AndreaBozzo/ceres-open-data-index huggingface dataset:
Vegetation - Lassen Foothills [ds564]

The Tehama County Resource Conservation District contracted with the California Native Plant Society (CNPS) and Aerial Information Systems (AIS) to produce a fine-scale, spatially and floristically accurate vegetation map of the Lassen Foothills project area. This area encompasses a 108,400 acre portion of eastern Tehama County and covers three large parcels: South Denny Ranch, Tehama Wildlife Area, and Dye Creek Preserve. The project area represents a biologically diverse mix of vegetation types including grasslands, riparian, foothill chaparral, and oak woodlands. Vegetation resources were assessed through new and previous field surveys, classification analysis of 35 vegetation alliances, and mapping of 37 vegetation map units. To validate the vegetation map, an accuracy assessment with field verification was conducted by CNPS field staff. The minimum mapping unit (MMU) for the study area is approximately 1/2 hectare. Small wetlands were delineated in many incidences below the MMU. The 1/2 hectare MMU applied for all floristic and structural breaks as required by the contract. More information can be found in the project report, which is bundled with the vegetation map published for BIOS here: [https://filelib.wildlife.ca.gov/Public/BDB/GIS/BIOS/Public_Datasets/500_599/ds564.zip]
CGS Alquist Priolo Fault Zones

This data set contains the Alquist-Priolo Earthquake Fault Zones as shown on the Official Alquist-Priolo Earthquake Fault Zones Maps. The dataset is comprised of polygons that form regulatory zone boundaries (Alquist-Priolo Earthquake Fault Zones). These features delineate areas where surface fault rupture previously has occurred, or where local topographic, geological, and geotechnical conditions indicate a potential for permanent ground displacements such that mitigation by avoidance as stated in Public Resources Code Section 2621.5 would be required.
CGS Landslide Zones

This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a strong earthquake. Three types of geological hazards, referred to as seismic hazard zones, may be featured on the map: 1) liquefaction, 2) earthquake-induced landslides, and 3) overlapping liquefaction and earthquake-induced landslides. In addition, a fourth feature may be included representing areas not evaluated for liquefaction or earthquake-induced landslides. Developers of properties falling within any of the three zones may be required to investigate the potential hazard and mitigate its threat during the local permitting process.
CGS SHZ Unevaluated Areas

This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a strong earthquake. Three types of geological hazards, referred to as seismic hazard zones, may be featured on the map: 1) liquefaction, 2) earthquake-induced landslides, and 3) overlapping liquefaction and earthquake-induced landslides. In addition, a fourth feature may be included representing areas not evaluated for liquefaction or earthquake-induced landslides. Developers of properties falling within any of the three zones may be required to investigate the potential hazard and mitigate its threat during the local permitting process.
Earthquake Zones of Required Investigation Maps and Reports

The Alquist-Priolo Earthquake Fault Zoning Act (1972) and the Seismic Hazards Mapping Act (1990) direct the State Geologist to delineate regulatory "Zones of Required Investigation" to reduce the threat to public health and safety and to minimize the loss of life and property posed by earthquake-triggered ground failures. Cities and counties affected by the zones must regulate certain development "projects" within them. These Acts also require sellers of real property (and their agents) within a mapped hazard zone to disclose at the time of sale that the property lies within such a zone. Fault Evaluation Reports are available for those areas covered by a Regulatory Map however there are reports available for areas outside the Regulatory map boundary. For a complete set of maps available for purchase on CD please contact the CGS Library.
Regional Transportation Planning Agencies

The RTPA polygon feature class provides California Regional Transportation Planning Agencies (RTPA) legislative boundaries, primarily for regional planning applications. The list of California RegionalTransportation Planning Agencies is current as of February, 2014, provided by Division of Transportation Planning, Office of Regional and Interagency Planning. With the exception of Tahoe Regional Planning Agency (TRPA*), all of the RTPA boundaries follow county boundaries, some RTPA are multi-county. This feature class was created primarily based on 2010 Census county lines exclude the islands. *TRPA is actually a bi-state agency created by the U.S. Congress and a compact between California and Nevada. Federal laws and California and Nevada statutes govern it. TRPA is composed of parts of two counties in California, El Dorado and Placer, and two counties in Nevada. The portions of two California counties outside the Tahoe basin are part of the Sacramento Area Council of Governments (SACOG). Reference: CALCOG GUIDE TO REGIONAL PLANNING, AS REVISED BY SB 375 JANUARY 2009.
Vegetation - Whiskeytown National Recreation Area Vegetation Mapping Project [ds986]

