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Scenic Highways

Description Adopted and Proposed Scenic Highways from Caltrans (click here for more information) Updated 4/20/17 for a newly adopted scenic highway.

Data can be downloaded here:

Download Shapefile (.zip)

OpenStreetMap (OSM) California Downloads

Download: OSM California Streets, etc. (Geofabrik)

Download: OSM Land Polygons (Jochen Topf and Christoph Hormann)

OpenStreetMap (OSM) is built by a community of mappers that contribute and maintain data about roads, trails, cafes, railway stations, and much more, all over the world. Luckily, Geofabrik, a German-based consulting firm regularly […]

2014 Color Orthophotography – LARIAC4

This dataset represents natural color, leaf-off, 0.33-foot (4-inch) high-resolution, high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC) in winter 2013/2014. This imagery covers the majority of urban/suburban areas of the County in mainland (approximately 2,898 square miles) and Catalina Island covering approximately 75 square miles.

The rest of the County, […]

Countywide Building Outlines – 2014

LA County, through its LARIAC program, has updated its 2008 building outlines to incorporate changes since the buildings were initially captured in 2008 (click here to view and download that data).

This new data is NOT public – you must be a member of LARIAC to access it. If you are interested in […]

Business Locations

Data Licensed from US Data Depot showing the location, type, size, and other attributes for over 720,000 businesses in Los Angeles County. This data is for internal County use only and cannot be provided to external agencies. Pricing for this data is available at the US Data Depot Website. […]

2006 2-foot contours – LAR-IAC

2 foot contours acquired as part of the Los Angeles Regional Imagery Acquisition Consortium in 2006.

The Digital Surface Model was acquired using LIDAR (Light Detection And Ranging), which used a laser mounted in planes that were acquiring 4-inch orthophotography data. Hundreds of millions of ground measurements were made using this system, which […]

Guide to Replacing Thomas Brothers

The County of Los Angeles has embarked on projects to replace the data it has historically licensed from Thomas Brothers with data that it owns and maintains internally. This will allow the County to distribute, update, and improve this data without current restrictions. The layer by layer comparison is listed below, and in the guide […]

2011 4-inch Color Orthophotography – LAR-IAC3

This dataset represents natural color, leaf-off, 0.33-foot (4-inch) high-resolution, high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC) in winter 2010/2011. This imagery covers the majority of urban/suburban areas of the County in mainland (approximately 2,898 square miles) and Catalina Island covering approximately 75 square miles. The rest of the County, […]

Caltrans GIS Data Portal

This is a rich set of data available from CalTrans – not limited only to Transportation data:

http://www.dot.ca.gov/hq/tsip/gis/datalibrary/gisdatalibrary.html

Transportation Layer Themes…

Road Base Map images (geo-referenced) Bus/Transit Freight/Ports Airports Projects California Interregional Blueprint (CIB)

Caltrans GIS Coordinators List (updated 7/2014)- click here.

 

More, from the website:

How to […]

Countywide Building Outlines – 2008 – Public Domain

November 1, 2012 – this data is now public

The Countywide building outline dataset contains building outlines (over 3,000,000) for all buildings in Los Angeles County, including building height, building area, and the parcel number (also known as building footprints). This data was captured from stereo imagery as part of the LAR-IAC2 Project (2008 acquisition).

[…]

Height raster dataset (2006)

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 […]

Hillshade (2006)

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 (DEM) […]

Solar Radiation Model (2006)

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:

[…]

Normalized Difference Vegetation Index (NDVI) – 2006

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 space […]

Tree Canopy – Raster (2006 Data)

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 County […]

2010 6-inch Post-Fire Orthophotography

This data is 6-inch color orthophotography flown the week of February 15th, 2010 to document the impact of debris flows February 6th, 2010.

Coverage Area (with Station Fire Perimeter)

On the morning of February 6th, 2010, the community of La Canada Flintridge saw a major debris flow on a number of streets […]

County owned buildings (2D and 3D models)

Details

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

Downtown Area

for each building.

[…]

2006 5-foot (1.7 M) Digital Surface Model (DSM) – LAR-IAC

Digital Surface Model (DSM) acquired as part of the Los Angeles Regional Imagery Acquisition Consortium in 2006. The DSM contains elevations and includes buildings, vegetation, and roads, as well as natural terrain features, whereas the DEM (Digital Elevation Model) represents bare earth.

This dataset is one of a group of […]

2006 5-foot (1.7M) Digital Elevation Model (DEM) – LAR-IAC

 

Digital Elevation Model (DEM) acquired as part of the Los Angeles Regional Imagery Acquisition Consortium in 2006. The DEM represents bare earth, whereas a related product (DSM) contains elevations and includes buildings, vegetation, and roads, as well as natural terrain features, whereas .

Download

The 5 foot data cannot […]

2006 4-inch Color Infrared (CIR) Orthophotography – LAR-IAC

 

Color Infrared, leaf-off, 0.33-foot (4-inch) high-resolution, high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC) in winter 2005/2006.

Infrared is an additional wavelength of information that can be captured by many aerial photography sensors in addition to the general Red/Green/Blue (RGB) channels typical to most imagery. The […]

2006 Buildings (2-foot raster)

Coverage

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 […]

2008 1-foot Orthophotography (National Forest) – LAR-IAC2

Countywide Coverage

Natural color, leaf-off, 1-foot high-resolution, high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC2) in early 2008. This imagery covers the National Forest areas of the County, approximately 1,056 square miles, and is a separate dataset. The urban/suburban areas of the County in mainland (approximately 2,898 […]

2006 1-foot Orthophotography (National Forest) – LAR-IAC

Coverage

Natural color, leaf-off, 1-foot high-resolution, high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC) in early 2006. This imagery covers the National Forest areas of the County, approximately 1,056 square miles, and is a separate dataset. The urban/suburban areas of the County in mainland (approximately 2,898 square […]

2006 4-inch Color Orthophotography – LAR-IAC

Detail

Natural color, leaf-off, 0.33-foot (4-inch) high-resolution, high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC) in early 2006. This imagery covers the majority of urban/suburban areas of the County in mainland (approximately 2,898 square miles) and Santa Catalina Island covering approximately 75 square miles. The rest of […]

2008 4-inch Color Orthophotography – LAR-IAC2

Detail

Natural color, leaf-off, 0.33-foot (4-inch) high-resolution, high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC) in winter 2007/2008. This imagery covers the majority of urban/suburban areas of the County in mainland (approximately 2,898 square miles) and Catalina Island covering approximately 75 square miles. The rest of the […]