This polygon shapefile depicts land use for the nine county San Francisco Bay Area Region, California, originlly derived from the California Department of Conservation Farmland Mapping and Monitoring Program data. The counties are merged into one dataset. Attributes are as follows: Prime Farmland (P), Farmland of Statewide Importance (S), Unique Farmland (U), Farmland of Local Importance (L), Grazing Land (G), Urban and Built Up Land (D), Other Land (X) and Water (W). This is a very useful dataset for mapping grazing lands, urbanization and cultivated agriculture. This dataset was developed/compiled for use in the San Francisco Bay Area Upland Habitat Goals Project, a Project used to identify a Conservation Lands Network (CLN) for biodiversity preservation to inform conservation investments and lasting cooperative conservation partnerships. The Conservation Lands Network GIS Database is the primary output of the Project. The data depicts the spatially explicit CLN that is recommended for the nine county San Francisco Bay Area Region, California.