California Maps

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This research guide lists maps and atlases found in print in the HSU Library and on the Internet that graphically depict California using maps. Listings include static maps and map servers that dynamically produce custom maps based on parameters you specify.

Maps by Theme: Gazetteers (Place Names); General-Statewide; General-Regional; Agriculture; Coast and Ocean; Culture and Community; Demography; Energy and Mineral Resources; Environmental Pollution; Forests and Rangelands; Geology; Historical; Land Use and Ownership; Natural Communities and Habitats; Natural Hazards; Outline; Political; Public Health

Recreation

Soils

Street and Road

Topography

Vegetation

Water Resources and Water Quality

Weather and Climate

Wildlife - General

Wildlife - Amphibians

Wildlife - Fish

Wildlife - Reptiles

Wildlife - Birds

Wildlife - Mammals

Other Geospatial Resources

Northwestern California Maps

Digital Spatial Data: California--HSU Library

Digital Spatial Data: California--Internet

California Aerial Photography & Imagery

Gazetteers (Place Names)

California County High Points (Carey) Lists the highest point in each California county. Includes name, elevation, climbing class, UTM coordinates, and topographic quadrangle.

California Gold Camps (Gudde) 1975 (Ref F 865 G83) "Geographical and Historical Dictionary of Camps, Towns, and Localities Where Gold was Found and Mined; Wayside Stations and Trading Centers." Includes maps of selected places names, extensive bibliography and list of places by county.

California Historical Landmarks (California Department of Parks and Recreation Office of Historic Preservation) (1990 print copy available in Ref F 862 C12 1990) Lists over 1000 buildings, structures, sites, or places that have been determined to have statewide historical significance. The online site lists California Registered Landmarks by county. The print version also includes alphabetical and numeric indexes.

California Index of Towns (USGenNet) From the 1895 Rand McNally New Atlas of the World. Each entry includes population; county; location on state map; and if the location has a post office, railroad or express office.

California Peaks (Climber.org) Alphabetical list of 1990 peaks that range in elevation from 5710 ft. to 14494 ft. Each entry includes links to the Geographic Names Information System entry and to maps in TopoZone. Some entries include links to photographs and to the Sierra Nevada Peaks List.

California Place Names: The Origin and Etymology of Current Geographical Names (Gudde) 1998 (ref F 859 G79 1998) The definitive reference on California place names.

California Places of Interest (Maher) Uses Google Maps to map California place names found in the Geographic Names Information System. Select a county and then one or more natural or manmade features to map matching features.

California's Geographic Names: A Gazetteer of Historic and Modern Names of the State (Durham) 1998 (ref F 859 D87 1998)

California's Spanish Place-Names : What They Mean and How They Got Their (Marinacci and Marinacci) 1980 (Ref F 861 M32) "Dictionary-index" to place names gives pronunciation.

Geographical Locator (Gustafson) Use a clickable map of California to identify the following location specific information: latitude/longitude; legal description, including township and range; elevation; gradient and aspect; state, county and FIPS code; hydrologic unit name and code; nearby named places from the Geographic Names Information System; 7.5 minute USGS topographic maps for the area; and links to online 1:100,000 scale maps and other online maps for the area.

Historic Spots in California (Hoover, Rensch, Rensch and Abeloe) 2002 (Ref F 862 H57 2002) Contains detailed descriptions by county of historic landmarks that highlight events and places in California history.

Jepson Place Name Index (Jepson Herbarium) Contains approximately 41,000 place names found on Jepson Herbarium botanical collection labels. Over a period of approximately 50 years, staff and associates of the Jepson Herbarium have reserched these place names using maps in libraries and archives at Berkeley and elsewhere.

Named Freeways, Highways, Structures and Other Appurtenances In California (California Department of Transportation) Provides information on officially named freeways, highways, Blue Star Memorial highways, highway structures, roadside rests, and plaques on the California highways.

Named Highways and Structures: an Index (California Highways) Alphabetical list of names given to highways and structures in and on the California state highway system. For each name, a link is given to the page for that highway, where more details about the name can be found.

National Register of Historic Places: California (US National Park Service) (1994 print copy available in Ref E 159 N3418) Lists districts, sites, buildings, structures, and objects that are significant in American history, architecture, archeology, engineering, and culture. Within each state sites are organized by county.

Place Names in California (California Department of Transportation) 2006 (earlier print copies in Cal Doc T900 P45) List places shown on CalTrans California Road System (CRS) maps. The CRS maps show all public roads, the functional classification of public roads, cities, urban-rural boundaries and other features.

Spanish and Indian Place Names of California: Their Meaning and Their Romance (Sanchez) 1914 (Ref F 859 S26) Place names are organized in regional chapters.

Whipple Well: A Database for Mining, Prospecting, Metal Detecting, And Treasure Hunting in California (CalSign) Database of current and historical places names derived from various sources, organized by county. For each entry gives information on type of feature, geographic coordinates and U.S.G.S 7.5 minute topographic quadrangle.

