Regions

Arizona

States L2 Landing Page Tabs

The Southwest Region ranges from the Colorado Rockies to the Gulf Coast and the Western Deserts to the Great Plains. The Southwest Region conducts multi- and interdisciplinary research and monitoring in locations across the Region, the United States, around the world, and across our solar system.

News

A huge canyon surrounded by deep-set cliffs opens to reveal a sunny gorge and part of the Colorado River.
April 11, 2019

A new study shows that mysterious cycles in salinity in the lower Colorado River are a result of precipitation patterns in the headwaters of the upper basin more than a thousand river miles away. The salinity levels generally repeat about every 10 years.

This is a photo of a view of Lake Powell's south shore.
March 18, 2019

Mercury concentrations within Lake Powell are highest in side canyons within the lower portion of the reservoir, according to a new U.S. Geological Survey report. This finding is part of a study to better understand why mercury concentrations in striped bass are higher in the lower part of the reservoir.

rock dam
December 7, 2018

Laura Norman's Aridland Water Harvesting Study helps lead a tour of a restoration and monitoring project at the Boy Scouts of America, Heard Scout Pueblo (HSP) in Phoenix, Arizona.

Filter Total Items: 119
Application to explore US Oil and Gas Assessments
Date Published: April 19, 2019
Status: Active

United States Assessments of Undiscovered Oil and Gas Resources

USGS Energy Resources Program provides periodic assessments of the oil and natural gas endowment of the United States and the World (click here for information about World Oil and Gas Assessments).  This website provides access to new, prioritized, assessment results and supporting data for the United States, as part...

RPIF Logo
Date Published: March 27, 2019
Status: Completed

Grover Photo Collection

The Apollo Lunar Roving Vehicle was an engineering miracle, but It would have collapsed on Earth under the weight of a suited astronaut. That's because it was designed to operate in lunar gravity, which pulls with about 15% as much force as Earth gravity. In the 1960s, engineers at the U.S. Geological Survey's Astrogeology Branch built a near-copy of the Apollo rover that...

August-September 2014 Southwest flood events
Date Published: February 26, 2019
Status: Completed

August-September 2014 Southwest Floods

Learn more about USGS flood activities related to the August-September 2014 Floods, caused by heavy rains followed by remnants of Hurricane Odile which brought major flooding to parts of Arizona.

September 2013 Southwest floods
Date Published: February 25, 2019
Status: Completed

September 2013 Southwest Floods

Learn more about USGS flood activities related to the September 2013 Southwest Floods that occurred when rains brought major flooding to parts of Colorado, New Mexico, Arizona, and Utah.

Attribution: Water Resources
Land Cover Point of Pines
Date Published: December 12, 2018
Status: Active

Tribal Land Vegetation and Watershed Modeling

San Carlos Apache Reservation covers 1.8 million acres in east-central Arizona, and has diverse ecosystems and vegetation types that support a natural resource-based economy.

Province 5025 Southern Arizona-Southwestern New Mexico National Oil and Gas Assessments
Date Published: December 6, 2018
Status: Active

Southern Arizona-Southwestern New Mexico Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Southern Arizona-Southwestern New Mexico Basin 5025:

Province 5024 Northern Arizona National Oil and Gas Assessments
Date Published: December 6, 2018
Status: Active

Northern Arizona Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Northern Arizona Province 5024:

 

USGS
Date Published: November 21, 2018
Status: Completed

Lunar Consortium

Presented here are variety of data selected from a collection of data commonly referred to as the Lunar Consortium Data. This pre-Clementine data set consists of products derived from Apollo, Lunar Orbiter, Galileo, and Zond 8 missions. Select data collected from Earth-based observations are also included as part of this collection.

 

...

Mars Ice
Date Published: November 19, 2018
Status: Completed

SP Recession

TES Observations of the South Pole

T.N. Titus (Oak Ridge Associated Universities), H.H. Kieffer, K.F. Mullins (U.S. Geological Survey)

he recession of the south polar cap has been observed telescopically and from spacecraft in both the visible and thermal regions. Although a simple cap-edge versus time plot has commonly been used, without regard as to...

Province 5021 Paradox Basin National Oil and Gas Assessment
Date Published: November 19, 2018
Status: Active

Paradox Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Paradox Basin Province of Utah, Colorado, New Mexico and Arizona 5021:

Mars Ice
Date Published: November 19, 2018
Status: Completed

SP Cryptic Region

Kieffer, H.H., Titus, T.N., Mullins, K.F., Becker, K., Johnson, J., Christensen, P.