This work was done by Humboldt State University Sponsored Programs. The vegetation map adheres to the 2008 National Vegetation Classification Standard (NVCS) and the Manual of California Vegetation (MCV) around 42,000 acres of the NRA land. The Association-Alliance map offers maximum classification detail with 38 classes (31 plant associations, 5 alliances, 1 Disturbed class and a Barren class), with the minimum mapping unit being 0.5 hectares. Three source images were acquired by the Ikonos satellite on July 25, 2003 and used a spatial pattern recognition software package called Feature Analyst (Visual Learning Systems 2006) to identify groups of pixels associated with various vegetation categories. The previously developed, vegetation classification at Whiskeytown National Recreation Area served as the basis for making the vegetation map. More information can be found in the project report, found here: https://nrm.dfg.ca.gov/FileHandler.ashx?DocumentID=16313
2020 Adjusted Urban Area

Caltrans is responsible for the decennial production of the Adjusted Urban Area Boundaries for the State of California. The CA 2020 adjusted urban area file represents the current Federal Highway Administration (FHWA) approved Caltrans adjusted urban area boundaries. The Urban Area Boundaries are separated into two classifications based on population: * Small Urban Areas: population ranging from 5,000 to 49,999 * Urbanized Areas: population of 50,000 or more According to Title 23 U.S.C. 101(a)(35) and (36), Small Urban and Urbanized Area boundaries are to be adjusted in cooperation by responsible State and local officials, and subject to approval by the Secretary of Transportation. Adjustments may include the addition of significant transportation corridors and areas of growing urbanization.
Automated Weather Observation System

This layer was created from the California Aviation System Plan list of Automated Weather Observation Systems. The upgrades and distribution of Automated Weather Observing Systems (AWOS) Automated Surface Observation Systems (ASOS), and Automated Terminal Information Services (ATIS) in California are a critical part of the State aviation system. Access to localized weather conditions benefit both commercial and General Aviation (GA) operations. Caltrans Division of Aeronautics (Division) is monitoring the expansion and updating of the system with a focus on bringing more of this technology to key airports thereby improving air safety. Also, as AWOS/ASOS technology improves, the use of the hardware for shared uses, such as monitoring remote highways concurrently with remote airports is seen as an essential safety measure for normal as well as emergency response operations. The State is currently researching a cooperative approach to improving the road and aviation automated weather reporting system to support multimodal safety statewide. The expansion of the system through Public Private Partnerships (P3) is also becoming a topic of increasing interest as data and cost sharing strategies among various users becomes more desired, available and practical. Automated Weather Observation System (AWOS) AWOS is a computer-generated voice which is used to automate the broadcast of the minute-by-minute weather observations. Automated Surface Observation System (ASOS) The ASOS is the primary surface weather observing system of the United States. Automatic Terminal Information Service (ATIS) This the continuous broadcast of recorded non-control information which converts selected meteorological data and air traffic control data into human speech.
California Metropolitan Planning Organization (MPO)

This dataset contains the geographic boundaries of Metropolitan Planning Organizations (MPO) and is intended for metropolitan area multimodal transportation planning applications. MPOs designate the federally mandated and federally funded transportation policy-making organization in the United States. This dataset is for California only and is maintained by the Bureau of Transportation Statistics (BTS), but it has been modified by Caltrans to conform to the California County Boundary dataset. MPO organizations include representatives from local government and governmental transportation authorities and they carry out the metropolitan transportation planning process in that area.
Commercial Vehicle Enforcement Facilities

A Commercial Vehicle Enforcement Facility (CVEF) commonly called a Weigh Station (WS) is a checkpoint typically located directly off the State highways where the California Highway Patrol (CHP) inspects the weight of trucks and commercial vehicles. the presence of CVEFs is to ensure that the roads are not compromised by potentially overweight vehicles, thus prolonging the useful life of the highway and improving the safety of the traveling public. CVEFs are equipped with truck static scales and/or Weigh-in-Motion (WIM) scales to weigh trucks and commercial vehicles. Static scales require the trucks to stop, whereas WIM scales permit the trucks to continue moving while being weighed. [Commercial Vehicle Enforcement Facility (CVEF) Page]
Express Lanes

