Humboldt Bay is big – 16,000 acres. The bay’s port at Eureka is the only protected deep water harbor between San Francisco and Seattle, so Humboldt Bay is a pretty important place from both an economic and ecology perspective. If you visit Humboldt Bay today, you’ll find three distinct zones: South, North and Central.
The North and South consist of long barrier sand spits barely connected to the mainland. The Central section is the protected harbor, divided between mudflats teeming with wildlife and the City of Eureka, Humboldt County seat. Most of the central bay is private property. It’s the two spits that are the most accessible to the public as recreation areas, thanks to access roads the Corps of Engineers put it when they built a jetty at the end of each spit in 1890. The jetties were needed to stabilize the harbor entrance, which until then involved a risky transit over ever-changing sandbars.
