Northwestern California Tribal Territories Herbicide Monitoring Project

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Klamath River at Horse Creek Bridge

In northwestern California, the tribal people have voiced concern over the use of reforestation herbicides on private forest lands, in addition to pesticide use in agricultural valleys which lie adjacent to tribal territories. Residents in these forest communities, who rely on plants, animals, water and other natural resources, have expressed concern about the presence of pesticide residues.

The tribes, particularly the Yurok, Hupa and Karuk, have requested that the California Department of Pesticide Regulation (DPR) and the U.S. Environmental Protection Agency (EPA) Office of Pesticide Programs monitor surface waters, plants and other natural resources for herbicides and other pesticide residues from their uses in reforestation and agriculture practices in that region.

The following are documents and reports on this project:



For content questions, contact:
Kean Goh
Phone: (916) 324-4072
E-mail: Kean.Goh@cdpr.ca.gov