The California King Tides Project help people visualize how sea level rise will impact their lives.  Via smartphones and social media, we invite you to document “king tides” – the highest high tides of today, which will be the average water levels of the future. Everyone is welcome to participate!

Our shores are constantly being altered by human and natural processes and projections indicate that sea level rise will exacerbate these changes.  King Tides images offer a living record of the changes to our coasts and shorelines and a glimpse of what our daily tides may look like in the future as a result of sea level rise.

New StoryMap!

We teamed up with our friends at NOAA’s Digital Coast to make this cool StoryMap, featuring King Tides projects from around the world.  Click here to check it out!


Featured Media – Thank you Ocean Report Features King Tides



2015/2016 King Tides Season

Dates for the 2015 / 2016 season will be here soon.  In the meantime, have a look at the peak times for select locations from February 2015.




North Spit, Humboldt Bay February 17, 9:56am 7.95 ft
February 18, 10:48am 8.06 ft
February 19, 11:40am 7.97 ft
Rincon Point, Pier 22 1/2, San Francisco February 17, 10:02am 7.09 ft
February 18, 10:54am 7.15 ft
February 19, 11:47am 7.03 ft
Redwood City February 17, 10:45am 9.19 ft
February 18, 11:38am 9.03 ft
February 19, 12:32pm 9.21 ft
Elkhorn Slough Railroad Bridge February 17, 9:07am 6.41 ft
February 18, 9:58am 6.45 ft
February 19, 10:49am 628 ft
Newport Bay Entrance, Corona del Mar February 17, 7:29am 6.36 ft
February 18, 8:15am 646 ft
February 19, 9:01am 6.31 ft