Download North Coast Watersheds Mapping Project Data

During the early 1980s, under the provisions of Section 208 of the Federal Water Pollution Control Act, the Environmental Protection Agency (EPA) funded a number of water protection projects that involved the geologic mapping of sensitive watersheds along California's north coast. Since then, the California Department of Conservation, California Geological Survey (CGS) has been contracted by the California Department of Forestry and Fire Protection (CDF) to produce maps for parts of Mendocino, Humboldt, and Del Norte counties, and other selected watersheds throughout the state (see Watersheds Index Map).

Maps (PDF)

Request all NCWMP PDFs and GIS data as one download (284 megabyte Zip file). Or, use the links below to request individual maps.

Metadata for NCWMP Geology maps

Metadata for NCWMP Geomorphic Features maps

GIS Data