Help 24/7North 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
Lake 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 |
|---|---|---|---|
| Aetna Springs | 7.5 Quadrangle | Lake, Napa | Topographic (, 3.0 Mb) |
| Bartlett Mountain | 7.5 Quadrangle | Lake | Topographic (, 3.5 Mb) |
| Bartlett Springs | 7.5 Quadrangle | Colusa, Lake | Topographic (, 3.8 Mb) |
| Benmore Canyon | 7.5 Quadrangle | Lake | Topographic (, 3.5 Mb) |
| Clearlake Highlands | 7.5 Quadrangle | Lake | Topographic (, 2.7 Mb) |
| Clearlake Oaks | 7.5 Quadrangle | Lake | Topographic (, 2.6 Mb) |
| Crockett Peak | 7.5 Quadrangle | Lake | Topographic (, 3.5 Mb) |
| Cow Mountain | 7.5 Quadrangle | Lake, Mendocino | Topographic (, 3.4 Mb) |
| Detert Reservoir | 7.5 Quadrangle | Lake, Napa, Sonoma | Topographic (, 3.5 Mb) |
| Elk Mountain | 7.5 Quadrangle | Lake, Mendocino | Topographic (, 3.2 Mb) |
| Fouts Springs | 7.5 Quadrangle | Colusa, Lake | Topographic (, 3.5 Mb) |
| Glascock Mountain | 7.5 Quadrangle | Colusa, Lake, Yolo | Topographic (, 3.4 Mb) |
| Highland Springs | 7.5 Quadrangle | Lake, Mendocino | Topographic (, 3.1 Mb) |
| Hopland | 7.5 Quadrangle | Lake, Mendocino | Topographic (, 3.3 Mb) |
| Hough Springs | 7.5 Quadrangle | Colusa, Lake | Topographic (, 3 Mb) |
| Hull Mountain | 7.5 Quadrangle | Glenn, Lake, Mendocino | Topographic (, 3.4 Mb) |
| Jericho Valley | 7.5 Quadrangle | Lake, Napa, Sonoma | Topographic (, 3.0 Mb) |
| Kelseyville | 7.5 Quadrangle | Lake, Mendocino | Topographic (, 3.3 Mb) |
| Kneecap Ridge | 7.5 Quadrangle | Glenn, Lake | Topographic (, 3.1 Mb) |
| Knoxville | 7.5 Quadrangle | Lake, Napa, Yolo | Topographic (, 3.4 Mb) |
| Lake Pillsbury | 7.5 Quadrangle | Lake | Topographic (, 3.2 Mb) |
| Leesville | 7.5 Quadrangle | Colusa, Lake | Topographic (, 3.1 Mb) |
| Lower lake | 7.5 Quadrangle | Lake | Topographic (, 3.1 Mb) |
| Lucerne | 7.5 Quadrangle | Lake | Topographic (, 1.8 Mb) |
| Mount Saint Helena | 7.5 Quadrangle | Lake, Napa, Sonoma | Topographic (, 3.7 Mb) |
| Potato Hill | 7.5 Quadrangle | Colusa, Lake | Topographic (, 3.5 Mb) |
| Potter Valley | 7.5 Quadrangle | Lake, Mendocino | Topographic (, 3.1 Mb) |
| Purdys Gardens | 7.5 Quadrangle | Lake, Mendocino | Topographic (, 3.6 Mb) |
| Saint John Mountain | 7.5 Quadrangle | Colusa, Glenn, Lake | Topographic (, 3.8 Mb) |
| Sanhedrin Mountain | 7.5 Quadrangle | Lake, Mendocino | Topographic (, 3.5 Mb) |
| Upper Lake | 7.5 Quadrangle | Lake, Mendocino | Topographic (, 3.4 Mb) |
| Van Arsdale Reservoir | 7.5 Quadrangle | Lake, Mendocino | Topographic (, 3.3 Mb) |
| Whispering Pines | 7.5 Quadrangle | Lake, Sonoma | Topographic (, 3.6 Mb) |
| Wilbur Springs | 7.5 Quadrangle | Colusa, Lake | Topographic (, 3.5 Mb) |
| Wilson Valley | 7.5 Quadrangle | Colusa, Lake, Yolo | Topographic (, 3.4 Mb) |