The California HOV/Express Lane Business Plan is a framework for Caltrans and its partners to focus statewide activity during 2009-2011 that will lead the state to easily implement more flexible and effective system management strategies for HOV and Express Lane, also known as High Occupancy Tolling (HOT) or Managed Lane. The ultimate vision is a transportation system offering new commute choices and more reliable travel through congested corridors; where congestion is managed and the availability of an express service option is greatly improved, and where governments at all levels work together to manage demand with effective monitoring and adjustment of operations and design. In this Business Plan, Caltrans, regional transportation agencies, FHWA and the CHP, have developed a coordinated framework to guide the current and future development and operation of HOV and Express Lane throughout the state, capitalizing on strong partnerships and operating strategies already in place.The locations of the HOV/Express lanes are based on postmiles derived from an excel spreadsheet maintained by Caltrans, Division of Traffic Operations, Office of Traffic Management.Express Lanes Page
Highway Rail Crossing

The PUC data contains a [grade] attribute that allows for the isolation of at-grade crossings. There are 10,478 at-grade records in the most recent PUC file available. The PUC data also includes a crossing numbering system that should be maintained as part of the development of this feature to facilitate easy update and linkage to subsequent releases. There are over 14,000 open crossings included in the state inventory as of December 2020. The fields included in this table are copied directly from the CPUC data set without any changes. Version of 12/29/2020 - INCLUDES ONLY RECORDS WITH 'Crossing Status' = Open AND Latitude/Longitude coordinates are not blank. This list is provided as of October 28, 2020 for information only. The information may contain some inaccuracies. Comments may be sent to RCEB@cpuc.ca.gov with Subject: CPUC Rail Crossing List.
White-winged Dove Range - CWHR B254 [ds1516]

Vector datasets of CWHR range maps are one component of California Wildlife Habitat Relationships (CWHR), a comprehensive information system and predictive model for California's wildlife. The CWHR System was developed to support habitat conservation and management, land use planning, impact assessment, education, and research involving terrestrial vertebrates in California. CWHR contains information on life history, management status, geographic distribution, and habitat relationships for wildlife species known to occur regularly in California. Range maps represent the maximum, current geographic extent of each species within California. They were originally delineated at a scale of 1:5,000,000 by species-level experts and have gradually been revised at a scale of 1:1,000,000. For more information about CWHR, visit the CWHR webpage ([https://www.wildlife.ca.gov/Data/CWHR]). The webpage provides links to download CWHR data and user documents such as a look up table of available range maps including species code, species name, and range map revision history; a full set of CWHR GIS data; .pdf files of each range map or species life history accounts; and a User Guide.
Rail Lines BNSF, UPRR

The objective is to delineate potential crude by rail routes across California, focusing on a subset of the Caltrans "California Rail Network" dataset. Specifically, this subset comprises Union Pacific Railroad (UPRR) and Burlington Northern Santa Fe (BNSF) routes, the primary carriers for crude by rail in the state. For the original dataset, please refer to the [Caltrans GIS Data Hub] web page. The purpose of the data is to depict the rail network by utilizing available reference data and information from the California Region Timetable 20. Within the Rail feature class, alignment details for passenger and freight railroad lines are included, encompassing commuter rail and heavy rail. This feature class facilitates the selection of various rail alignments in California, covering passenger, commuter, recreational, freight, and shortline rail, excluding BART.
CalEnviroScreen 4.0 Results

The Office of Environmental Health Hazard Assessment (OEHHA) announces the availability of a new version of the California Communities Environmental Health Screening Tool: CalEnviroScreen 4.0. CalEnviroScreen is a screening methodology that can be used to help identify California communities that are disproportionately burdened by multiple sources of pollution.The[ CalEnviroScreen 4.0 results ]are available as a mapping tool. [Maps of the CalEnviroScreen 4.0 Indicators ]are also available. This version updates CalEnviroScreen in a variety of ways: * All indicators contain the most recent available data. * There are improvements in the way some indicators are calculated to better reflect environmental conditions or population vulnerability to pollution. * One new indicator, [Children’s Lead Risk from Housing], accounts for possible lead exposure from paint and other sources in or around the home.
NEVI 3 Needed Locations (November 3 2025)

The CEC has divided the federally-designated Alternative Fuel Corridors (AFCs) into twenty-three (23) Corridor Groups for the purpose of making NEVI formula funding available. The Corridor Groups are further divided into Corridor Segments, which are labeled A, B, C, etc. The Needed Locations are shorter sections within each Corridor Segment that are labeled i, ii, iii, etc. Data Dictionary: * Corridor Segment - A portion of a highway corridor. * Corridor Group - A group of one or more corridor segments. * Alternative Fuel Corridor - The U.S. Department of Transportation Federal Highway Administration (FHWA) designates a national network of plug-in electric vehicle (EV) charging and hydrogen, propane, and natural gas fueling infrastructure along national highway system corridors. To designate these Alternative Fuel Corridors (AFC), FHWA solicits nominations from state and local officials and works with other federal officials and industry stakeholders. * Needed Locations - A section of a Corridor Segment, as defined for the NEVI formula program, where an EV charging station is needed to satisfy build-out of the Alternative Fuel Corridor. * Description: The description of the start and end points of the Needed Location.
Vegetation (MCV / NVCS) Mapping Projects - California [ds515]