General--Statewide

1:100,000 Scale Metric Planimetric Maps (California Department of Forestry and Fire Protection) (map G 4360 S100 C4) Series of maps at a scale of 1:100,000 on a planimetric base that covers all of California.
Atlas of California (Donley) 1979 (atlas G 1525 A84) The major thematic atlas for California containing maps on a wide variety of physical, demographic, cultural, and economic topics.
Atlas of California (Maps.com) 2001 (Atlas G 1525 M3 2001) Small format atlas containing approximately 50 historical and thematic maps of California . Each map is available online using the web address and key code listed on each map in the atlas.
Atlas of California (Humboldt State University and California Geographic Alliance) Initial collection of interactive physical, cultural and historical maps of California being developed for a new edition of a statewide California atlas.
California (MapQuest)
California (Nationalatlas.gov) Reference map of California that shows major physical features, populated places and transportation routes.
California Atlas: A Geographic Journey (California Geographic Associates) 2000 (atlas G 1525 C35 2000) Small format atlas containing maps on approximately 20 historical and contemporary topics.
California Digital Conservation Atlas (California Resources Agency) Interactive mapper that includes natural resource and planning data from a variety of local, state, and national sources. Included are approximately 100 data layers in 12 thematic and base categories covering environmental hazards, plans, biodiversity, demographics, roads, jurisdictions, hydrology, land ownership, and land use/cover. The Atlas is designed to provide natural resource information in a regional and statewide context and is are not appropriate for viewing at map scales finer than 1:24,000. Users can zoom to a specific location using the interactive mapper; geographic, UTM or PLSS coordinates, or placename; and view one or more information layers at varying scales for creating custom maps. Maps created can be printed and the associated data can be downloaded for gis use.
California Elevation Map (Geology.com)
California (Northern) (Perry-Castaneda Map Library) Image of the 1990 USGS 1:2,500,000 Map of California.
California: Patterns on the Land (Durrenberger) 1976 (atlas G 1525 D8 1976)
California Patterns: A Geographical and Historical Atlas (Hornbeck) 1983 (atlas G 1525 H6 1983) Emphasis is on historical maps.
California Physical Map/California Relief Map (Geology.com)
California Relief Map (Zeducorp) Show California relief.
California (Southern) (Perry-Castaneda Map Library) Image of the 1990 USGS 1:2,500,000 map of California.
California Topo Map (Zeducorp) Shows California elevation using color gradients.
City Lights (California Dept. of Forestry and Fire Protection, Fire and Resource Assessment Program) Show distribution of nighttime lights over California generated from a mosaic of Defense Meteorological Satellite Program Operational Linescan System imagery.
Color Landform Atlas: California Contains small scale shaded relief maps and satellite images of California.
Counting California (California Digital Library) Contains current and historical statistics from California and United States government sources, frequently at the county level. For some statistical categories one can also generate choropleth maps.
DEM Shaded Relief Map of California (US Geological Survey) Shaded relief map of California generated from digital elevation model data.
Digital Atlas of California (California Geographical Survey) Series of statewide and major metropolitan area thematic maps that show population and race, citizenship, income, poverty and adult educational attainment.
Geofinder (CERES) Find and retrieve geographic and environmental data from the California Resources Agency and other partner organizations. Drill down through a map of California using predefined geographies like zip code, watershed, bioregion, county, urban area or by place name. Once an area of interest is identified, you can retrieve digital orthophoto quads, scanned USGS map sheets, a list of rare species and natural communities inventoried by the California Natural Diversity Data Base. GeoFinder also lets you crosswalk between these geographies.
Geopolitical Map of California (Purdue University Center for New Crops and Plants Products)
ICEMAPS2 (Interactive California Environmental Management, Assessment, and Planning System) (International Center for the Environment) Interactive mapper that allows users to pan and zoom to a specific geographic area and display one or more layers from 30 datasets. One can also query the database and display information about all currently displayed map layers.
Infoplease Atlas - California (Infoplease) Includes a statewide map.
Landsat 7 Orthorectified Map of California (US Geological Survey)
Map of the State of California (Cool Fire Technology)
National Elevation Dataset Shaded Relief Map of California (US Geological Survey)
National Highway System: Northern California (US Federal Highway Administration)
National Highway System: Southern California (US Federal Highway Administration)
Northern California Atlas and Gazetteer (DeLorme) 1998 (atlas G 1525 D42 1998) Series of 1:150,000 scale maps that show topography, roads, cultural features, recreation and historical sites and trails.
Official State Map (California Division of Tourism) This is a statewide map in pdf format. The California Tourism site also includes 13 regional maps and major city maps in .pdf format.
Satellite Image Map of California (Geology.com) Also includes links to selected regional Landsat Geocover satellite image maps of California.
Shaded Relief with Color as Height, California Mosaic (NASA) Combines shading and color coding of topographical height. Image can be viewed or downloaded in several formats.
Shaded Relief Map of California (US Geological Survey)
State of California : Shaded Relief (US Geological Survey) 1971 (map G4361 C1 1971 .G4) 1:1,000,000 scale map.
State Topography Image: California (US National Geophysical Data Center) Color shaded relief image with county boundaries generated from 30 arc-second digital elevation model (DEM) data. For additional information see US State Images from 30 Second Topographic Data.

General--Regional

ABAG Geographic Information Systems (Association of Bay Area Governments) Interactive mapper covers the San Francisco Bay area.
Atlas of Social and Economic Conditions and Change in Southern California (Raettig, Elmer and Christensen) 2001 (USFS General Technical Report PNW-GTR-516) (print copy available in Docs A 13.88: PNW-516) Choropleth maps and text document the current status and changes that occurred during the 1987-1998 period in the social and economic conditions of 26 southern California counties.
Mojave Desert Ecosystem Program Interactive Atlas
NavigateLA (City of Los Angeles Department of Public Works, Bureau of Engineering) Web based interactive mapper that provides over 400 layers of geographic information, linked databases, and reports.
SANBAG GeoViewer (San Bernardino Associated Governments) Emphasis is on transportation and land use planning.
SANDAG Maps and GIS (San Diego Association of Governments) Includes several interactive mappers and downloadable geospatial data.
San Diego Geographic Information Source (SanGIS) (City and County of San Diego) Geographic data warehouse that includes a map gallery,an interactive mapper and downloadable geospatial data.
San Francisco Bay Area EcoAtlas (San Francisco Estuary Institute) Environmental data and information about the San Francisco Estuary and its watersheds.
Southern California Association of Governments (SCAG) Interactive Atlas - Interactive atlas allows one to create, view, and print maps using demographic and economic data layers; and city, county, and zip code boundary files.

Agriculture

Census of Agriculture Interactive Statistical Map: California (National Agricultural Statistics Service) Maps statistical data derived from the 2002 Census of Agriculture.

Important Farmland in California, 2000 (California Department of Conservation) 2002 (print copy available in map G4361 J1 2000 C3) Color map at a scale of 1:1,250,000 showing current land use within the Farmland Mapping and Monitoring Program survey area.

Important Farmland Maps (California Department of Conservation) 1994 - (map G 4361 G4 1994 C35) Series of maps for selected counties in California issued at scales of 1:100,000 or 1:120,000 that classify agricultural land resources. For additional information see Farmland Mapping and Monitoring Program. Animated Time Series Maps are also available for selected counties showing land use changes from 1984 to 1998.

Initial Assessment of the Health and Condition of California's Lands and Natural Resources (California Resources Agency) 2002. Report includes an extensive collection of supporting maps on land cover, land use, habitats, public lands, agricultural lands and forest and woodlands.
Urban Development 1990-2002 and Important Farmland 2002 (California Department of Conservation) 2004. Map covers the upper San Joaquin Valley.

Coast and Ocean

Assessment and Atlas of Shoreline Erosion Along the California Coast (California Department of Navigation and Ocean Development) 1977 (Cal Docs N 540 S36) Includes an atlas section of 129 maps at a scale of 1:40,000 which classifies California's shoreline into six shoreline conditions.

Atlas of California Coastal Marine Resources (California Department of Fish and Game) 1980 (atlas G 1526 L1 C35 1980; also Cal Doc F 650 C52) Set of 134 mostly 1:24,000 scale maps of California's nearshore and intertidal environment which indicate presence of biological resources (shellfish, marine mammals and birds, pelagic and bottomfish, kelp beds, spawning areas), human resources (piers, artificial fishing reefs, sewer outfalls and power plant sites), and land use (refuges, areas of special biological significance, fishing and recreational areas).

Historical Map and Chart Collection (US NOAA. Office of Coast Survey) Contains over 20,000 maps and charts from the late 1700s to present day. The collection includes some of the earliest US nautical charts, hydrographic surveys, topographic surveys, bathymetric maps, geodetic surveys, city plans and Civil War battle maps. Search by keyword, geographic area, type of map, date, or chart number.

Major Harbor Areas (California Department of Fish and Game) Taken from the Survey of Non-Indigenous Aquatic Species in the Coastal and Estuarine Water of California.

Minor Ports (California Department of Fish and Game) Taken from the Survey of Non-Indigenous Aquatic Species in the Coastal and Estuarine Water of California.

