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

Filter Total Items: 143
Date published: September 26, 2018
Status: Active

Meteor Crater Drill Cores

While inventorying the drill cuttings from Meteor Crater, we identified 31 boxes of drill core from the crater. Unfortunately, there was little or no documentation for these cores and we initially did not know the drill hole locations or any of the ancillary details. With the assistance of Dr. David Kring, we eventually determined the origin of all of the drill cores. We found...

Date published: September 26, 2018
Status: Active

Meteor Crater Sample Collection

Meteor Crater is a 180 m deep, 1.2 km diameter bowl-shaped impact crater in Northern Arizona, and has long been a terrestrial analog site for planetary exploration. During the 1960’s, Eugene Shoemaker trained NASA astronauts at the crater to prepare for the Apollo missions to the Moon. The Meteor Crater Sample Collection consists of geologic samples from the Meteor Crater...

Date published: September 26, 2018
Status: Active

Lunar Calibration ROLO (Robotic Lunar Observatory)

The USGS lunar calibration program provides radiometric calibration and sensor stability monitoring for space-based remote sensing instruments using the Moon as a reference source. This is a unique on-orbit calibration technique for solar reflectance wavelengths that requires no special flight hardware, only that the instrument must view the Moon. The unmatched stability of the lunar...

Date published: September 24, 2018
Status: Active

MRCTR GIS Lab

The USGS Astrogeology Mapping, Remote-sensing, Cartography, Technology, and Research (MRCTR, pronounced "Mercator") GIS Lab provides web-based resources aimed at the planetary research community. The lab supports Geographic Information Systems (GIS) graphical, statistical, and spatial tools for analyses of planetary data, including the distribution of planetary GIS tutorials,...

Date published: September 21, 2018
Status: Completed

RPIF Online Exhibits

The NASA/USGS RPIF is dedicated to providing online exhibits of archived materials. The RPIF houses a large collection of historical artifacts in relation to space exploration, map-making, and planetary geology.

Contacts: Amy Zink
Date published: September 21, 2018
Status: Active

PDS Cartography and Imaging Sciences Node at USGS

The USGS Astrogeology Science Center is host to the lead science component of the Cartography and Imaging Sciences Node (IMG) of the NASA Planetary Data System (PDS). A partner facility at the Jet Propulsion Laboratory (JPL) provides engineering support and technical management for the IMG. The IMG is a PDS science discipline node that manages an archive of more than 1500 TB...

Date published: September 21, 2018
Status: Active

USGS/NASA Planetary Photogrammetry Guest Facility

-- ON HOLD -- Training Opportunity -- ON HOLD --

Photogrammetric Processing of Planetary Stereo Imagery using ISIS and SOCET GXP® TBD

 

Please note that we no longer have any scheduled SOCET SET® trainings at this time. We are currently transitioning to BAE's latest photogrammtry suite called SOCET...

Date published: September 19, 2018
Status: Completed

RPIF Pioneers of Astrogeology

Some of the pioneers in planetary geologic research include Eugene Shoemaker, Harrison "Jack" Schmitt, Don Wilhelms, Raymond Batson, David Roddy, Gordon Swann and Baerbel Lucchitta. Click on the images below to learn about each person and their contributions to Astrogeology.

Contacts: Amy Zink
Date published: September 19, 2018
Status: Completed

Gordan Alfred Swann

Gordon Alfred Swann was born in Palisade, CO, September 21, 1931. After serving in the U.S. Navy from 1952 to 1956, he received a Ph.D. from the University of Colorado in 1962 as one of the pioneers in a study of the Precambrian geology of the Front Range of Colorado. His career in the U.S. Geological Survey (USGS) began in Denver in 1963 working on a Defense Department...

Date published: September 19, 2018
Status: Completed

Dave Roddy

Dave Roddy was a world-renowned scientist at the forefront of investigators studying impact and explosion craters. His field mapping of Flynn Creek was the first mapping detailed enough to demonstrate the impact origin of an ancient structure in North America. David was an authority on the Meteor Crater impact structure, east of Flagstaff. Dave's work has assisted in the...

Date published: September 19, 2018
Status: Completed

Raymond Milner Batson

Ray Batson was born in Lincoln, Nebraska, on 8 July 1931. His lifelong passion for flying surfaced early. In high school he worked at Stapleton Airfield in Denver refueling planes in order to pay for flying lessons, and obtained his private pilot’s license. After a year of study at Regis College, he enlisted in the United States Air Force and served a two-year tour of duty as...

