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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 download […]

LA County Bathymetry Data

The USGS developed a number of valuable bathymetric datasets off the coast of Los Angeles County in 1996 that we have loaded into our repository, and are made available here. The datasets include:

Source backscatter data 50 foot contours Bathymetry data in DEM format Hillshade Bathymetric Relief

For more details please visit: https://walrus.wr.usgs.gov/pacmaps/la-index.html

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USGS Geographic Names Information System (GNIS)

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 […]

Imagery of Southern California (Orange, Riverside, San Bernardino Counties) – 2014

USGS has now posted 2014 imagery for a portion of the southern California urban region. New imagery was collected in mid 2014 by USGS contractors for the built up areas around the Orange County and Riverside/San Bernardino urban areas. This region covers about 2,250 square miles. The images have a one foot resolution […]

USGS Faults

This dataset contains quaternary faults within 50 miles of Los Angeles County.

Click here to download the shapefile

Source

The source of this data is the USGS Earthquake Hazards Program. The data was downloaded from the Faults and Folds Database website (click to access).

The USGS has comprehensive metadata on […]

USGS Map Services

The USGS supports a number of map services:

These allow you to view nationwide data from The National Map in your GIS software. To use these in ArcGIS – select Add Data button then choose GIS Server from the list, then “add ArcGIS Server”

 

To add the tiled map cache (these are […]

2011 LAR-IAC Imagery – Public Domain (1 foot) – FREE

USGS Earth Explorer

This dataset represents natural color, leaf-off, 1 foot high-accuracy orthorectified aerial imagery, acquired by the Los Angeles Regional Imagery Consortium (LAR-IAC) in winter 2010/2011, and made public with the partnership of the US Geological Survey (USGS). The DEM represents bare earth, whereas a related product (DSM) contains elevations and includes […]

US Geological Survey (USGS) Topographic Maps

Layering

The US Geological Survey has made its standard topo maps available for download through The National Map Viewer. NOTE – through research I have found that the USGS topo Store is a better place to go to download the maps. Click here to go to the store

There are […]

USGS site for LIDAR and Elevation Data

This site is a valuable resource for downloading LIDAR and Elevation data, including recent hi-resolution LIDAR along the coastlines of the United States.

Click to go to the National Map Viewer and Download location

Watershed Boundaries

This dataset contains watershed boundaries for watersheds covering Los Angeles County.

This dataset was downloaded, extracted and prepared from the National Hydrography Dataset. The NHD is a comprehensive effort by the US Geological Survey to manage and maintain a comprehensive, high quality, nationwide dataset for GIS mapping and analysis of water features and […]

Hydrologic Points

This dataset contains hydologic points (gaging stations, gates, rock features, springs, water intakes, wells, waterfalls, reservoir points) in LA County.

This dataset was downloaded, extracted and prepared from the National Hydrography Dataset. The NHD is a comprehensive effort by the US Geological Survey to manage and maintain a comprehensive, high quality, nationwide dataset […]

Lakes & Reservoirs

This dataset contains lakes & reservoirs in LA County.

This dataset was downloaded, extracted and prepared from the National Hydrography Dataset. The NHD is a comprehensive effort by the US Geological Survey to manage and maintain a comprehensive, high quality, nationwide dataset for GIS mapping and analysis of water features and conveyance. While […]

Rivers, Streams, Water Conveyance (pipelines, aqueducts)

This dataset contains rivers, streams, and water conveyance mechanisms (pipelines, aqueducts).

This dataset was downloaded, extracted and prepared from the National Hydrography Dataset. The NHD is a comprehensive effort by the US Geological Survey to manage and maintain a comprehensive, high quality, nationwide dataset for GIS mapping and analysis of water features and […]