National Wetlands Inventory (US Fish & Wildlife Service) (microfiche copies in Docs I 49.6/7-12) Series of maps at scales of 1:24,000 and 1:100,000 for the United States which classify wetlands into 55 different classes using the Classification of Wetlands and Deepwater Habitats of the United States (Cowardin) 1979 (print copy available in Docs I e49.89:79/31). National Wetlands Inventory Maps lists maps available for each state, including California. For additional information see Wetland Mapping and Inventory (US Geological Survey). Wetlands Mapper (US Fish & Wildlife Service) is an interactive mapper that allows one to view National Wetlands Inventory digital data as well as stream and road data. You can also view wetlands data layers with Google Earth.

Culture and Community

California Indian Pre-contact Tribal Territories (California Indian Library Collections)

California Indian Tribal Groups (California Indian Library Collections)

California Tribal Linguistic Groups (California Indian Library Collections)

City Lights (California Dept. of Forestry and Fire Protection, Fire and Resource Assessment Program) Show distribution of nighttime lights over California generated from a mosaic of Defense Meteorological Satellite Program Operational Linescan System imagery.

Federally Recognized California Tribes (California Indian Library Collections)

Indian Lands in California (US Bureau of Indian Affairs) 1990

Native American Tribal Lands and Reservations (US Environmental Protection Agency) Shows California tribal and federal lands.

Native California: Languages and Tribes (California Native American Heritage Commission)

Tribal Areas of California (Pacific Western Traders) 1996 (print copy available in map G 4361 E1 1996 T7) Tribal areas and designations are coordinated with the Smithsonian Institution's Handbook of North American Indians series. Color coding identifies the language families considered to be represented in California.

Demography

Los Angeles County: Racial/Ethnic Diversity 2000

American Fact Finder: Thematic Maps: California (US Census Bureau) Create choropleth maps using approximatley 250 variables from the 2000 Census of Population and Housing. Available geographies within California include county, census tract, metropolitan area, congressional district and zip code. One can change the number of shading classes or change the method by which the geography is assigned to a shading class. Thematic maps can be created with existing summary data or custom tabulations. Use the navigation links near the top of the page to change themes and geographies.

California Ethnic Distributions (Maps.com) Series of statewide choropleth maps showing ethnic distribution by county.

California's Population, with Population of California's Major Cities (US Geological Survey)

Digital Atlas of California (California Geographical Survey) Contains demographic and social maps for the entire state and major metropolitan areas..

Los Angeles County Population Density 1930-2000 (Ralph & Goldy Lewis Center for Regional Policy Studies, UCLA)

Los Angeles County Racial/Ethnic Diversity 1940-2000 (Ralph & Goldy Lewis Center for Regional Policy Studies, UCLA)

Neighborhood Knowledge California (NKCA) (UCLA School of Public Policy and Social Research) User-friendly site for neighborhood research that produces maps, charts, and graphs from a database of California social, demographic and bank lending data. Its aim is to promote greater equity in housing and banking policy. Geographies that can be displayed include county, zip code, city, census tract, senate or assembly district, congressional district, or your own defined neighborhood. You can also upload personal spreadsheet information into NKCA's mapping system and analyse that information in conjunction with NKCA's datasets.

Population History Maps of California Places, 1770 to 2000 (Berlo) 2000 (ref HB 3525 C2 B471 2000) Consists of approximately 1,000 maps that show the location and size of populated places in California at 10-year intervals from 1770 through 2000. A companion work is Population History of California Places (Berlo) 2000 (ref HB 3525 C2 B47 2000) that includes population figures for California places at 10-year intervals from 1846 to 2000; yearly intervals for early California places 1769 to 1850; and other population tables. Also includes a set of 50 maps showing all included place names.

San Diego Tijuana Interactive Atlas (San Diego Association of Governments) Generate custom choropleth maps using 27 demographic variables.

Southern California Association of Governments Interactive Atlas - Interactive atlas allows one to create, view, and print maps using demographic and economic data layers; and city, county, and zip code boundary files.

Zip Codes by County: California (Melissa Data) Includes by county a Google Maps outline of each zip code, along with a table giving demographic and economic characteristics of the zip code. Requires free registration.

Energy and Mineral Resources

California's Major Electric Transmission Lines

California Active Gold Mines 2000-2001 (California Geological Survey)
California Geothermal Resources ((US Department of Energy) 2003. Statewide map shows regions of known or potential geothermal resources and specific locations of geothermal applications and features.
California On-Line Energy Maps (California Energy Commission) Series of statewide California maps showing power plants; transmission lines and pipelines; service areas and renewable energy capabilities.
California Wind Atlas ( California Energy Commission and California Department of Water Resources) 1985 (Cal Docs E 2015 W55) Available wind data for California is summarized using charts, maps, and graphs.
California Principal Mineral Producing Localities (US Geological Survey & California Division of Mines & Geology) From Minerals Yearbook
California Principal Mineral Producing Localities 1900-2000 (California Geological Survey)
Energy Map of California (California Division of Oil, Gas, and Geothermal Resources) 2000 (map G4361 N3 2000 C2) 1:1,000,000 scale map shows sedimentary basins, oil, gas and geothermal fields, pipelines, shipping lanes, tanker terminals, refineries, and power plants.
Renewable Energy Atlas of the West: California (Land and Water Fund of the Rockies) The basic atlas profiles and maps wind, solar, geothermal and biomass power in the 11 Western states, including availability, current status, and government policies. Includes a regional overview and profiles for each state. The basic site contains both a collection of maps and an interactive mapper.
Geothermal Resources of California (California Division of Mines and Geology) 1980 (California Geologic Data Map #4) (map G 4361 N32 1980 C35; also Cal Doc C 810 G4d #4)
Map of California Historic Gold Mines (California Divison of Mines and Geology) 1998 Shows the location of 13,500 historic California gold mines. Produced for the California Gold Discovery to Statehood Sesquicentennial (1998-2000).
Maps of Seeps in California (US Geological Survey and California Department of Conservation) Maps of oil and gas seeps and fields in California
Mines and Mineral Producers Active in California (1997-1998) 1999 (Cal Docs C810 S59 # 103) (CGS Special Publication # 103) List of active mines in California by county, with indexes by commodity and county; and operator and mine. Appendix includes a series of maps for each major mineral commodity that shows location of mines. Also includes a 1:500,000 scale map that shows locations of all mines keyed to an index in the report.
Oil, Gas and Geothermal Fields in California (California Department of Conservation. Division of Oil, Gas and Geothermal Resources) 2001 (print copy available in G 4361 H8 2001 C33) Shows oil and gas districts, geothermal districts, oil fields, gas fields, geothermal fields, and sedimentary basins with oil, gas, or geothermal production.
Technical Map of the Geothermal Resources of California (Majmundar) 1983 (Cal Docs C 810 G4d #5) (California Geologic Data Map #5) More detailed and technical 1:750,000 scale map than the original Geothermal Resources of California map. Shows relationships between geothermal resources, faults, and Quaternary volcanic rocks. The text also provides technical information on the chemistry of individual geothermal waters and interpertations of subsurface temperatures.
USGS Mineral Resources Data: U.S. View (U.S. Geological Survey) Interactive mapper allows one to display data layers showing geology, lithology, geochemical and geophysical parameters, and mineral resources. Part of the larger Mineral Resources On-Line Spatial Data

