Unified Interior Regions
Arizona
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
San Carlos River near Peridot, Southern Arizona - 2000
The gaging station has been removed, but the approximate position of the original camera can be established from the background mountains. The channel has shifted back to the left, eliminating the cottonwood trees present in 1964, but black willow is obvious in the foreground, cottonwood seedlings and mature trees appear throughout the view, and non-native tamarisk is
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A Red-Faced Warbler in Arizona
Red-faced warblers are one of the species affected by climate change in the form of reduced snowpack in the Arizona Mountains, according to a USGS Montana Cooperative Wildlife Research Unit study.
Boundary Monument 75E, Southeastern Arizona - 1994
During the past century, the grassland has continued to become more shrubby with increases in such plants as broom snakeweed and velvet mesquite. The mesquite, occurring here near the upper limits of its range, has remained short, probably as the result of catastrophic freezes that have visited the area. Bush muhly is found beneath some of the mesquites. (Raymond M Turner
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Magellan Global C3-MDIR Colorized Topographic Mosaic
The original Magellan Compressed Mosaicked Image Data Record (C3-MIDR) archive contains three times compressed mosaics of image swaths (C-BIDRs) at a resolution of 2025 m/pixel. C3-MIDRs consist of mosaics generated by computing 3x3 pixel arithmetic moving averages from the C2-MIDRs. C3-MIDRs, with their 2.025 km pixel widths, are designed to cover the planet at reasonably
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Verde-Tangle Severe Flood 1993
This video documents two USGS employees taking a flood measurement during the most severe flood Arizona has seen in 100 years.
Flash Floods: USGS Against the Water
A glimpse at the often dangerous task USGS employees make every year to obtain stream flow measurements from flood events.
Santa Catalina Highway, near Tucson, Southern Arizona - 1987
This image was taken above the Santa Catalina Highway near mile 2.8 a few months after a fire burned across a south-facing slope. The saguaros are showing the effects of being scorched but are still standing. (Raymond M. Turner).
Harrison 'Jack' Schmitt with the American Flag and Earth (Apollo 17)
Harrison H. Schmitt during the Apollo 17 mission.
Apollo Grover Historical Photo: B1
James Irwin(left) and David Scott(right) training in the Lunar Roving Vehicle training version known also known as the "Grover"
San Carlos River near Peridot, Southern Arizona - 1964
Riparian vegetation has increased to the extent of blocking the downstream view. The channel appears to have shifted to the right, and the terrace is now occupied by cottonwood, black willow, and tamarisk. (Raymond M. Turner).
Huérfano Butte, Santa Rita Experimental Range, Southern Arizona - 1941
Members of the 1930s burrowed and cholla eruptions were visible in 1941 as well as new mesquite plants that were already quite large. (Photographer unknown).
A new U.S. Geological Survey (USGS) assessment of the nation’s coal resources shows abundant high quality, low-sulfur coal on federal and private lands in the Colorado Plateau region of Arizona, Colorado, New Mexico and Utah. The area is also home to vast quantities of coal bed methane gas - natural gas contained in coal.
Even as the Chiricahua leopard frog has disappeared from 80 percent of its former habitat, scientists, resource managers, ranchers, volunteer naturalists and even teachers and schoolchildren are striving to discover what is killing this frog and to sustain its populations in southeast Arizona until answers are found.
Following a competitive nation-wide search, Dr. Barry D. Gold has been named to head the Grand Canyon Monitoring and Research Center of the U.S. Department of the Interior, by Dr. Charles R. Groat, director of the U.S. Geological Survey.
Weather forecasts and the Southwestern environment will be highlighted Wednesday afternoon, November 10, as The U.S. Geological Survey and the National Weather Service (NWS) host an open house at their facilities in the Dennis DeConcini Environment and Natural Resources Building on the University of Arizona campus.
Following the official dedication Friday morning, March 21, 1997, of the University of Arizona’s new Environment and Natural Resources Building, the public is invited to tour the facility on the campus at the northeast corner of Sixth Street and Park Avenue.
You no doubt are already aware of the March 21, 1997 dedication ceremony for the University of Arizona’s new Environmental and Natural Resources building at 520 North Park Avenue in Tucson. The building will be occupied by the U.S. Geological Survey, the U.S. Weather Service, and U of A students.
The presence of the U.S. Geological Survey in the University of Arizona’s Environment and Natural Resources Building marks the latest chapter in the USGS’s long association with the University and the study of earth sciences in Arizona.
The gasoline additive MTBE (methyl tert-butyl ether) was detected in some urban stormwater samples collected in 16 cities and metropolitan areas by the U.S. Geological Survey, but all detections of MTBE were less than the lower limit of the U.S. Environmental Protection Agency’s draft lifetime health advisory for drinking water.
About 2200 pounds of nontoxic red dye will be dumped into the Colorado River Wednesday (Mar. 27, 1996) as part of a controlled flood experiment in the Colorado River in the Grand Canyon, according to hydrologists at the U.S. Geological Survey.
Call the U.S. Geological Survey scientists listed below for information about the water science aspects of the controlled flood experiment in the Colorado River, Mar. 22-April 7, 1996. Mark Anderson is the key information scientist for the USGS on-site, and other scientists are working on-site and are available on a limited basis. Still others will be in the USGS office in Tucson throughout the ex
Follow the Colorado River Controlled Flood onthe World Wide Web
It’s spring and some people are busy cleaning house and rearranging the furniture.
Spring cleaning and rearranging of a different kind will take place in the Grand Canyon next week, as the Colorado River scours its bed and rearranges sandbars that have built up in the river’s winding channel.
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Locations
Astrogeology Science Center
Phone: 928-556-7000
Fax: 928-556-7014
Southwest Biological Science Center - Flagstaff, AZ, Headquarters
Phone: 928-556-7094
Fax: 928-556-7092
Southwest Climate Adaptation Science Center
Western Geographic Science Center - Tucson Project Office
Western Geographic Science Center - Flagstaff Project Office
Arizona Water Science Center, Tucson Office
Phone: (520) 670-6671
Fax: (520) 670-5592
Yellowstone Volcano Observatory (YVO)
yvowebteam@usgs.gov
Phone: 360-993-8906
Southwest Biological Science Center - Tucson, AZ, Research Station
Phone: (520) 670-6671
Fax: (520) 670-5592
Arizona Water Science Center, Flagstaff Office
Phone: (928) 556-7136
Fax: (928) 556-7112
Arizona Water Science Center, Tempe Office
Phone: (480) 736-1093
Fax: (480) 736-1356
Arizona Water Science Center, Yuma Office
Phone: (928) 782-6024
Fax: (928) 782-0268