Sea Level Rise

According to the latest projections, sea level in the Humboldt Bay area will rise 1 foot by 2030, 2 feet by 2050, and 3 feet by 2060. The primary impacts from sea level rise are increases in flooding and erosion. Sea level rise will expand the area vulnerable to flooding during major storms, as well as in the rare but catastrophic event of a major tsunami.

The term 100-year flood is used as a standard for planning, insurance, and environmental analysis. People, infrastructure, and property are already located in areas vulnerable to flooding from a 100-year event. Sea level rise will cause more frequent—and more damaging—floods to those already at risk and will increase the size of the coastal floodplain, placing new areas at risk to flooding.

Humboldt Bay King Tide Photo Initiative 2016-17

The highest tides this winter - known as King Tides - will occur on Oct. 17, Nov. 17, Dec. 13-14, Jan. 11-12.

To help document this year’s King Tide, All you need is a camera or a smartphone. Submit photos to This email address is being protected from spambots. You need JavaScript enabled to view it..

Be very cautious of rising water, eroding shoreline, flooded roadways, and high winds during any extreme high tide events.

Photo by Saroj Gilbert, South I Street in Arcata, 10-28-15.

2013-14 Humboldt Bay King Tides Photo album

We've launched our 2013-14 Humboldt Bay King Tides Photo album featuring nearly 100 photos taken by volunteer and staff photographers!

Above: Eureka Slough and Jacobs Avenue businesses, Eureka. Photo by J. Kalt.

New Year’s Day King Tide On Liscom Slough

1/2/13

JACKSON RANCH ROAD – Skunky LaRue was nowhere to be found during today’s King Tide along Liscom Slough, but Ted Halstead and Third District Supervisor Mark Lovelace went kayaking there anyway.

Photos by Ted, Mark and Kevin L. Hoover.

Click HERE to see the photo gallery.