Environmental Pollution

Air Quality and Meteorological Information System (AQMIS) (California Air Resources Board) Interactive databasee containing real-time (and historical) air quality, ozone, and meteorological data that can be used to track air quality and support smoke management and air pollution forecasting. Includes data from over 160 air quality sites and over 800 meteorological sites within less than two hours of when the data are measured. The interactive map interface will display 14 air quality and eight ground level meteorological parameters.
CHAPIS: Community Health Air Pollution Information System (California Air Resources Board) Interactive mapper identifies sources of air pollution emissions within a specified geographic location. Select a county, region, or zip code; or use the interactive mapper to zoom to an area. The combined contribution of cars, trucks, industrial and commerical facilities, and other air pollution sources are mapped. Tools are provided that summarize statistics for an area of interest. From the CHAPIS map there are also links to other data sources, such as tools to query the statewide emission inventory database and the network of air monitoring stations.
GeoTracker (California State Water Resources Control Board) Interactive mapper to environmental data for regulated facilities in California including underground fuel tanks, fuel pipelines, and public drinking water supplies.
Maps Available on This Website (California Air Resources Board) Links to air pollution related maps on the ARB website.
Petroleum Related Pollution (Energy Independence Now) Statewide map that shows superfund sites, leaking underground storage tanks, major oil spills and air basin status for ozone.
Reported Agricultural Pesticide Use in [ County ] (Californians for Pesticide Reform) Includes a map for each California county that shows "total pounds of active ingredient applied per square mile."

Forests and Rangelands

Distribution of Forest Trees in California (Griffin and Critchfield) 1976 (US Forest Service Research Paper PSW-82) (Docs A 13.88:PSW-82) Maps show distribution of 86 trees in California. Accompanying notes give elevational limits, geographic relationships of species, and ecological and historical factors.

Forest Area from CalVeg (1977) by County and Bioregion (California Department of Forestry and Fire Protection)

Forest Cover Map of California (With Shade Relief) (US Geological Survey)

Generalized Types and Age Classes of Timber Stands Redwood-Douglas Fir Subregion, California (US Forest Service) 1978. Shows six types and four age classes in the coastal regions from the Oregon border to Santa Cruz.

Initial Assessment of the Health and Condition of California's Lands and Natural Resources (California Resources Agency) 2002. Report includes an extensive collection of supporting maps on land cover, land use, habitats, public lands, agricultural lands and forest and woodlands.

OakMapper webGIS: Monitoring Sudden Oak Death the California (California Oak Mortality Task Force)

State Responsibility Areas Shown by Direct Protection Group (Information Center for the Environment) Statewide map of California showing agencies responsible for fire protection.

Timber-Stand--Vegetation Cover Maps (California Cooperative Soil Vegetation Survey) (map G 4361 K2 s31 U5) Series of 467 maps produced between 1948 and 1962 at a scale of 1:31,680 that map timber characteristics in northern California.

Geology

Guides and Indexes -- For more detailed or site-specific studies check the 1) HSU Library Catalog for books; 2) GeoRef for journal articles, government documents, conference papers, and theses; and 3) references in the following sources. See also the indexes listed under California Environment Information Sources - Geology - Guides and Bibliographies.

Geologic Map Index for California (Fuller) 1987 (Docs I 19.86:C12/986) Lists 1366 California geological maps, excluding those published in theses, dissertations and state open file reports. Accompanying index maps are arranged by scale range and show the area of geologic mapping covered by each map. This print index has been incorporated into the continuously updated National Geologic Map Database that includes over 4500 geologic maps for California.

Guide to USGS Geologic and Hydrologic Maps (Andriot) 1992 (Abstract Docs QE 77 G85) Includes subject, area and geographic coordinate indexes.

Index to Geologic Mapping in California (California Geological Survey) Selective bibliography to geologic mapping of California that is arranged into 27 1:250,000 scale quadrangles corresponding to the Regional Geologic Map Series. The ongoing bibliography is maintained to support the series. Each completed quadrangle in the Regional Geologic Map Series includes a more detailed Index to Geologic Maps Used in Compilation of the ... Quadrangle.

Index to Geologic Maps of California (California Division of Mines and Geology) Subdivided into the same 27-sheet sequence as the 1:250,000 Geologic Map of California. Updated at periodic intervals, it was originally compiled for the production of the statewide Geologic Map of California. Plotted on each index sheet are published and open-file maps issued by the US Geological Survey or California Division of Mines and Geology, and maps published in geologic guidebooks, geologic journals, and conference proceedings:

: maps to 1956 CDMG Special Report 52 (Abstr Cal Docs C 810 S6); 1957-1960 CDMG Special Report 52A (Abstr Cal Docs C 810 S6); 1961-1964 CDMG Special Report 52B (Abstr Cal Docs C 810 S6); 1965-1968 CDMG Special Report 102 (Abstr Cal Docs C 810 S6); 1969-1975 CDMG Special Report 130 (Abstr Cal Docs C 810 S6); 1976 California Geology 34(4): 80-84, Apr. 1981 (Cal Docs C 810 S6); 1977-1978 California Geology 36(1): 6-13, Jan. 1983 (Cal Docs C 810 S6)

Index to Published Landslide Maps, California Coast Ranges, Monterey County and North for Use in Timber Harvest Plan Preparation on Non-Federal Land. (California Divison of Mines and Geology) 1999 (Special Publication #120) (print copy available in Cal Docs C 810 S59 1999 #120) For each of 269 USGS topographic quadrangles lists geologic and landslide map coverage from two major CDMG mapping efforts listed below.

List of U.S. Geological Survey Geologic and Water-Supply Reports and Maps for California (US Geological Survey) 1987 (Abstract Docs I 19.41/7: C12) Lists reports published by the US Geological Survey relating to the geology, mineral resources and water resources of California from 1880 to 1987. Reports are listed by series with subject and county indexes.

National Geologic Map Index (US Geological Survey) Catalog of paper and digital geologic maps. Searchable by geologic theme, geographic area (clickable map, county, 1:100,000 quad, geographic coordinate), author, title, map scale, publisher, and map number. When complete, the database will contain information about geologic maps produced by the USGS, other federal agencies, tribal governments, state geological surveys, local governments, academic institutions, and the private sector.

Geologic Map Index to United States Geological Survey 7.5' and 15' Quadrangles of California (Crotts) Indexes geologic maps of California included in 14 major map and monograph series published by the US Geological Survey. Arranged by topographic quadrangle name.

Publications Warehouse (US Geological Survey) Indexes over 1500 US Geological Survey geologic and hydrologic maps covering California. Includes links to online fulltext if available.

"Source Data Index" IN An Explanatory Text to Accompany the 1:750,000 Scale Fault and Geologic Maps of California (Jennings) 1985, pp. 125-197 (CDMG Bulletin #201) (Cal Doc C 810 B9 #201) Set of 1:250,000 scale indexes corresponding to the 27 quadranges of the Geologic Map of California. The index for each quadrangle shows geologic mapping published between the date of the issuance of the original geologic quadrangle and 1985. For earlier mapping one should refer to the Index to Geologic Mapping issued with the original quadrangle.

