11/28/12


This year America watched sea levels rise and the ocean flood cities across the east coast in late October. Humboldt County faces a similar threat.
 
Mid-November to early December is when flood risk is the highest. A storm during the high tides of that time can overtake the dikes around Humboldt Bay, flood the area and cost the county millions of dollars to recover.

10/10/12

The county is looking at ways to protect coastal com­munities on Humboldt Bay threatened by rising sea levels and aging dikes. The Board of Supervisors on Tuesday voted unanimously to sup­port a recent application for a $250,000 Coastal Conservan­cy grant that would allow nonprofit Coastal Ecosys­tems Institute of Northern California to adapt planning and technical studies associ­ated with sea level rise in Humboldt Bay.

Aldaron Laird of Trinity Associates said at Tuesday’s meeting that the first phase of the project — the first com­prehensive mapping of Humboldt Bay, funded by the Coastal Conservancy — was complete. Seventy-five per­cent of Humboldt Bay’s 102 ­mile shoreline is artificial, Laird said, meaning it needs maintenance.

Laird said Humboldt Bay has the highest rate of sea ­level rise on the West Coast and showed examples of crumbling dikes and shore­line areas that already flood yearly.

Harbor district Director of Conservation Division Dan Berman said it was an important issue for the dis­trict, adding that even if sea level rise goes more slowly than expected, it’s already a problem on the bay.

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Thousands of acres of former tidal wetlands currently at or below sea level around Humboldt Bay—including most of Manila, Samoa, Fairhaven, some residential and commercial areas of Eureka and Arcata, and many agricultural lands near the bay—are at risk of increased flooding in the coming years.


6/22/12

As the world continues to warm from climate change, most of California -- including San Francisco Bay -- will see a greater rise in sea level than other parts of the planet, according to a prominent national study released Friday.

The report, from the National Academy of Sciences, found that the impacts of melting ice and warming, expanding oceans will hit California harder because most of the state's coastline is slowly sinking due to geological forces.

Ocean levels south of Humboldt County will rise up to 1 foot in the next 20 years, 2 feet by 2050, and up to 5 feet by 2100, the study showed.

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