Geology, Geography & Maps
Sonoma State University Resources:
- North Bay Digital Maps
- Maps Research Guide
- California topographic maps on CD-ROM
- Center for Interdisciplinary
Geospatial Analysis (CIGA)

- Links to GIS Data

- Geologic research by Rolfe C. Erickson
- Earthquake of 1906 Online Collection
Other Links:
- Alquist-Priolo Earthquake Fault Zone Maps (California)

- Recent earthquake events in California

- Bay Area earthquake shaking hazard maps

- USGS earthquake hazards

- Geologic hazards of California

- California earthquake news & information

- Sonoma County Hazard Mitigation Plans & Maps

- Sonoma County flood zones map

- FEMA flood maps

- California Coastal Records Project

- National Geothermal Data System (NGDS)

- Regional Profile / North Coast - Alder Creek to Pigeon Pt.

- Regional Profile / North Coast - Alder Creek to Oregon border

- Soil Survey of Lake County

- Soil Survey of western Mendocino County


- Topographic mapping overview

- Topographic map symbols

- Topographic maps of California (historic)

- The National Map: Histoical Topographic Map Collection (USGS)