Maps & Atlases

Historical

Collections
- American Memory (Library of Congress) Includes images for over 850 historical California maps. Using "Search All Collection" enter "california maps" to browse all California maps in the collection or enter more specific keywords. Includes "bird's eye" view maps for many keys cities in California.
- Automobile Club of Southern California collection, 1892-1963 (University of Southern California Digital Archive) Includes approximately 500 examples of strip maps produced by the Auto Club for southern California that cover the years 1912-1936. The Auto Club began charting and mapping of southern California's roads in 1906. These maps offer a continuous, definitive record of the development of roadways and roadside services in the region. Strip maps illustrate major routes between destinations and include a list of approved hotels, restaurants and garages that had satisfied the Auto Club's standards for facilities and service. The site also includes photos, engineering notebooks, and the Auto Club magazine.
- California Digital Maps (UC Berkeley Earth Sciences and Map Library) Includes over 2200 online historical maps, most of which are pre-20th Century.
- David Rumsey Collection Included within the 12,000 online historical maps are over 1300 maps of California and its regions and cities, dating mostly from the 19th century.
- Historic Map Index (Broer Map Library) Indexes over 450 online historical maps available from 25 major map collections.
- Historical Maps of California (University of Alabama) Contains approximately 100 images of California historial maps selected from the University of Alabama Map Library and other sources.
- Calisphere: Maps (California Digital Library) Includes over 2000 images of California historical maps selected from the University of California libraries and museums and from a variety of cultural heritage organizations. Browse or search by keyword.
- Union Catalogue of Map Collections (California Map Society) Catalog of approximately 700 maps of California and the West from three collections: The Huntington Library, the Pasadena Museum of History and the Altadena Historical Society. Each entry includes an online image.
Individual Maps and Atlases
- Atlas of Historical County Boundaries: California (Newberry Library) Interactive map allows you to zoom and pan, select layers to display and time period to portray of California counties and county boundaries beginning with 1850. There is also a county-by-county chronology and a statewide consolidated chronology of all changes in county boundaries, names, organization and attachments.
- California 1895 (US GenNet) California state map from the 1895 Rand McNally New Atlas of the World. Includes inset of Central California. More detailed maps of each county are also available.
- California 49: Forty-nine Maps of California from the Sixteenth Century to the Present (Heckrotte & Sweetkind) 1999 (Case GA 413 C35 1999)
- California County Boundary Historical Maps (Berlo) 2002 (Atlas G 1526 F7 B47 2002) Contains two sets of maps that show the development of California's county boundaries from 1850-2000. The first set consists of 45 maps of the entire state that show each year when a county boundary was changed. The second set subdivides the state into 18 regional sheets, each of which shows every line that has ever been a county boundary, the boundary date, and the associated county.
- California County Maps (CAGenWeb) Links to a county maps scanned from 1895 and 1914 altlases
- California as an Island (Johannes Vingboons) 1639. From exhibit American Treasures of the Library of Congress
- California as an Island ( Louis Hennepin) 1699
- California Labor History Map (Cornford and California State Library) Interactive atlas to over 1200 key events in the state’s labor history that have affected the lives of working people. Search by location, date, or keyword. Detailed short essays describe the larger historical context surrounding many of these events. California Labor History : a history of labor's contributions to California's development, 1769-2003 (Cornford) 2003 (map G 4361 G8 2003 C3) marks 262 significant events in California labor history from 1769 to 2003.
- The Changing Counties (CalSign) Series of interactive maps starting in 1850 that show creation, spitting and combining of county boundaries.
- Historic Photos and Maps of California Highways (Furqueron) Earliest maps date from 1926
- Historic Topographic Maps of California (UC Berkeley, Earth Sciences & Map Library) When complete will contain images of historic 7 1/2' and 15' topographic quadrangles of California produced by the US Geological Survey from 1895 to the present. Currently includes maps covering the greater San Francisco Bay. Use an image map to select the area of interest; or search by quad name or place name.
- Historical Atlas of California (Beck and Haase) 1974 (atlas G 1526 S1 B4 1974)
- Historical Map and Chart Collection (US NOAA. Office of Coast Survey) Contains over 20,000 maps and charts from the late 1700s to present day. The collection includes US nautical charts, hydrographic surveys, topographic surveys, bathymetric maps, geodetic surveys, city plans and Civil War battle maps. Search by keyword, geographic area, type of map, date, or chart number.
- Indian Land Cessions in the United States: California 1 and California 2 (Royce) 1899. The entire collection contains all sixty-seven maps from Indian Land Cessions in the United States, complied by Charles C. Royce in 1899, and which appeared in the 18th Annual Report of the Bureau of American Ethnology, to the Secretary of the Smithsonian Institution, 1896-97, Part 2. (US Docs SI 2.1: 1896-97 Pt 2). The maps identify treaties by number. You must consult the Royce book to identify the specific treaty.
- Los Angeles County Historical Topographic Maps (California Geographic Survey) Contains very detailed .gif images of 39 1:24,000 scale topographic maps produced between 1924 and 1939 which document the cultural landscape of the period.
- Map of the Public Surveys in California and Nevada to Accompany Report of the Commissioner of the General Land Office 1866 (General Land Office) 1866. First large colored state map issued by the General Land Office that shows the progress of the public land survey in California.
- Map Images and Stories (California Map Society) Series of nine maps ranging from 1493 to 1849 that depict California, including California as an island. Each map is accompanied by a brief description.
- Maps of California Counties: 1850 to Present (California State Association of Counties) Series of six maps that show changes in counties by decade.
- Population History Maps of California Places, 1770 to 2000 (Berlo) 2000 (ref HB 3525 C2 B471 2000) Consists of approximately 1,000 maps that show the location and size of populated places in California at 10-year intervals from 1770 through 2000. A companion work is Population History of California Places (Berlo) 2000 (ref HB 3525 C2 B47 2000) that includes population figures for California places at 10-year intervals from 1846 to 2000; yearly intervals for early California places 1769 to 1850; and other population tables. Also includes a set of 50 maps showing all included place names.
- Sanborn Fire Insurance Maps - Starting in 1867 the Sanborn Map Company began the production of fire insurance maps that eventually covered 12,000 communities in the United States, Canada, and Mexico. These large scale maps, drawn at scales of 1"=50' and 1"=100', were created to assist fire insurance agents in determining the degree of risk associated with commercial, industrial, and residential property within a community. Shown on the maps are the "footprints" of individual buildings, including their dimensions, shape, height, location of doors and windows, building material, and uses; ethnicity of occupants (occasionally); and other property details and city improvements, including lot lines, street widths, fire hydrants, and other fire-fighting facilities. These maps frequently represent the most detailed information on historical urban land use and are used by scholars and professionals in history, geography, architecture, and environmental engineering. A key to map notations provided by the Sanborn Map Company is available. For additional background information on fire insurance maps see:
  - Sanborn Fire Insurance Maps (UC Berkeley Map Library) This is the introduction found in Fire Insurance Maps in the Library of Congress: A Checklist (Library of Congress. Geography and Map Division) 1981 (Docs LC 5.2:F51) that lists fire insurance maps found in the Library of Congress.
  - Fire Insurance Maps: Their History and Applications (Oswald) 1997 (HG 9771 O89 1997)
  The following California libraries contain extensive collections of microform, print, or digital Sanborn fire insurance maps that supplement HSU Library holdings for northwestern California. Indexes are available at each library to their California holdings.

