The Van Duzen River is a river on the north coast of California. It is a major tributary of the Eel River and drains 429 square miles (1,110 km2), mostly in Humboldt County, with a small portion in Trinity County.
The river travels 63 miles (101 km) from its headwaters on the west side of the North Coast Range to its confluence with the Eel River, about 14 miles (23 km) upstream from the Pacific Ocean and 17 miles (27 km) south of Eureka, California. The river has two forks in its upper reaches. The North Fork travels northwest until it reaches the small town of Dinsmore, where it starts flowing west. The Little Van Duzen, which also flows northwest, joins the North Fork a few miles later. The river flows roughly west from then on. It meets its largest tributary, Yaeger Creek, about 5 miles (8.0 km) before it reaches the Eel River.
