Where is Darlingtonia California found?

Darlingtonia californica, commonly called the cobra plant or cobra lily, is a carnivorous plant native to a narrow geographic region in Northern California and southern Oregon. Most populations are found in Northern California, from the south fork of the Coquille River in Coos County, Oregon, south to the Eel River in Mendocino County, California, occurring mostly within Del Norte and Humboldt counties.