Land Use and Ownership

California Federal Public Lands Responsibility Map (US Bureau of Land Management) 1978 (map G 4361 G5 1978 U51; also Docs I 53.11:C12/4) 1:750,000 scale map showing federal, state, and private land ownership in California. For 1:100,000 scale mapping of land ownership in California, see the Surface Management Status series (map G 3701 G5 3100 U5) and the map index to California maps.

California Rivers Assessment (CARA) (International Center for the Environment and California Resources Agency) For each of the 120 river basins in California five maps are available: hydrologic, vegetation, shaded relief, land ownership, and a 1:24,000 quad grid. Other nongraphic watershed statistics and information are also available. IceMaps2 provides interactive mapping capability.

California Wildland-Urban Interface Maps, Statistics, and GIS Data Download (University of Wisconsin--Madison Silvics Lab) Includes maps on housing density and the wildlife-urban interface using 2000 census block information, along with associated data and gis files.

Comprehensive Ocean Area Plan General Inventory (California Department of Navigation and Ocean Development) 1971 (Cal Doc N 540 C6p Pt.1 & Pt.2 folio) First major inventory of California's coastal zone prepared in support of the Comprehensive Ocean Area Plan. Two series, each with 127 maps at a scale of 1"=2,000 ft., map and classify California's coastal zone. Part 1: "Land Use/Site Characteristic Inventory" categorizes developed areas into 66 categories and undeveloped areas into 25 categories. Part II: "Land Ownership Inventory" delineates 30 categories of land ownership.

Land Ownership (California Department of Forestry and Fire Protection Fire and Resource Assessment Program) Series of five regional maps that show land ownership. Part of the California Land Cover Mapping and Monitoring Program (LCMMP) that is a collaborative effort of the US Forest Service and CDF.

Management Landscape (California Department of Forestry and Fire Protection Fire and Resource Assessment Program) Statewide map at a scale of 1:1 million classifies lands into eight predominant land uses.

National Wetlands Inventory (US Fish & Wildlife Service) (microfiche copies in Docs I 49.6/7-12) Series of maps at scales of 1:24,000 and 1:100,000 for the United States which classify wetlands into 55 different classes using the Classification of Wetlands and Deepwater Habitats of the United States (Cowardin) 1979 (print copy available in Docs I e49.89:79/31). National Wetlands Inventory Maps lists maps available for each state, including California. For additional information see Wetland Mapping and Inventory (US Geological Survey). Wetlands Mapper (US Fish & Wildlife Service) is an interactive mapper that allows one to view National Wetlands Inventory digital data as well as stream and road data. You can also view wetlands data layers with Google Earth.

Progression of Development (California Department of Forestry and Fire Protection Fire and Resource Assessment Program) 2000. Statewide map at a scale of 1:1 million that shows the historical progression of urban and suburban development by decade.

Public Ownership (California Department of Forestry and Fire Protection Fire and Resource Assessment Program) 2000. Statewide map at a scale of 1:1 million has shows public land ownership by agency.

Urban Development 1990-2002 and Important Farmland 2002 (California Department of Conservation) 2004. Map covers the upper San Joaquin Valley.

Natural Communities and Habitats

Bioregions (California Dept. of Forestry and Fire Protection, Fire and Resource Assessment Program) Statewide map of bioregion boundaries.
California, An Environmental Atlas & Guide (Kreissman) 1991 (ref F 859 K74 1991) Collection of mostly state base maps that show boundaries, management areas, and facilities for federal and state agencies, universities, private organizations, and major physiographic and ecological features. Also has a directory of federal, state, and major private environmental agencies.
California Digital Conservation Atlas (California Resources Agency) Interactive mapper brings together natural resource and planning data from a variety of local, state, and national sources, and allows users to view one or more information layers at varying scales for creating custom maps. Included are approximately 100 data layers in 12 thematic and base categories, including environmental hazards, plans, biodiversity, demographics, roads, jurisdictions, hydrology, land ownership, and land use/cover. The Atlas is designed to provide natural resource information in a regional and statewide context. The data sets are not appropriate for viewing at map scales finer than 1:24,000. One can zoom by to a specific location using the interactive mapper; geographic, UTM or PLSS coordinates; or placename. Maps created can be printed and the associated data can be downloaded for gis use.
California Ecoregion Browser (California Information Node) Interactive map that displays and identifies USFS ecological subregions. Other base layers are also available for display. See Ecological Subregions of California for further information.
California Environmental Resources Evaluation System (CERES) (California Resources Agency) "Environmental Information by Geographic Area" includes links to "Maps and Spatial Data" by bioregion, watershed, or county; and the "By Data Type" includes "Cartographic Works".
California Natural Diversity Database (CNDDB) Quick Viewer (California Department of Fish and Game) Interactive mapper that lists all CNDDB species or natural communities that have been documented by the CNDDB to occur within a USGS 1:24,000 topographic quad. This list may include both recent and historical records.
California Vegetation/Wildlife Habitat Regions (Easter) Classified into 21 classes.
California Watershed Browser (California Watershed Council) Users can navigate through a map of California's watersheds based on the CalWater geographic dataset. Once an area of interest is identified, one can retrieve digital orthophoto quads; scanned USGS map sheets for the area; watershed projects from the Natural Resources Project database; and a list of rare species and natural communities inventoried by Fish and Game’s Natural Diversity Data Base.
Ecological Subregions of California (US Forest Service) Includes maps and descriptions of 19 ecological sections and each of their subsections. A separate print map is also available-- Ecological Units of California: Subsections (U.S. Forest Service) 1994 (map G 4361 D1 1994 U55)
GAP Analysis of Mainland California: An Interactive Atlas of Terrestrial Biodiversity and Land Management (California GAP Analysis Project) 1995 (Atlas QH 76.5 C2 C34 1995) Provides an assessment of the conservation status of native vertebrate species and natural land cover types in California. Uses medium-scale distribution maps to show 300 dominant plant species, 200 plant communities, predicted distribution of 455 terrestrial wildlife species, 58 wildlife habitat types, and land ownership and management status. Will also display a list of rare or endangered species in a selected 1:24,000 USGS quadrangle. The interactive atlas allows one to make queries, displays, and analyses. Data can be downloaded in Arc/Info export format for use in a local GIS system. Data is available in statewide datasets or in subsets by ecological region. For additional information or to download GIS coverages directly from the Internet see the California GAP Analysis Home Page.
Initial Assessment of the Health and Condition of California's Lands and Natural Resources (California Resources Agency) Includes an extensive collection of supporting maps.
Jepson Regions of California (California Gap Analysis Project)
Land Cover: Multi-Source Data Compiled for the Forest and Range 2003 Assessment (California Department of Forestry and Fire Protection) 2003. Statewide map of 13 land cover classes, aggregated from California Wildlife Habitat Relationships classes
Level III Ecoregions of California (U.S. Environmental Protection Agency National Health and Environmental Effects Research Laboratory) Derived from the 1987 map by Omernik. Includes the descriptions of each Level III ecoregion that can be identified through the analysis of the patterns and composition of its biotic and abiotic phenomena (geology, physiography, vegetation, climate, soils, land use, wildlife, and hydrology).
National Wetlands Inventory (US Fish & Wildlife Service) (microfiche copies in Docs I 49.6/7-12; print copies for Humboldt and Del Norte County available in the Humboldt Room Map Case) Series of maps at scales of 1:24,000 and 1:100,000 for the United States which classify wetlands into 55 different classes using Classification of Wetlands and Deepwater Habitats of the United States (Cowardin) 1979 (print copy available in Docs I e49.89:79/31). National Wetlands Inventory Maps lists maps available for each state, including California. For additional information see Wetland Mapping and Inventory (US Geological Survey). Wetlands Interactive Mapper Tool (US Fish & Wildlife Service) is an interactive mapper that allows one to view National Wetlands Inventory digital data as well as stream and road data. Also includes a link to the Microsoft TerraServer which allows one to view an aerial photograph or topographic map of the same area being viewed.
Wildlife Habitats - California Wildlife Habitat Relationships System (California Department of Fish and Game ) Includes a distribtion map for each of the 59 wildlife habitat types used in the California Wildlife Habitat Relationships System.
Wildlife Habitats of California (California Department of Fish and Game) Classifies wildlife habitats using the California Wildlife Habitat Relationships System (CWHS) habitat classification system.
Wildlife Habitats: Multi-Source Land Cover Data (California Department of Forestry and Fire Protection) 2004. Statewide map of 13 land cover classes compiled for the Forest and Range 2002 Assessment using California Wildlife Habitat Relationships System habitats.
Wildlife Habitats: Gap Analysis Program (California Department of Forestry and Fire Protection Fire and Resource Assessement Program) 2001. Statewide map of California at a scale of 1:1 million that classifies wildlife habitats using the California Wildlife Habitat Relationships System (CWHS) habitat classification system.

