb shorebirds that may be much farther upland than usual.

Skip directly to the photo upload form.

See the photos from this season's King Tides.

Download a poster for Northern California or Southern California King Tides.


There is an additional, particularly high tide north of Point Conception (southwest Santa Barbara County) due to a combination of astronomical influences such as the relative tilt of the Earth's rotation with respect to the Sun and seasonal influences on water level such as temperature and wind that differ in Southern California as compared to Northern California over the course of the year.

Contact the California King Tides Project at