This metadata layer shows the footprint of vegetation mapping projects completed in California that have used the Manual California of Vegetation (MCV 1st edition) or the National Vegatation Classification Standards (MCV 2nd edition/online) as a basis for vegetation classification. It provides basic information about each project. It is current as of December 2025. A second dataset, Vegetation (MCV / NVCS) Sampling Projects - California [ds3103], shows information about sampling-only project areas that currently have no mapping projects associated with them.
Chronic Wasting Disease Positive Detections - 2024-2025 - CDFW [ds3183]

The California Department of Fish and Wildlife (CDFW) has detected Chronic Wasting Disease (CWD) within the state and is working diligently to monitor and manage the presence of the disease within the state’s wildlife populations. Surveillance methods include targeted testing of harvested animals, monitoring of roadkill, and mandatory reporting of sick or unusual-looking animals. Updates will be uploaded as soon as they are available. This data is associated with the following layers: * Chronic Wasting Disease Sampling Stations - 2025 - CDFW [ds3154] ([https://apps.wildlife.ca.gov/bios6/?al=3154]), * Participating Meat Processors and Taxidermists - 2025 - CDFW [ds3155] ([https://apps.wildlife.ca.gov/bios6/?al=3155]), * Chronic Wasting Disease Sampling Stations - 2023-2024 - CDFW [ds3182] ([https://apps.wildlife.ca.gov/bios6/?al=3182]), * Participating Meat Processors and Taxidermists - 2023-2024 - CDFW [ds3188] ([https://apps.wildlife.ca.gov/bios6/?al=3188]), * Approved Deer Carcass Disposal Sites - CDFW [ds3156] ([https://apps.wildlife.ca.gov/bios6/?al=3156]). These layers include CWD Testing Sites, Participating Meat Processors and Taxidermists (MPT), Carcass Disposal Sites, and comprehensive data on CWD surveillance spanning from 1999 to 2025. This compilation of layers provides a comprehensive view of CWD-related activities, facilitating informed decision-making and strategic planning for wildlife management and disease prevention efforts. For more information please visit: [https://wildlife.ca.gov/CWD].
Golden Eagle Range - CWHR B126 [ds960]

CWHR species range datasets represent the maximum current geographic extent of each species within California. Ranges were originally delineated at a scale of 1:5,000,000 by species-level experts more than 30 years ago and have gradually been revised at a scale of 1:1,000,000. Species occurrence data are used in defining species ranges, but range polygons may extend beyond the limits of extant occurrence data for a particular species. When drawing range boundaries, CDFW seeks to err on the side of commission rather than omission. This means that CDFW may include areas within a range based on expert knowledge or other available information, despite an absence of confirmed occurrences, which may be due to a lack of survey effort. The degree to which a range polygon is extended beyond occurrence data will vary among species, depending upon each species’ vagility, dispersal patterns, and other ecological and life history factors. The boundary line of a range polygon is drawn with consideration of these factors and is aligned with standardized boundaries including watersheds (NHD), ecoregions (USDA), or other ecologically meaningful delineations such as elevation contour lines. While CWHR ranges are meant to represent the current range, once an area has been designated as part of a species’ range in CWHR, it will remain part of the range even if there have been no documented occurrences within recent decades. An area is not removed from the range polygon unless experts indicate that it has not been occupied for a number of years after repeated surveys or is deemed no longer suitable and unlikely to be recolonized. It is important to note that range polygons typically contain areas in which a species is not expected to be found due to the patchy configuration of suitable habitat within a species’ range. In this regard, range polygons are coarse generalizations of where a species may be found. This data is available for download from the CDFW website: [https://www.wildlife.ca.gov/Data/CWHR]. The following data sources were collated for the purposes of range mapping and species habitat modeling by RADMAP. Each focal taxon’s location data was extracted (when applicable) from the following list of sources. BIOS datasets are bracketed with their “ds” numbers and can be located on CDFW’s BIOS viewer: [https://wildlife.ca.gov/Data/BIOS]. * California Natural Diversity Database, * Terrestrial Species Monitoring [ds2826], * North American Bat Monitoring Data Portal, * VertNet, * Breeding Bird Survey, * Wildlife Insights, * eBird, * iNaturalist, * other available CDFW or partner data.