The early part of the Mars Global Surveyor mission provided good TES coverage of the Mars south polar region. 

Province 5019 Eastern Great Basin National Oil and Gas Assessments
Date Published: November 19, 2018
Status: Active

Eastern Great Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas potential of the Eastern Great Basin Province of eastern Nevada, western Utah, southeastern Idaho, and northwestern Arizona 5019:

  • 2005 Conventional Assessment (DDS 69-L).
  • 1995 Assessment (
  • ...
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Web Application
/data-tools/national-water-information-system-nwis-mapper

National Water Information System (NWIS) Mapper

NWIS Mapper screenshot
March 5, 2019

The NWIS mapper provides access to over 1.5 million sites contained in the USGS National Water Information System (NWIS), including sites where current and historical surface-water, groundwater, springs, and atmospheric data has been collected. Users can search by site type, data type, site number, or place.

Web Application
/data-tools/test-data-and-tools-tom-gushue

TEST Data and Tools - Tom Gushue

TEST - Grand Canyon Sandbar Monitoring
December 11, 2018

Grand Canyon Sandbar Monitoring

The Grand Canyon Monitoring and Research Center, in conjunction with Northern Arizona University, monitors changes to sandbars along the Colorado River downstream of Glen Canyon Dam near Page, Arizona.  Click here to launch the sandbar monitoring website and associated data applications for this on-going project.

GIS Data
/data-tools/downloadable-data-northern-arizona-oil-and-gas-assessments

Downloadable Data for Northern Arizona Oil and Gas Assessments

Image of data download web page
December 6, 2018

GIS Data for Northern Arizona Oil and Gas Assessments 

GIS Data
/data-tools/downloadable-data-southern-arizona-southwestern-new-mexico-oil-and-gas-assessments

Downloadable Data for Southern Arizona-Southwestern New Mexico Oil and Gas Assessments

Image of data download web page
December 6, 2018

GIS Data for Southern Arizona-Southwestern New Mexico Oil and Gas Assessments 

GIS Data
/data-tools/downloadable-data-paradox-basin-oil-and-gas-assessments

Downloadable Data for Paradox Basin Oil and Gas Assessments

Image of data download web page
November 29, 2018

Downloadable Data for Paradox Basin Oil and Gas Assessments 

Other
/data-tools/integrated-software-imagers-and-spectrometers

Integrated Software for Imagers and Spectrometers

USGS
November 28, 2018

This is the home page for ISIS, a digital image processing software package. The focus of the software is to manipulate imagery collected by current and past NASA and International planetary missions sent throughout our Solar System.

Web Application
/data-tools/astropedia-product-search

Astropedia Product Search

Astropedia Logo
October 12, 2018

Search Astropedia for Products.

Science Datasets
/data-tools/reanalysis-selected-archived-nure-hssr-sediment-and-soil-samples-arizona-california-idaho

Reanalysis of Selected Archived NURE-HSSR Sediment and Soil Samples from Arizona, California, Idaho, Montana, Nevada, New Mexico, and Utah

USGS
October 5, 2018

Beginning in November of 2015, a project was undertaken to reanalyze approximately 60,000 archived sample splits collected as part of the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) project from selected areas in Arizona, California, Idaho, Montana, Nevada, New Mexico, and Utah. A small amount (approximately 0.25 g) of sieved -75 micron s

Web Application
/data-tools/map-projection-web

Map Projection On the Web

USGS
September 28, 2018

While some instrument teams provide science-ready versions of their data, many other archives must first be processed by the individual researcher. POW provides users with calibrated cartographic images that can be used for geologic mapping, analysis in a Geographic Image System (GIS), change detection, merging of dissimilar instrument images, and use in a host of other scientific applications.

Web Application
/data-tools/map-a-planet-2

Map a Planet 2

Map a Planet 2 logo
September 21, 2018

Welcome to the new Map-A-Planet 2

MAP2 allows users to select global image mosaics, which can then be map projected, clipped to extents, have algebra functions against the image bands, and then converted to the user’s desired file format. Quickly browse ALL available products

Web Application
/data-tools/2015-year-dwarf-planets

2015: The Year of the Dwarf Planets

RPIF Logo
September 19, 2018

Interactive web app that takes you through the history of Dwarf Planets in our Solar System from the 1700's to 2015.

