Unified Interior Regions


The Southwest Region includes California, Nevada, and Arizona. The Regional Office, headquartered in Sacramento, provides Center oversight and support, facilitates internal and external collaborations, and works to further USGS strategic science directions.

States L2 Landing Page Tabs

Filter Total Items: 226
December 19, 2019

Annex PDS Status Classification Chart

The PDS archive status (marked at upper right of each product page, see table) of geospatial data products in the Annex varies, depending on the source and date of delivery to the Annex. Most products are either PDS3 or PDS4 compliant, with the majority served as 8- or 16-bit “raw” GeoTIFFs (meaning uncompressed and untiled, see White Paper below) with detached PDS3 and

Image: Arizona Black Rattlesnake

Arizona Black Rattlesnake

The Arizona black rattlesnake is a high-elevation medium-sized (<1,000 mm) rattlesnake found primarily in Arizona and extreme western New Mexico. Adults are dark brown or black in background color, with white- or yellow-edged barker hexagonal blotches. Juveniles are born with a grey background and dark blotches. Arizona black rattlesnakes are typically found in pine-oak

Attribution: Ecosystems
Image: Arizona Upland Plant Community in the Sonoran Desert

Arizona Upland Plant Community in the Sonoran Desert

In the drier Arizona upland plant communities, pictured here, some species will likely decline with forecasted climate change (such as foothill paloverde, ocotillo and creosote bush) while cacti may well increase in abundance and range.

Attribution: Ecosystems
January 17, 2020

Annex Tutorial 2020

Shows users how to use the Annex apps and how to find data. 

September 21, 2018

I-Map Database

Excel spreadsheet listing the many planetary and lunar maps published from 1961 on. Some are available in hardcopy form at no cost to the requestor.

October 19, 2018

Lava Flow Presentation

Lava Flow Presentation by Laszlo Keszthelyi

TNMCorps Mapping Challenge: City/Town Halls in AZ, NM, & UT 01/23/2020

TNMCorps Mapping Challenge: City/Town Halls in AZ, NM, & UT 01/23/2020

June 16, 2020

RPIF Inventory

RPIF Inventory.