Natural Hazards

Includes earthquake, fire, and flood maps.

Guides and Indexes
- Index to Landslide Maps in California (California Geological Survey) Lists by county landslide maps produced in several ongoing series--landslide hazard identification maps, watersheds maps, geology for planning maps, regional geologic maps and seismic hazard zone maps.
Maps and Atlases
- Assessment and Atlas of Shoreline Erosion Along the California Coast (California Department of Navigation and Ocean Development) 1977 (Cal Docs N 540 S36) Includes an atlas section of 129 maps at a scale of 1:40,000 which classifies California's shoreline into six shoreline conditions.
- California Volcanics-Maps and Graphics (USGS Cascades Volcano Observatory) Collection of maps showing distribution of volcanoes in the Cascade Range and in California.
- California/Nevada Seismic Hazard Maps (US Geological Survey. National Seismic Hazard Mapping Project) Series of statewide seismic hazard maps that show probabilities of exceedance for peak ground accelerations and spectral acceleration.
- Earthquake Fault Zone Maps (formerly Special Studies Zone Maps) (California Divison of Mines and Geology) (print maps for northwestern California are located in the Humboldt County Collection Map Case; for the rest of California see Digital Images of Official Maps of Alquist-Priolo Earthquake Fault Zones of California, a series of three cd-roms that contain Earthquake Fault Zone Maps for the entire state (Cal Docs C 810 A57)) Series of maps at a scale of 1:24,000 showing regulatory zones around surface traces of active faults in California. Produced under the authority of the Alquist-Priolo Earthquake Fault Zoning Act, they are used in planning and controlling of construction in these zones.. Fault-Rupture Hazard Zones in California (CDMG Special Publication #42) (print copy available in Cal Docs C 810 S59) contains a detailed description of the mapping program and an index to available maps. The Alquist-Priolo Earthquake Fault Zones also provides background material and an Index to Official Maps of Earthquake Fault Zones.
- Earthquake Hazards of California (US Geological Survey) Series of three fault maps of California with links to other information sources.
- Earthquake Shaking Potential in California (California Seismic Safety Commission) 2003. Shows the relative intensity of ground shaking and damage in California from anticipated future earthquakes.
- Earthquakes in California and Nevada (Goter) 1994 (USGS Open-file Report #94-647) (map G 4361 C55 1994 G6) 1:1 million scale map showing earthquake epicenters from 1836 to 1994 on a Raven base map.
- Epicenters of and Areas Damaged by M>5 California Earthquakes, 1800-1999 (California Geological Survey) 2000 (Map Sheet 49) (Print copy available in Cal Docs C 810 M32 #49)
- Fault Activity Map of California and Adjacent Areas, with Locations and Ages of Recent Volcanic Eruptions (Jennings) 1994 (California Geologic Data Map #6) (Cal Docs C810 G4d #6) 1:750,000-scale map of faulting in California classified and color-coded in a six-fold system. An Explanatory Text to Accompany the 1:750,000 Fault and Geologic Maps of California (Cal Doc C 810 B9 #201) gives background information, list of faults, list of thermal springs and wells, and literature used in compilation of the map. Updates the Fault Map of California, with Locations of Volcanoes, Thermal Springs and Thermal Wells (Jennings) 1975 (California Geologic Data Map #1) (map G 4361 C55 1975 C1; also Cal Doc C 810 G4d #1).
- Faults of Southern California (Southern California Earthquake Data Center) Clickable map of southern California that will take you to an enlarged relief map of six different regions with local faults highlighted in a variety of colors, and linked to pages detailing information about these faults.
- Fire Hazard Severity Zones (California Department of Forestry and Fire Protection Fire and Resource Assessment Program) 2001. Statewide map at a scale of 1:1 million that shows fire hazard serverity zones for State Responsibility Area (SRA) lands.
- Fire Threat (California Department of Forestry and Fire Protection Fire and Resource Assessment Program) 2003. Statewide map of fire threat that uses a four-class rating system that is derived from a combination of fire frequency (how often an area burns), and expected fire behavior under severe weather condtions. Fire frequency is derived from 50 years of fire history data. Fire behavior is derived from fuels and terrain data.
- Geology and Geomorphic Features Related to Landsliding (California Division of Mines and Geology and California Department of Forestry and Fire Protection) Using USGS 1:24,000 quadrangles as a base this series provides detailed mapping of the geology and geomorphic features affecting landslide potential, soil erosion, and streambank erosion in sensitive watersheds mainly in Mendocino, Humboldt, and Del Norte Counties of California.
  - North Coast Watersheds Mapping (Cal Docs C 810 O63 various numbers and Humboldt County Collection map files; cd-rom version containing both pdf and GIS files is available in Cal Docs C810 W39) Set of 60 quadrangles produced between 1982-1985. CGS/CDF Watersheds Mapping includes a description and index to these maps The pdf versions contain two layers--"Geologic Features Map" and "Geomorphic Features Map".
  - Forest and Watershed Geology Program - Maps and GIS Data Includes additional geological, landslide and landslide potential mapping organized by watershed and which is available on cd-rom or by download. Includes both pdf and gis files.
    - Noyo River (cd-rom available in CalDocs C810 N69cd)
    - Freshwater Creek (cd-rom available in G 4363 H8 F35 2002 Hum Co Coll)
    - Elk River (cd-rom available in GB 991 C2 M37 2005 Hum Co Coll)
    - Gualala River
    - Redwood Creek
    - Mattole River
    - Albion River
    - Big River
- Historic Earthquakes in Southern California (Southern California Earthquake Data Center) Clickable map of southern California, with epicenters of historic earthquakes as far back as 1812. Earthquakes are plotted over the background topography. Contains reports for each earthquake.
- Index Map of Recent Earthquakes in California and Nevada (US Geological Survey) Maps earthquakes occuring in California during the last hour, last day, and last week. Clickable map allows one to zoom for more detail. Includes links to special maps for Long Valley, Los Angeles, and San Francisco.
- Interactive Fault Parameter Map of California (California Geological Survey) 2002. Click on a fault or area of interest for fault characteristics.
- Landside Hazards of California (US Geological Survey) Includes map of California's Landslide Hazards and links to other information sources.
- Major Earthquakes and Fault Zones of California (Masse and Dewey) 1996 (map G 4361 C55 1996 M3)
- Map Showing Areas of Estimated Relative Amounts of Landslides in California (Radbruch and Crowther) 1973 (USGS Miscellaneous Geologic Investigations Map I-747) (Docs I 19.91: 747) 1:1 million scale map showing the estimated relative proportion of area covered by landslides within delineated bedrock and surficial units.