Web Application
/data-tools/gazetteer-planetary-nomenclature

Gazetteer of Planetary Nomenclature

IAU Logo
September 10, 2018

Planetary nomenclature, like terrestrial nomenclature, is used to uniquely identify a feature on the surface of a planet or satellite so that the feature can be easily located, described, and discussed. This gazetteer contains detailed information about all names of topographic and albedo features on planets and satellites (and some planetary ring and ring-gap systems) that the International Astro

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Application to explore US Oil and Gas Assessments
March 19, 2019

This map shows the provinces assessed by the USGS for undiscovered oil and gas resources. 

MRCTR Logo
November 28, 2018

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, tools, programs...

Mercury global mosaic using flyby MESSENGER data
November 9, 2018

This mosaic represents the best geodetic map of Mercury's surface to date. MESSENGER's three flybys alone provide 90.90% of the data in the global mosaic (see Table above). Although MESSENGER went in to safe mode during the third flyby, the approach imaging was acquired and contributes ~6.82% additional coverage from earlier versions. Only the poles remain to be imaged, some of which...

Kaguya MI Olivine Snap
November 9, 2018

This page introduces the Kaguya Multiband Imager derived spectral and derived mineral maps by the Japan Aerospace Exploration Agency (JAXA) and the University of Hawaii. The mosaics were created from topographically-corrected MI reflectance data acquired by the JAXA SELENE/Kaguya mission (see Ohtake et al., 2013) from the Kaguya Archive MI MAP processing level version 2 (MI MAP_02) products.

USGS
November 9, 2018

This project focused on geometric restoration of hyperspectral imagery from the Moon Mineralogy Mapper (M3 or M3) instrument that flew as a guest instrument on the Indian Space Research Organization’s (ISRO) Chandrayaan-1 (Ch1) spacecraft (e.g., Goswami and Annadurai, 2009; Pieters et al., 2009; Boardman et al., 2011; Green et al., 2011). The primary objective of this work is to geometrically...

Clementine Comparison
November 9, 2018

The Clementine near-infrared (NIR) images have been made available in two near-global (70° N to 70° S) reduced-resolution mosaics. The two versions include a standard calibrated and empirically calibrated multi-spectral (6-band) ISIS cube at 500 m/pixel spatial resolution.

Pluto New Horizons Global Mosaic 300m
November 5, 2018

New Horizons launched on Jan. 19, 2006 as part of NASA’s New Frontiers Program. The spacecraft will help scientists back on Earth study the surface and atmosphere of the dwarf planet Pluto, its moons and objects in the Kuiper belt—a region of our solar system beyond Neptune containing tens of thousands of objects. The USGS Astrogeology Science Center is committed to NASA’s New Horizons mission. 

Moon Apollo Image Processing
November 5, 2018

In the early 1970s, specialized cameras onboard the Command Modules of the last three Apollo missions (15, 16, 17) photographed nearly 25% of the Moon in stunning detail. Today, scientists from Flagstaff’s U.S. Geological Survey, Arizona State University, and NASA are working together to reconstruct the lunar surface from these nearly 50-year-old photographs.

Mercury MESSENGER Global DEM 665m (64ppd) v2 Oct. 2016
November 5, 2018

From the USGS press release: 

The first topographic map of Mercury was released by the U.S. Geological Survey, Arizona State University, Carnegie Institute of Washington, Johns Hopkins University Applied Physics Laboratory and NASA. This high-resolution map provides the first comprehensive view of Mercury’s entire surface, illustrating the planet’s craters, volcanoes and tectonic landforms...

Themis global thermal-inertia tile map
November 5, 2018

This product is a global thermal inertia mosaic of Mars generated from high-resolution Thermal Emission Imaging System (THEMIS) nighttime infrared images (Christensen et al., 2004; Fergason et al., 2006a) that allows the identification, assessment, and global correlation of martian surface materials. The higher spatial resolution of THEMIS data (100 m per pixel), relative to Thermal Emission...

Kaguya TC Ortho V02 Global Mosaic 474m (64ppd)
November 5, 2018

The Japan Aerospace Exploration Agency (JAXA) launched "KAGUYA (SELENE)" to obtain scientific data of the lunar origin and evolution and to develop the technology for the future lunar exploration. With permission from JAXA, researchers at the U.S. Geological Survey (USGS) Astrogeology Science Center have compiled and are releasing multiple near-global mosaics derived from data acquired by the...

Gusev Crater Thermal Emission Imaging System (THEMIS) Infrared mosaic
November 5, 2018

In 2003-2005, the USGS worked under the guidance of NASA's Mars Critical Data Products Initiative to conduct research on how controlled large area or global 2001 Mars Odyssey THEMIS IR image mosaics could be generated. The products listed here represent a sampling of the significant data files generated during that research.

