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Sonoma County Digital Map


The University Library has gathered digital images of geologic and topographic maps for easy access by students and faculty engaged in environmental and natural science studies. The geographic area covered by this website includes the counties of Sonoma, Lake, Marin, Mendocino, Napa, and Solano. These counties are part of the North Bay Region, the area north of the city of San Francisco, California.

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Maps of Sonoma County
Name Format County Topographic Geologic
Annapolis 7.5 Quadrangle Sonoma PDF icon Topographic 3 MB
Arched Rock 7.5 Quadrangle Sonoma PDF icon Topographic 1 MB
Bodega Head 7.5 Quadrangle Sonoma PDF icon Topographic 3.2 MB
Camp Meeker 7.5 Quadrangle Sonoma PDF icon Topographic 3.2 MB PDF icon Geologic 3.2 MB
Cazadero 7.5 Quadrangle Sonoma PDF icon Topographic 3.6 MB
Cotati 7.5 Quadrangle Sonoma PDF icon Topographic 2.7 MB PDF icon Geologic 4.3 MB
Detert Reservoir 7.5 Quadrangle Lake, Napa, Sonoma PDF icon Topographic 3.5 MB
Duncans Mills 7.5 Quadrangle Sonoma PDF icon Topographic 3.0 MB
Fort Ross 7.5 Quadrangle Sonoma PDF icon Topographic 3.3 MB
Geyserville 7.5 Quadrangle Sonoma PDF icon Topographic 3.6 MB
Guerneville 7.5 Quadrangle Sonoma PDF icon Topographic 3.8 MB
Healdsburg 7.5 Quadrangle Sonoma PDF icon Topographic 3.3 MB
Jimtown 7.5 Quadrangle Sonoma PDF icon Topographic 2.9 MB
Novato 7.5 Quadrangle Marin, Sonoma PDF icon Topographic 3.3 MB PDF icon Geologic 2.3 MB
Plantation 7.5 Quadrangle Sonoma PDF icon Topographic 2.2 MB
Point Reyes NE 7.5 Quadrangle Marin, Sonoma PDF icon Topographic 3.2 MB
Rutherford 7.5 Quadrangle Napa, Sonoma PDF icon Topographic 3.6 MB PDF icon Geologic 6.7 MB
Santa Rosa 7.5 Quadrangle Sonoma PDF icon Topographic 2.5 MB PDF icon Geologic 2.2 MB
Sears Point 7.5 Quadrangle Napa, Solano, Sonoma PDF icon Topographic 2.6 MB PDF icon Geologic 1.6 MB
Sebastopol 7.5 Quadrangle Sonoma PDF icon Topographic 2.7 MB PDF icon Geologic 4.0 MB
Sonoma 7.5 Quadrangle Napa, Sonoma PDF icon Topographic 3. MB PDF icon Geologic 6.7 MB
Stewarts Point 7.5 Quadrangle Sonoma PDF icon Topographic 1.9 MB
Two Rock 7.5 Quadrangle Sonoma PDF icon Topographic 2.5 MB PDF icon Geologic 4.0 MB
Warm Springs Dam 7.5 Quadrangle Sonoma PDF icon Topographic 3.8 MB
Mark West Springs 7.5 Quadrangle Sonoma PDF icon Topographic 3.4 MB
Kenwood 7.5 Quadrangle Napa, Sonoma PDF icon Topographic 4.1 MB PDF icon Geologic 2.4 GM
Glen Ellen 7.5 Quadrangle Sonoma PDF icon Topographic 3.0 MB PDF icon Geologic 4.8 MB
Cuttings Wharf 7.5 Quadrangle Napa, Solano, Sonoma PDF icon Topographic 2.8 MB PDF icon Geologic 3.0 MB
Calistoga 7.5 Quadrangle Napa, Sonoma PDF icon Topographic 3.3 MB
McGuire Ridge 7.5 Quadrangle Mendocino, Sonoma PDF icon Topographic 3.5 MB
Gube Mountain 7.5 Quadrangle Mendocino, Sonoma PDF icon Topographic 3.1 MB
Gualala 7.5 Quadrangle Mendocino, Sonoma PDF icon Topographic 2.5 MB
Cloverdale 7.5 Quadrangle Mendocino, Sonoma PDF icon Topographic 3.2 MB
Big Foot Mountain 7.5 Quadrangle Mendocino, Sonoma PDF icon Topographic 3.2 MB
Asti 7.5 Quadrangle Mendocino, Sonoma PDF icon Topographic 3.2 MB
Valley Ford 7.5 Quadrangle Marin, Sonoma PDF icon Topographic 3 MB PDF icon Geologic 4.5 MB
Petaluma Point 7.5 Quadrangle Contra Costa, Marin, Solano, Sonoma PDF icon Topographic 1.4 MB
Petaluma River 7.5 Quadrangle Marin, Sonoma PDF icon Topographic 2.8 MB PDF icon Geologic 1.6 MB
Petaluma 7.5 Quadrangle Marin, Sonoma PDF icon Topographic 2.8 MB PDF icon Geologic 2.5 MB
Mare Island 7.5 Quadrangle Contra Costa, Marin, Solano, Sonoma PDF icon Topographic 3.0 MB
Whispering Pines 7.5 Quadrangle Lake, Sonoma PDF icon Topographic 3.5 MB
Mount Saint Helena 7.5 Quadrangle Lake, Napa, Sonoma PDF icon Topographic 3.8 MB
Jericho Valley 7.5 Quadrangle Lake, Napa, Sonoma PDF icon Topographic 2.9 MB