Date published: September 19, 2018
Status: Completed

Don Wilhelms

With his geologic mapping of the Moon, Don Wilhelms set the methods and standards for planetary mapping. He is author of Geologic History of the Moon (1987, USGS Professional Paper 1348) and To a Rocky Moon, A Geologist's History of Lunar Exploration (1993, University of Arizona Press), as well as many other science publications and planetary geologic maps. Don helped train...

Filter Total Items: 130
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Year Published: 1995

Measurements of aquifer-storage change and specific yield using gravity surveys

Pinal Creek is an intermittent stream that drains a 200-square-mile alluvial basin in central Arizona. Large changes in water levels and aquifer storage occur in an alluvial aquifer near the stream in response to periodic recharge and ground-water withdrawals. Outflow components of the ground-water budget and hydraulic properties of the alluvium...

Pool, D.R.; Eychaner, J.H.

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Year Published: 1995

Measured and predicted velocity and longitudinal dispersion at steady and unsteady flow, Colorado River, Glen Canyon Dam to lake mead

The effect of unsteadiness or dam releases on velocity and longitudinal dispersion of flow was evaluated by injecting a fluorescent dye into the Colorado River below Glen Canyon Dam and sampling for dye concentration at selected sites downstream. In Glen Canyon, average flow velocity through the study reach increased directly with discharge, but...

Graf, J.B.
Measured and predicted velocity and longitudinal dispersion at steady and unsteady flow, Colorado River, Glen Canyon Dam to lake mead; 1995; Article; Journal; Water Resources Bulletin; Graf, J. B.

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Year Published: 1995

Cross-sectional area of the shallow alluvial aquifer at selected sites along the upper Santa Cruz River, Arizona

No abstract available. 

Carruth, Rob
Cross-sectional area of the shallow alluvial aquifer at selected sites along the upper Santa Cruz River, Arizona; 1995; WRI; 95-4112; Carruth, Robert L.

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Year Published: 1994

Accounting for Consumptive Use of Lower Colorado River Water in Arizona, California, Nevada, and Utah

In the Colorado River valley between the east end of Lake Mead and the international boundary with Mexico (see figure), the river is the principal source of water for agricultural, domestic, municipal, industrial, hydroelectric-power generation, and recreational purposes. Water is stored in surface reservoirs and in the river aquifer---permeable...

Owen-Joyce, Sandra J.; Wilson, Richard P.
Accounting for Consumptive Use of Lower Colorado River Water in Arizona, California, Nevada, and Utah; 1994; FS; 074-94; Owen-Joyce, Sandra J.; Wilson, Richard P.

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Year Published: 1994

Summary of ground-water conditions in Arizona, 1987-90

Annual ground-water withdrawals in Arizona were 2.9, 3.3, 3.6, and 3.4 million acre-feet for calendar years 1987. 1988, 1989, and 1990. The average annual ground-water withdrawal for Arizona from 1980-89 was 3.7 million acre-feet, which was the lowest average annual withdrawal for any decade since the 1940' s. Since 1947, annual ground-water...

Anning, D.W.; Duet, N.R.
Summary of ground-water conditions in Arizona, 1987-90; 1994; OFR; 94-476; Anning, D. W.; Duet, N. R.

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Year Published: 1994

Method to identify wells that yield water that will be replaced by Colorado River water in Arizona, California, Nevada, and Utah

Accounting for the use of Colorado River water is required by the U.S. Supreme Court decree, 1964, Arizona v. California. Water pumped from wells on the flood plain and from certain wells on alluvial slopes outside the flood plain is presumed to be river water and is accounted for as Colorado River water. A method was developed to identify wells...

Wilson, Richard P.; Owen-Joyce, Sandra J.
Method to identify wells that yield water that will be replaced by Colorado River water in Arizona, California, Nevada, and Utah; 1994; WRI; 94-4005; Wilson, Richard P.; Owen-Joyce, Sandra J.

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Year Published: 1993

Determining the source of water pumped from wells along the lower Colorado River

Wilson, Richard P.; Owen-Joyce, Sandra J.
Determining the source of water pumped from wells along the lower Colorado River; 1993; OFR; 93-405; Wilson, Richard P.; Owen-Joyce, Sandra J.

