Sea Level Rise 

October is Sea Level Rise Awareness Month.

We have just completed the first phase of a public awareness campaign about current and potential effects of sea level rise in Arcata.  You may have noticed City staff on the Plaza during Farmer's Markets and Pastels on the Plaza, handing out information and inviting you to learn more and provide feedback at events we held on October 7th.

Sea level rise affects everyone in the City of Arcata! While significant effects may be seen 50 to 100 years from now, the City Council is considering now the policies they will put in place.  These policies directly affect:

  • Infrastructure - Roads, Electrical Stations, Wastewater Treatment, Water
  • Commercial and Industrial Properties
  • Residential Properties
  • Agricultural Land and Facilities
  • Recreation and Natural Habitat Areas

We encourage all citizens to become informed about the policy the Council is considering, and to weigh in on the discussion. Below you will find a draft of Sea Level Rise policies, and slideshow of maps that show what our tidelands looked like in 1870, a FEMA floodplain map, adaptation measures, and two maps showing the proposed protection zone.  Click on any of the maps for a PDF.


A very good way to stay informed is to sign up for eNotifications - see information below.

The League of Women Voters of Humboldt County is holding a meeting where you can find more information about Sea Level Rise.  On October 25th at 6:30 p.m. Dr. Diz Swift will present "Sea Level Rise: When and How Far?"  The event will be held at the Humboldt Bay Aquatic Center, 921 Waterfront Center in Eureka.  For complete information, go to the League's website calendar.  Information about Dr. Swift can be found at

General Sea Level Rise Presentation

10-07-17 Sea Level Rise Awareness Events - Pastels on the Plaza, Guided Trail Walk, Information and Feedback Session

David Loya Discusses SLR Strategies
David Loya Answers Questions
Citizens and City Staff on Trail Walk - Viewing Current & Future SLR Impacts
At Pastels on the Plaza
Mark Andre and Doby Class Discussing Sea Level Rise on Trail Walk
David Loya Provides SLR Information

Sign Up for eNotifications!

  • Go to our website's main page and click on the gear icon next to the search box
  • Select Notifications from the drop-down menu
  • Enter your email address and/or sign up for text messages, and click on Sea Level Rise Notifications
  • You'll receive a confirmation email - once you confirm, you'll be ready to go
  • You'll receive a confirmation email - once you confirm, you'll be ready to go

You can also find information on the City Calendar, and by press release.sign up

Information from previous Study Sessions with the City Council:

Select to see information presented at the December 16, 2016 Study Session.

Select to see information presented at the February 6, 2017 Study Session.