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USGS Quad Map Grids

Pasadena Quad

These datasets contain the geographic extent of USGS 1:24,000 topographic maps (7.5- by 7.5-minute quadrangles).

Data Downloads

LA County: This dataset is optimized for LA County – some quad sheets are actually extended beyond the cord grid system to cover small areas of coastline.

Click here to […]

LA County Sanitation Districts GIS Page

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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.

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Historic Maps of Los Angeles City (1849, 1908)

Two georeferenced images of historic maps of Los Angeles were downloaded from Earthworks, as posted by SoCalGIS. Since they were georeferenced I thought they might be of interest.

Many thanks to Harvard University Library for scanning and georeferencing these maps.

Click below to download

Map of Los Angeles (1849) […]

Instructional Videos

We have a pair of instructional videos for the LA County GIS Data Portal that will help you make better use of the data available on this site. The first video shows you how to find and download GIS data from our site, while the second shows you how to use free software to […]

California GeoPortal

California has launched its GeoPortal: http://portal.gis.ca.gov

Read the press release Here’s another press item

Congratulations to Scott Gregory (GIO of California) and his team – it’s a great start!

 

My quick takes:

The sound clips talk a lot about mobile apps – looking forward to what that […]