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The Environmental Justice Screening Method (EJSM) was developed for Los Angeles County by staff at USC PERE / Occidental College who are experts in the field of Environmental Justice, who were also instrumental in helping develop CalEnviroScreen (an industry standard Environmental Justice analysis for the State of CA). This […] This layer delineates ridgelines within selected CSDs whereupon restrictions are established for grading and ridgeline development. For more information on specific CSDs where these ridgelines reside, click here. Last updated 2/4/19 for an annexation to the City of Santa Clarita. Data can be downloaded here: […] Significant Ecological Areas (SEA) Significant Ecological Area (SEA) means an area that is determined to possess an example of biotic resources that cumulatively represent biological diversity for the purposes of protecting biotic diversity, as part of the Los Angeles County general plan or the city’s general plan. Additional regulations shall be applied based on In January 2017, The California Office of Environmental Health Hazard Assessment (OEHHA), on behalf of the California Environmental Protection Agency (CalEPA) released the latest version of CalEnviroScreen. Below is a brief description from their website. On their website you will be able to view the data with interactive maps, read the report in […] These are the main layers that were used in the mapping and analysis for the Santa Monica Mountains Local Coastal Plan, which was adopted by the Board of Supervisors on August 26, 2014, and certified by the California Coastal Commission on October 10, 2014. Below are some links to important documents and web mapping applications, […] The National Agriculture Imagery Program (NAIP) is a program to acquire peak growing season “leaf on” imagery, and deliver this imagery to USDA County Service Centers, in order to maintain the common land unit (CLU) boundaries and assist with farm programs. This data is different from our LARIAC imagery because it contains a 4th […] This dataset contains the locations for Los Angeles County as noted by the US Board of Geographic Names. It is called the Geographic Names Information System (GNIS), and is the official dataset of all locations and names as recognized by the federal government. These are points that are shown on USGS Topographic Quad […] These are the Sensitive Environmental Resource Areas (SERAs) identified in the Santa Monica Mountains Local Coastal Program (SMMLCP), which was certified by the California Coastal Commission on October 10, 2014 (a link to the resolution is here). Also known as Biological Resources in the SMMLCP. Detailed descriptions of each of the habitat […] // The LA County Sanitation Districts are a partnership of 24 independent special districts that serve the wastewater and solid waste management needs of approximately 5.5 million people in Los Angeles County (County). The Sanitation Districts’ service area covers approximately 824 square miles and encompasses 78 cities and unincorporated territory within the County. […] This dataset contains tree locations and information from 26 parks managed by the Los Angeles County Department of Parks and Recreation. Data Download LA County Parks – Trees (phases 1 and 2) – zipped shapefile Shapefile Metadata – pdf format LACO Park Trees Phases 1 and 2 – Excel Table […] With the release of the Local Roll to the public (see this data entry) we are now able to release the dataset that supports the LA County Solar Map (http://solarmap.lacounty.gov). The Solar Map Database contains the results of the 2006 solar model (for details see this data […] I was recently made aware of a couple of sites where NOAA makes data available. West Coast Ocean Data Portal, which hosts data related to the oceans on the west coast:
NOAA Digital Coast Data Registry, which is a national site (but you […] How polluted is your neighborhood? The California Office of Environmental Health Hazard Assessment (OEHHA), on behalf of the California Environmental Protection Agency (CalEPA), provides CalEnviroScreen 2.0, a screening methodology that can be used to help identify communities that are disproportionately burdened by multiple sources of pollution. To access these GIS applications, downloadable GIS […] 
Historic Fire Perimeters from the Los Angeles County Fire Department. Fire perimeter data exists from 1966 through last year. Fire perimeter data is collected from field personnel during a major fire incident. The data herein is for informational purposes, and may not have been prepared for or be suitable for legal, engineering, or surveying intents. […] This data was created on April 30, 2012 to represent known disposal sites in Los Angeles County that may produce and emanate methane gas. The shapefile contains disposal sites within Los Angeles County that once accepted degradable refuse material. Information used to create this data was extracted from a landfill survey performed by […] Depicts lands owned or managed by the U.S. Forest Service and designated by U.S. Government as a National Forest. The Los Padres and Angeles National Forests lie within the boundaries of Los Angeles County. More info on the Angeles National Forest can be found by clicking here. More info on […] NOAA provides a wealth of GIS data, including updates of its weather predictions. Here are some useful links: The NWS GIS Data Portal, where you can download kml and shapefiles. From there, you can go to: The NWS Web Services Page, where you can get the connection information for live mapping […] The Cal-Atlas site facilitates the coordinated and sustainable development, maintenance, licensing and sharing of geospatial data and web map services by California government agencies, partners and stakeholders. California government agencies work with the California GIS Council, regional GIS collaboratives and the broader California GIS community to define the data architecture, systems, standards, agreements and processes […] The coastal zone, which was specifically mapped by the Legislature, covers an area larger than the State of Rhode Island. On land the coastal zone varies in width from several hundred feet in highly urbanized areas up to five miles in certain rural areas, and offshore the coastal zone includes a three-mile-wide band of ocean. […] WorldClim is a set of global climate layers (climate grids) with a spatial resolution of a square kilometer. They can be used for mapping and spatial modeling in a GIS or other computer programs. If you are not familiar with such programs, you can tryDIVA-GIS. The database is documented in this […] Abstract: This layer was created to represent soil types in Los Angeles County. Polygons were derived from scanned soil maps. Attributes include a soil number (2-180), corresponding to runoff coefficient values in a Hydrology Manual, provided by the Los Angeles County Department of Public Works, Water Resources Division. Purpose: For use in DPW’s Modified […] Solar Insolation (global radiation) for the County of Los Angeles developed from information captured in 2006 by the LAR-IAC program. This data was created through the Area Solar Radiation function in ESRI’s ArcGIS Desktop. For more details about this function, view the ESRI help file. That function […] Normalized Difference Vegetation Index (NDVI) for the urban/suburban areas of the County of Los Angeles developed from information captured in 2006 by the LAR-IAC program. The Normalized Difference Vegetation Index (NDVI) is a simple numerical indicator that can be used to analyze remote sensing measurements, typically but not necessarily from a […] Tree Canopy for the urban/suburban areas of the County of Los Angeles developed from information captured in 2006 by the LAR-IAC program. This dataset was updated in October 2011 – see below for details. This dataset was developed by the County of Los Angeles Chief Information Office in support of the LA […] |
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