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Year Published: 2018

Groundwater-storage change and land-surface elevation change in Tucson Basin and Avra Valley, south-central Arizona--2003-2016

The U.S. Geological Survey monitors groundwater-storage change and land-surface elevation change caused by groundwater withdrawal in Tucson Basin and Avra Valley—the two most populated alluvial basins within the Tucson Active Management Area. The Tucson Active Management Area is one of five active management areas in Arizona established by the...

Carruth, Robert L.; Kahler, Libby M.; Conway, Brian D.
Carruth, R.L., Kahler, L.M., and Conway, B.D., 2018, Groundwater-storage change and land-surface elevation change in Tucson Basin and Avra Valley, south-central Arizona—2003–2016: U.S. Geological Survey Scientific Investigations Report 2018–5154, 34 p., https://doi.org/10.3133/sir20185154.

Year Published: 2018

Bat community response to silvicultural treatments in bottomland hardwood forests managed for wildlife in the Mississippi Alluvial Valley

Silvicultural treatments (e.g., selective timber harvests) that are prescribed to promote wildlife habitat are intended to alter the physical structure of forests to achieve conditions deemed beneficial for wildlife. Such treatments have been advocated for management of bottomland hardwood forests on public conservation lands in the Mississippi...

Ketzler, Loraine P.; Comer, Christopher E.; Twedt, Daniel J.
Ketzler, L. P., Comer, C. E., and Twedt, D. J., 2018, Bat community response to silvicultural treatments in bottomland hardwood forests managed for wildlife in the Mississippi Alluvial Valley: Forest Ecology and Management, v. 417, p. 40-48. https://doi.org/10.1016/j.foreco.2018.02.047

Year Published: 2017

Magnetic monitoring in Saguaro National Park

On a sandy, arid plain, near the Rincon Moun­tain Visitor Center of Saguaro National Park, tucked in among brittlebush, creosote, and other hardy desert plants, is an unusual type of observatory—a small unmanned station that is used for monitor­ing the Earth’s variable magnetic field. Named for the nearby city of Tucson, Arizona, the observatory...

Love, Jeffrey J.; Finn, Carol A.; Gamez Valdez, Yesenia C.; Swann, Don
Love, J.J., Finn, C.A., Gamez Valdez, Y.C., Swann, Don, 2017, Magnetic monitoring in Saguaro National Park: U.S. Geological Survey Fact Sheet 2017–3035, 2 p., https://doi.org/10.3133/fs20173035.

Year Published: 2017

Geochemistry and hydrology of perched groundwater springs: assessing elevated uranium concentrations at Pigeon Spring relative to nearby Pigeon Mine, Arizona (USA)

The processes that affect water chemistry as the water flows from recharge areas through breccia-pipe uranium deposits in the Grand Canyon region of the southwestern United States are not well understood. Pigeon Spring had elevated uranium in 1982 (44 μg/L), compared to other perched springs (2.7–18 μg/L), prior to mining operations at the nearby...

Beisner, Kimberly R.; Paretti, Nicholas V.; Tillman, Fred; Naftz, David L.; Bills, Donald; Walton-Day, Katie; Gallegos, Tanya J.
Beisner, K.R., Paretti, N.V., Tillman, F.D., Naftz, D.L., Bills, D.J., Walton-Day, K., and Gallegos, T.J., 2017, Geochemistry and hydrology of perched groundwater springs: assessing elevated uranium concentrations at Pigeon Spring relative to nearby Pigeon Mine, Arizona (USA), Hydrogeology Journal, vol. 25, issue 2, p. 539-556.

Year Published: 2016

Element concentrations in surface soils of the Coconino Plateau, Grand Canyon region, Coconino County, Arizona

This report provides the geochemical analyses of a large set of background soils collected from the surface of the Coconino Plateau in northern Arizona. More than 700 soil samples were collected at 46 widespread areas, sampled from sites that appear unaffected by mineralization and (or) anthropogenic contamination. The soils were analyzed for 47...

Van Gosen, Bradley S.
Van Gosen, B.S., 2016, Element concentrations in surface soils of the Coconino Plateau, Grand Canyon region, Coconino County, Arizona: U.S. Geological Survey Open-File Report 2016–1160, 9 p. http://dx.doi.org/10.3133/ofr20161160.

Year Published: 2016

Historical files from Federal Government mineral exploration-assistance programs, 1950 to 1974

The Defense Minerals Administration (DMA), Defense Minerals Exploration Administration (DMEA), and Office of Minerals Exploration (OME) mineral exploration programs were active over the period 1950–1974. Under these programs, the Federal Government contributed financial assistance in the exploration for certain strategic and critical minerals. The...

