Publication Date
1-1-2017
Abstract
Land subsidence in and around Humboldt Bay, California contributes to sea-level rise up to 2-3 times greater than anywhere else in California. Sea-level observations and highway level surveys confirm that land is subsiding in Humboldt Bay, in contrast to Crescent City where the land is rising. Rates of sea-level rise are 5.84 mm/yr in South Humboldt Bay (Hookton Slough), 3.76 mm/yr at Fields Landing, 4.61 mm/yr at the North Spit, 2.53 mm/yr at Samoa, and 3.39 mm/yr in Arcata Bay (Mad River Slough). Rates of land subsidence are -3.56 mm/yr in South Humboldt Bay (Hookton Slough), -1.48 mm/yr at Fields Landing, -2.33 mm/yr at the North Spit, -0.25 mm/yr at Samoa, and -1.11 mm/yr in Arcata Bay (Mad River Slough).
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