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North Bay Digital Maps
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.
Sources
The maps on this website are publications of the following government agencies:
- U.S. Geological Survey Department of the Interior
- California Geologic Survey Department of Conservation
Related Links
North Bay Digital Maps
Sonoma County
Comprehensive list of maps for this county. Note: These maps are in the PDF format. To view these maps, you will need Adobe Acrobat Reader.
Note: These maps are in the 
(PDF) format. To view these maps, you will need Adobe Acrobat Reader.
| Name | Size | County | Topographic | Geologic |
|---|---|---|---|---|
| Annapolis | 7.5 Quadrangle | Sonoma | Topographic (, 3.8 Mb) |
|
| Arched Rock | 7.5 Quadrangle | Sonoma | Topographic (, 1.1 Mb) |
|
| Asti | 7.5 Quadrangle | Mendocino, Sonoma | Topographic (, 3.2 Mb) |
|
| Big Foot Mountain | 7.5 Quadrangle | Mendocino, Sonoma | Topographic (, 3.2 Mb) |
|
| Bodega Head | 7.5 Quadrangle | Sonoma | Topographic (, 1.6 Mb) |
|
| Calistoga | 7.5 Quadrangle | Napa, Sonoma | Topographic (, 3.3 Mb) |
|
| Camp Meeker | 7.5 Quadrangle | Sonoma | Topographic (, 3.18 Mb) |
Geologic (, 7.2Mb) |
| Cazadero | 7.5 Quadrangle | Sonoma | Topographic (, 3.5 Mb) |
|
| Cloverdale | 7.5 Quadrangle | Mendocino, Sonoma | Topographic (, 3.2 Mb) |
|
| Cotati | 7.5 Quadrangle | Sonoma | Topographic (, 2.69 Mb) |
Geologic (, 4.2Mb) |
| Cuttings Wharf | 7.5 Quadrangle | Napa, Solano, Sonoma | Topographic (, 2.7 Mb) |
Geologic (, 3.0 Mb) |
| Detert Reservoir | 7.5 Quadrangle | Lake, Napa, Sonoma | Topographic (, 3.5 Mb) |
|
| Duncans Mills | 7.5 Quadrangle | Sonoma | Topographic (, 3 Mb) |
|
| Fort Ross | 7.5 Quadrangle | Sonoma | Topographic (, 3.2 Mb) |
|
| Geyserville | 7.5 Quadrangle | Sonoma | Topographic (, 3.6 Mb) |
|
| Glen Ellen | 7.5 Quadrangle | Sonoma, Napa | Topographic (, 3.9 Mb) |
Geologic (, 4.79 Mb) |
| Gualala | 7.5 Quadrangle | Mendocino, Sonoma | Topographic (, 2.5 Mb) |
|
| Gube Mountain | 7.5 Quadrangle | Mendocino, Sonoma | Topographic (, 3.2 Mb) |
|
| Guerneville | 7.5 Quadrangle | Sonoma | Topographic (, 3.7 Mb) |
|
| Healdsburg | 7.5 Quadrangle | Sonoma | Topographic (, 3.3 Mb) |
|
| Jericho Valley | 7.5 Quadrangle | Lake, Napa, Sonoma | Topographic (, 3.0 Mb) |
|
| Jimtown | 7.5 Quadrangle | Sonoma | Topographic (, 2.9 Mb) |
|
| Kenwood | 7.5 Quadrangle | Sonoma, Napa | Topographic (, 11.8 Mb) |
Geologic (, 2.4 Mb) |
| Mare Island | 7.5 Quadrangle | Contra Costa, Marin, Solano, Sonoma | Topographic (, 1.7 Mb) |
|
| Mark West Springs | 7.5 Quadrangle | Sonoma, Napa | Topographic (, 3.37 Mb) |
Geologic (, 13.3 Mb) |
| McGuire Ridge | 7.5 Quadrangle | Mendocino, Sonoma | Topographic (, 3.5 Mb) |
|
| Mount Saint Helena | 7.5 Quadrangle | Lake, Napa, Sonoma | Topographic (, 3.7 Mb) |
|
| Novato | 7.5 Quadrangle | Marin, Sonoma | Topographic (, 3.3 Mb) |
Geologic (, 2.3 Mb) |
| Petaluma | 7.5 Quadrangle | Sonoma, Marin | Topographic (, 2.74 Mb) |
Geologic (, 2.5 Mb) |
| Petaluma Point | 7.5 Quadrangle | Contra Costa, Marin, Solano, Sonoma | Topographic (, 1.4 Mb) |
|
| Petaluma River | 7.5 Quadrangle | Sonoma, Marin | Topographic (, 2.8 Mb) |
Geologic (, 1.6 Mb) |
| Plantation | 7.5 Quadrangle | Sonoma | Topographic (, 2.1 Mb) |
|
| Point Reyes NE | 7.5 Quadrangle | Marin, Sonoma | Topographic (, 3.2 Mb) |
|
| Rutherford | 7.5 Quadrangle | Napa, Sonoma | Topographic (, 3.53 Mb) |
Geologic (, 11 Mb) |
| Santa Rosa | 7.5 Quadrangle | Sonoma | Topographic (, 3.17 Mb) |
Geologic (, 2.9 Mb) |
| Sears Point | 7.5 Quadrangle | Sonoma, Napa, Solano | Topographic (, 2.56 Mb) |
Geologic (, 2.0 Mb) |
| Sebastopol | 7.5 Quadrangle | Sonoma | Topographic (, 2.6 Mb) |
Geologic (, 3.7 Mb) |
| Sonoma | 7.5 Quadrangle | Napa, Sonoma | Topographic (, 3.73 Mb) |
Geologic (, 4.0 Mb) |
| Stewarts Point | 7.5 Quadrangle | Sonoma | Topographic (, 1.9 Mb) |
|
| Tombs Creek | 7.5 Quadrangle | Sonoma | Topographic (, 3.1 Mb) |
|
| Two Rock | 7.5 Quadrangle | Sonoma | Topographic (, 2.45 Mb) |
Geologic (, 4.0 Mb) |
| Valley Ford | 7.5 Quadrangle | Marin, Sonoma | Topographic (, 2.99 Mb) |
Geologic (, 4.6 Mb) |
| Warm Springs Dam | 7.5 Quadrangle | Sonoma | Topographic (, 3.8 Mb) |
|
| Whispering Pines | 7.5 Quadrangle | Lake, Sonoma | Topographic (, 3.6 Mb) |
