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
Dust Storm Near Winslow, Arizona, in April 2011
Dust carried by the wind has far-reaching effects, including the loss of nutrients and water-holding capacity from landscapes, and the speeding up of the melting of snow, which affects the timing and magnitude of runoff into streams and rivers.
Dust Storm near Winslow, Arizona, in April 2011
Dust carried by the wind has far-reaching effects, including the loss of nutrients and water-holding capacity from landscapes, and the speeding up of the melting of snow, which affects the timing and magnitude of runoff into streams and rivers.
Seepage Investigation: Clear Creek and Little Colorado River
Stream gaging occurring in Winslow: Clear Creek and Little Colorado River.
Smoke From Schultz Pass Forest Fire, Flagstaff, Arizona, June 20, 2010
Panorama (180 degree field of view) photograph of smoke rising from the Schultz Pass fire near Flagstaff, Arizona, at 1:34 p.m. on its day of ignition, June 20, 2010. Over the following 10 days, the fire burned an estimated 15,075 acres, or more than 23 square miles of northern Arizona forest, and cost more than $8.6 million to fight. The fire was started by a campfire
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Grand Canyon Investigations: 131 Years in the Field
Staff at the USGS Central Region Library created two displays for an open-house in celebration of National Library Week, April, 2010. This display on USGS scientific investigtations of the Grand Canyon displays field records, historical photography,historical surveying equipment, and publications from the science areas of biology, geology, geography, and water.
Saguaro National Park, East Unit, Southern Arizona - 2010
Saguaro National Monument is now Saguaro National Park. The decline is saguaros has continued but at a rate slightly less steep than predicted. Very few of the saguaro present in 1935 remain. Meanwhile, the regeneration of this forest has already begun, as shown by findings from a long-term study-plot located at left midground. There has been a sharp increase in
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Explaining Flood Measurements
Explaning why USGS streamgagers make discharge measurements.
Measuring Low Flow in San Pedro River
Measuring low flow in the San Pedro River with flume.
Streamflow Measurement, Pinto Creek, AZ (Jan 2010)
USGS streamgagers, Mike Sanders, Arthur Rees, and Mike Schilling, are servicing the Pinto Creek near Miami, Arizona streamflow gaging station and making a streamflow measurement on January 28, 2010. Flow was measured to be 207 cubic feet per second (CFS) on the 28th but peaked earlier on the 22nd at an estimated 7,400 cfs. Debris from the flood flow can be seen in trees
USGS Measurement, Salt River (January 2010 )
USGS streamgagers, Mike Sanders and Henry Sanger are servicing the, Salt River near Roosevelt, Arizona streamflow gaging station and making a streamflow measurement on January 22, 2010. Flow was measured to be 44,500 cubic feet per second (CFS) on the 22th but peaked earlier on the 22nd at an estimated 88,000 cfs. The measurement was made from the cableway just downstream
Streamflow Measurement, Rillito Creek AZ (Jan 2010)
USGS employees, John Hoffmann, Corey Salmond, Robert Fritzinger, and Chris Smith are being interviewed by Naomi Pescovitz from KVOA on January 22, 2010. Robert Fritzinger and Corey Salmond are making a streamflow measurement at Rillito Creek at La Cholla BLVD near Tucson streamflow gaging station. The updated peak was 1,360 cubic feet per second (CFS) on January 22, 2010.
The Department of the Interior has proposed an experiment using high flows from Glen Canyon Dam to study and improve Colorado River resources in Grand Canyon National Park.
Where in Arizona are ground-water levels falling? Where are they stable or rising? How much has the water table changed since large-scale pumping has occurred?
(Flagstaff, Ariz.) An experiment using high flows from Glen Canyon Dam to study and improve Colorado River resources in Grand Canyon National Park has been proposed by the Department of the Interior.
The U.S. Geological Survey (USGS) released a report today describing salinity levels in streams and ground water in parts of Arizona, California, Colorado, Nevada, New Mexico, Utah and Wyoming. The report concludes that although salinity varies widely throughout the region, levels have generally decreased in many streams during the past two decades.
The U.S. Geological Survey hosted a two-day scientific workshop that drew state and federal government scientists, and university researchers together to discuss interdisciplinary research along the US-Mexico border.
The U.S. Geological Survey (USGS) has recently released a new fact sheet/report describing investigations that have taken place in Lake Mead, Nevada and Arizona, on synthetic organic compounds.
The U.S. Geological Survey (USGS) has recently released a new fact sheet/report describing investigations that have taken place in Lake Mead, Nevada and Arizona, on synthetic organic compounds. These compounds potentially can cause endocrine disruption in common carp.
Recently collected data for endangered humpback chub (Gila cypha) in Grand Canyon suggest that the population of adult fish (age 4+) may be stabilizing after more than a decade of decline, according to biologists with the U.S. Geological Survey's (USGS) Southwest Biological Science Center.
Recently collected data for endangered humpback chub (Gila cypha) in Grand Canyon suggest that the population of adult fish (age 4+) may be stabilizing after more than a decade of decline, according to biologists with the U.S. Geological Survey's (USGS) Southwest Biological Science Center.
Today, June 5, 2006, the U.S. Geological Survey (USGS) announces the recipients of the third year of the Mineral Resources External Research Program, a grant and/or cooperative agreement opportunity designed to support minerals research.
One of every four fishes in streams of 12 western states is non-native, according to a U.S. Geological Survey (USGS) study published in November 2005 in the North American Journal of Fisheries Management. And, researchers found, it´s not just that there are a lot of non-native fishes but they are also widespread...
One of every four fishes in streams of 12 western states is non-native, according to a U.S. Geological Survey (USGS) study published in November 2005 in the North American Journal of Fisheries Management.
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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, Yuma Office
Phone: (928) 343-8100
Arizona Water Science Center, Glendale Office
Phone: 623-773-6200
Fax: 623-773-6480