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Year Published: 1993

Results of ground-water, surface-water, and water-quality monitoring, Black Mesa area, northeastern Arizona, 1991-92

Littin, G.R.
Results of ground-water, surface-water, and water-quality monitoring, Black Mesa area, northeastern Arizona, 1991-92; 1993; WRI; 93-4111; Littin, G. R.

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Year Published: 1993

Streamflow and sediment-transport data, Colorado River and three tributaries in Grand Canyon, Arizona, 1983 and 1985-86

The U.S. Geological Survey collected streamflow and sediment-transport data at 5 streamflow-gaging stations on the Colorado River between Glen Canyon Dam and Lake Mead as a part of an interagency environmental study. The data were collected for about 6 mo in 1983 and about 4 mo in 1985-86; data also were collected at 3 sites on tributary streams...

Garrett, W.B.; van de Vanter, E.K.; Graf, J.B.
Streamflow and sediment-transport data, Colorado River and three tributaries in Grand Canyon, Arizona, 1983 and 1985-86; 1993; OFR; 93-174; Garrett, W. B.; van de Vanter, E. K.; Graf, J. B.

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Year Published: 1992

Accounting System for Water Use by Vegetation in the Lower Colorado River Valley

The Colorado River is the principal source of water in the valley of the Colorado River between Hoover Dam and the international boundary with Mexico (fig. 1). Agricultural, domestic, municipal, industrial, hydroelectric-power genera-tion, and recreation are the primary uses of river water in the valley. Most of the consumptive use of water from...

Owen-Joyce, Sandra J.
Accounting System for Water Use by Vegetation in the Lower Colorado River Valley; 1992; OFR; 92-83; Owen-Joyce, Sandra J.

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Year Published: 1992

Results of ground-water, surface-water, and water-quality monitoring, Black Mesa area, northeastern Arizona; 1989-90

Sottilare, J.P.; Bills, D.J.; Brown, J.G.
Results of ground-water, surface-water, and water-quality monitoring, Black Mesa area, northeastern Arizona; 1989-90; 1992; WRI; 92-4008; Sottilare, J. P.; Bills, D. J.; Brown, J. G.

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Year Published: 1992

Results of ground-water, surface-water, and water-quality monitoring, Black Mesa area, northeastern Arizona; 1990-91

Littin, G.R.
Results of ground-water, surface-water, and water-quality monitoring, Black Mesa area, northeastern Arizona; 1990-91; 1992; WRI; 92-4045; Littin, G. R.

Filter Total Items: 244
July 30, 2017

A Record of Change: Science and Elder Observations on the Navajo N.

A Record of Change—Science and Elder Observations on the Navajo Nation is a 25-minute documentary about collaborative studies using conventional physical sciences, combined with tribal elder observations to show that local knowledge and conventional science partnerships can effectively document ecosystem change and determine the resulting challenges to livelihoods. 

Photo of seeding experiment to improve restoration outcomes in the Southwest.
July 17, 2017

Seeding experiment to improve restoration outcomes in the Southwest.

USGS ecologists Molly McCormick (left) and Katie Laushman (right) conducting a seeding experiment that is a part of RAMPS, a new USGS-led initiative to improve restoration outcomes in the Southwest. 

...
Blowing dust in a fallowed agricultural field in central Arizona.
June 30, 2017

Bare Ground = Blowing Dust

Across the desert Southwest, ground void of plant material is prone to soil erosoin and dust storms. In this fallowed agricultural field, we see that a spring breeze can carry away fertile top soil and create air quality concerns. USGS RAMPS defines causes of environmental hazards created by degraded land, and creates collaborative solutions to reduce these types of risks

...
Satellite images showing landsat 7 and landsat 8 fire images on the western U.S.
June 29, 2017

Fires in the Western United States

On an average day during the fire season, multiple wildfires burn in the western United States. For example, 216 fires were active on July 7, 2017. Firefighters were battling 27 of these fires through ground and air support.

A few of the larger fires in early July were in Arizona, Washington, and Utah. As with many wildfires, 

...
Satellite image showing the Las Vegas, Lake Mead, Grand Canyon area
June 16, 2017

Satellite Image of the Las Vegas, Lake Mead, Grand Canyon Area

This image of the Las Vegas /Lake Mead / Grand Canyon area was acquired on June 16, 2017, with Indian Space Research Organization’s Resourcesat-2 AWiFS sensor. Images of this region can be useful to help detect changes in vegetation and water availability for growing desert communities.