- Maps of Known Active Fault Near-Source Zones in California and Adjacent Portions of Nevada to be Used with the 1997 Uniform Building Code (California Division of Mines and Geology) 1998 (atlas G 1526 C55 M3 1998) Maps identify the locations of known active fault near-source zones in California that are used in the implementation of the UBC.
- Natural Hazard Disclosure Maps (California Department of Forestry and Fire Protection) Series of California county maps that show the two types of fire hazard areas referenced in California legislation as disclosure items in real estate transactions. This includes Very High Fire Hazard Severity Zones (VHFHSZ) in Local Responsibility Areas (LRA) and Wildland Areas That May Contain Substantial Forest Fire Risks and Hazards in State Responsibility Areas (SRA). County map images can be viewed online as .pdf files or downloaded as ArcView shapefiles.
- Patterns on the Land: Geology (Golden State Museum) Series of maps that show locations from California earthquakes from 1769 to 2000.
- Probabilistic Seismic Hazard Map of California (California Geological Survey) Series of maps for every 1 degree by 2 degree quadrangle in California showing contours of probabilistic ground shaking (Peak Ground Acceleration [PGA], 10% probability of being exceeded in 50 years, assuming a uniform soft rock site condition).
- Quaternary Faults and Fold Database of the United States: California (US Geological Survey) Contains information on faults and associated folds in California that are believed to be sources of M>6 earthquakes during the Quaternary (the past 1,600,000 years). Maps of these geologic structures are linked to individual descriptions and references for each structure. Search using a map-based interface that divides the state into 1 x 2 degree quadrangles.
- River Stage Maps from National Weather Service/California Nevada River Forecast Center (California Department of Water Resources - California Data Exchange Center) Contains regional maps showing river stages and discharge levels at selected gaging sites during three time intervals: current hour, 1 hour ago, and 2 hours ago.
- Seismic Hazard Zone Maps (California Division of Mines and Geology) Series of maps at a scale of 1:24,000 covering urban areas of California that chart areas prone to liquifaction (failure of water saturated soil) and earthquake-induced landslides . Prepared under the authority of the Seismic Hazards Act of 1990, they are used by cities and counties to regulate development. The Seismic Hazard Mapping Program Home Page includes information about the program, an interactive mapper, accompanying evaluation reports and downloadable gis files.
- Seismic Shaking Hazard Maps of California (Petersen, et al) 1999 (Cal Doc C810 M32 #48) (Map Sheet #48) Includes seven maps on a single sheet: Historic earthquakes (1800-1994) with magnitudes 5 or greater -- Spectral acceleration for 0.3-second period (high frequency) -- Areas damaged by historic earthquakes (1800-1998) -- Spectral acceleration for 1.0-second period (low frequency) -- Slip rates of major active faults -- Preliminary surface geologic materials--Peak ground acceleration 10% probability of being exceeded in a 50 year period.
- Seismicity of California, 1808-1987 (Goter) 1988 (map G 4361 C55 1987 G4) State map at a scale of 1:1,000,000 that shows epicenters by magnitudes and age.
- ShakeMap (TriNet ShakeMap Working Group) Representations of ground shaking produced by moderate and large California earthquakes. Automatically generated maps show instrumental intensity, peak ground acceleration, peak ground velocity, and spectral response.
- Simplified Fault Activity Map of California (Jennings and Saucedo) 2002 (Cal Doc C810 M32 #54 (Map Sheet #54) Significant earthquakes and fault reputures plotted on map.
- 24-Hour Aftershock Forecast Map (US Geological Survey Earthquake Hazards Program) Updated daily, this map shows the probability of strong earthquake shaking (with a Modified Mercalli Intensity of VI or greater) in the next 24 hours. The probability is calculated, based upon the known behavior of aftershocks and the possible shaking pattern predicted from historical patterns on the fault or in the area. The system considers all earthquakes, large and small, that are recorded by the California Integrated Seismic Network (CISN). These probabilities apply both to aftershocks smaller than the first event and to the possibility that the "aftershock" will, in fact, be larger than the first event – in which case it becomes a "foreshock."
- Volcano Hazards of California (US Geological Survey) Includes Volcanoes and Volcanic Areas Map of California , Aerial distribution of 4 Upper Quaternary Tephra Layers over the Western United States map and links to other information sources.
- WaterWatch--Current Water Resources Conditions: California(US Geological Survey) Series of maps that graphically show streamflow conditions in California. Maps are updated daily or more frequently. Individual maps show real-time streamflow compared to historical streamflow, flood and high flow conditions, daily streamflow compared to historical streamflow, 7-day average streamflow compared to historical streamflow, below normal 7-day average streamflow compared to historical streamflow, and drought watch. Mouse-over any of the 200+ recording sites to get detailed site information.
- Weekly Seismicity Maps (Berkeley Seismological Lab) Contains general seismicity maps for Northern California and more detailed maps for seismically active locations in California. Includes annual maps from 1998 to the present; and, for the current year, maps for the current week, month, and year-to-date. Maps are updated every Friday.

Outline

California (Nationalatlas.gov) Outline map showing California county boundaries and names.

California County Map (Calflora)

California Outline Map (Maps.com) Ouline map showing major cities and rivers.

California Patterns: A Geographical and Historical Atlas (Hornbeck) 1983 (atlas G 1525 H6 1983) Appendices contain several reproducible outline maps of California.

California's Regions (Houghton Mifflin)

Counties (California Voter Foundation)

Counties (Perry-Castaneda Map Library) Image of US Bureau of the Census 1990 California County Outline Map.

Draw What You Want On California Map (US Geological Survey) Outline map only has California border.

Free Blank Outline Map of California (About.com Guide to Geography)

ICEMAPS2 (Interactive California Environmental Management, Assessment, and Planning System) (International Center for the Environment) Interactive mapper that allows users to pan and zoom to a specific geographic area and display one or more layers from 30 datasets. One can also query the database and display information about all currently displayed map layers.

National Digital Map Library (University of Virginia Geospatial and Statistical Data Center) For California (and other states) includes the following outline pdf maps--state boundary, county boundary, major cities, hydrography, and national parks and forests.

National Geographic Xpeditions Atlas: California (National Geographic Society)