This dataset contains the dates of the imagery compiled into the 2011 Los Angeles Regional Imagery Acquisition Consortium 4-inch and 1-foot color orthophotography. We are currently waiting for one final block to be added to this dataset (the National Forest north of Santa Clarita).
Each polygon contains a 8 digit number [...]
CAMS Data (October 2011)
Current data date: August 2012 – we will be releasing new versions of this data periodically.
Important note: This file is not final – it is an intermediate step and should be used with the understanding that further work is being performed.
False Match Progress – June [...]
Supervisorial District Boundaries for LA County for 1971, 1981, and 1991.
Samples (click to enlarge)
The data from 1991 was provided by the Registrar/Recorder.
The data from 1971 and 1981 was digitized from scanned and rectified County Engineer maps provided by [...]
Current data date: June 2013
June’s update is a major revision to the LMS data, including over 5,700 changes to site locations based upon one of our major source files, the 211 database. The changes are broken down this way:
5,500 locations with changes to information (location, phone, etc) 1,700 deletions (some are [...]
Updated December 2012 – Added the Michael D. Antonovich Open Space Preserve and the Santa Clarita Woodlands Park
The Land Types dataset includes various types of land use that are critical for mapmaking and geographic analysis. The data has been created to match parcel boundaries where possible, and digitized from 4-inch aerial photography where more [...]
Height data for the urban/suburban areas of the County of Los Angeles developed from information captured in 2006 by the LAR-IAC program.
This height data was developed from the following two data sources:
The Digital Elevation Model (DEM) which modeled the ground surface at 5-foot intervals. Click here for more information The [...]
A Hillshade is a shaded relief raster from a raster. Simply, when used with maps, it provides a three-dimensional aspect to the map based upon the relief of the underlying area. A more detailed definition of a hillshade can be found here.
This hillshade was computed from the 2006 Digital Elevation Model [...]
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 creates four output files:
This file has unofficial but commonly used Community Boundaries in the County of Los Angeles
Legal Cities (like Los Angeles) are represented as well as communities (like Hollywood or Acton).
Communities (zipped Shapefile)
May 10, 2013 – added the 2D building outlines
Models of County owned buildings in three formats (shape, multipatch, and KML). These buildings were created for the LA County Solar Map and were used for high resolution modeling of solar potential
for each building.
Buildings 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 developed by the County of Los Angeles Chief Information Office in support of the LA County Solar Map Application (http://solarmap.lacounty.gov). A solar model [...]