May 31, 2017

New USGS Maps of Mars Reveal Ancient Oases

Flyover of the southeast Ceti Mensa map. Distinct groups of rock layers, called geologic units, are shaded in different colors, with dark browns representing the oldest rocks and green representing the youngest rocks. All of these rocks formed as wind-blown sand that became trapped in shallow, ephemeral lakes, similar to the wet playas of the desert southwest US. The

May 31, 2017

Reach-Scale Monitoring | Advances in Stream Gaging

The Arizona Water Science Center demonstrates new methods in Reach-Scale Monitoring to improve accuracy and measurability of high flow events. By installing pressure transducers and using LiDAR to measure topography data, hydrologists are able to simulate flows with two dimensional models which will help better calibrate stream gages. These advances have potential to aid

An extremely rare Mojave River western pond turtle was recently observed in the Mojave Desert.
May 4, 2017

An extremely rare Mojave River western pond turtle

An extremely rare Mojave River western pond turtle was recently observed by USGS scientists and staff from The Living Desert Zoo and Gardens in the Mojave Desert. Turtles of this population have rarely been seen since the late 1990s.

A few tiny leaves on a branch
August 24, 2016

New tamarisk leaves re-grow after tamarisk leaf beetle defoliation

Tamarisk leaves regrow following defoliation by the biological control agent, tamarisk leaf beetle (Diorhabda spp.).

A mostly dead bush with one living branch
August 22, 2016

Tamarisk re-grows new leaves after tamarisk leaf beetle defoliation

Tamarisk can re-grow new leaves after being defoliated by the biocontrol agent tamarisk leaf beetle (Diorhabda spp.).

mostly dead bush re-sprouting after fire
August 22, 2016

Nonnative tamarisk is fire resistant

Nonnative tamarisk is resistant to wildfire, in part due to its abilty to resprout from the its roots.

Dead and living trees near a river
August 22, 2016

Defoliated nonnative tamarisk with native cottonwood trees

Nonnative tamarisk can form mixed stands with native trees, such as cottonwoods, and other nonnative trees, such as Russian olive. 

Filter Total Items: 201
imaging from Mars
September 2, 2015

A new analysis of the largest known deposit of carbonate minerals on Mars helps limit the range of possible answers about how and why Mars changed from a world with watery environments billions of years ago to the arid Red Planet of today.

Map of the Glen Canyon Dam study area
August 19, 2015

Although the Grand Canyon segment of the Colorado River features one of the most remote ecosystems in the United States, it is not immune to exposure from toxic chemicals such as mercury according to newly published research in Environmental Toxicology and Chemistry.

USGS
May 5, 2015

Water availability in the middle San Pedro watershed in southeast Arizona is strongly dependent on climate and water use, according to a new water resource assessment by the U.S. Geological Survey, in cooperation with the Arizona Department of Water Resources.

Image: Female Golden Eagle with GPS-GSM Transmitter
April 8, 2015

Golden eagles in the Mojave Desert travel farther, to different areas, and at different times of the year than previously understood, according to research by the U.S. Geological Survey and partners from other federal agencies, academia and the private sector. 

collage of scientists conducting science related to each mission are
March 3, 2015

While the earth contains enough potash to meet the increased global demand for crop production and U.S. supplies are likely secure, some regions lack potash deposits needed for optimal food crop yields. According to a recent USGS global assessment of potash resources, the costs of importing potash long distances can limit its use and imports are subject to supply disruptions.

USGS science for a changing world logo
February 10, 2015

A new U.S. Geological Survey study shows how plants’ vulnerability to drought varies across the landscape; factors such as plant structure and soil type where the plant is growing can either make them more vulnerable or protect them from declines.

New (2014) Black Canyon City, Arizona US Topo quadrangle
January 7, 2015

Newly released US Topo maps for Arizona now feature mountain bike trails, segments of the Arizona National Scenic Trail and Public Land Survey System data. Several of the 1,880 new US Topo quadrangles for the state now display these selected new features along with other improved data layers.

USGS
December 18, 2014

Secretary of the Interior Sally Jewell announced today that Interior’s Southwest Climate Science Center is awarding nearly a million dollars to universities and other partners for research to guide managers of parks, refuges and other cultural and natural resources in planning how to help species and ecosystems adapt to climate change.

USGS
September 18, 2014

Scientists and technicians from the U.S. Geological Survey will be conducting field studies of flood flows from the recent heavy rains resulting from Tropical Storm Odile today.

Filter Total Items: 84