Frank, David G.
Frank, D.G., 2016, Historical files from Federal Government mineral exploration-assistance programs, 1950 to 1974: U.S. Geological Survey Data Series 1004, http://dx.doi.org/10.3133/ds1004.

Year Published: 2014

Mapping and monitoring Mount Graham red squirrel habitat with Lidar and Landsat imagery

The Mount Graham red squirrel (Tamiasciurus hudsonicus grahamensis) is an endemic subspecies located in the Pinaleño Mountains of southeast Arizona. Living in a conifer forest on a sky-island surrounded by desert, the Mount Graham red squirrel is one of the rarest mammals in North America. Over the last two decades, drought, insect...

Hatten, James R.
Mapping and monitoring Mount Graham red squirrel habitat with Lidar and Landsat imagery; 2014; Article; Journal; Ecological Modelling; Hatten, James R.

Year Published: 2014

Riparian restoration framework for the Upper Gila River, Arizona

This technical report summarizes the methods and results of a comprehensive riparian restoration planning effort for the Gila Valley Restoration Planning Area, an approximately 53-mile portion of the upper Gila River in Arizona (Figure 1-1). This planning effort has developed a Restoration Framework intended to deliver science-based guidance on...

Orr, Bruce K.; Leverich, Glen L.; Diggory, Zooey E.; Dudley, Tom L.; Hatten, James R.; Hultine, Kevin R.; Johnson, Matthew P.; Orr, Devyn A.
Riparian restoration framework for the Upper Gila River, Arizona; 2014; Organization Series; Orr, Bruce K.; Leverich, Glen L.; Diggory, Zooey E.; Dudley, Tom L.; Hatten, James R.; Hultine, Kevin R.; Johnson, Matthew P.; Orr, Devyn A.

Year Published: 2011

Probability and volume of potential postwildfire debris flows in the 2011 Wallow burn area, eastern Arizona

This report presents a preliminary emergency assessment of the debris-flow hazards from drainage basins burned in 2011 by the Wallow wildfire in eastern Arizona. Empirical models derived from statistical evaluation of data collected from recently burned drainage basins throughout the intermountain western United States were used to estimate the...

Ruddy, Barbara C.
Probability and volume of potential postwildfire debris flows in the 2011 Wallow burn area, eastern Arizona; 2011; OFR; 2011-1214; Ruddy, Barbara C.

Year Published: 2011

Probability and volume of potential postwildfire debris flows in the 2011 Horseshoe II burn area, southeastern Arizona

This report presents a preliminary emergency assessment of the debris-flow hazards from drainage basins burned in 2011 by the Horseshoe II wildfire in southeastern Arizona. Empirical models derived from statistical evaluation of data collected from recently burned drainage basins throughout the intermountain western United States were used to...

Ruddy, Barbara C.
Probability and volume of potential postwildfire debris flows in the 2011 Horseshoe II burn area, southeastern Arizona; 2011; OFR; 2011-1197; Ruddy, Barbara C.

Year Published: 2011

Probability and volume of potential postwildfire debris flows in the 2011 Monument burn area, southeastern Arizona

This report presents a preliminary emergency assessment of the debris-flow hazards from drainage basins burned by the Monument wildfire in southeastern Arizona, in 2011. Empirical models derived from statistical evaluation of data collected from recently burned drainage basins throughout the intermountain Western United States were used to...

Ruddy, Barbara C.; Verdin, Kristine L.
Probability and volume of potential postwildfire debris flows in the 2011 Monument burn area, southeastern Arizona; 2011; OFR; 2011-1181; Ruddy, Barbara C. ; Verdin, Kristine L.

Year Published: 2010

Hydrological, geological, and biological site characterization of breccia pipe uranium deposits in Northern Arizona

On July 21, 2009, U.S. Secretary of the Interior Ken Salazar proposed a two-year withdrawal of about 1 million acres of Federal land near the Grand Canyon from future mineral entry. These lands are contained in three parcels: two parcels on U.S. Bureau of Land Management land to the north of the Grand Canyon (North and East Segregation Areas) and...

Alpine, Andrea E.
Hydrological, Geological, and Biological Site Characterization of Breccia Pipe Uranium Deposits in Northern Arizona; 2010; SIR; 2010-5025; Alpine, Andrea E., ed.

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USGS
September 10, 2018

This is the home page for ISIS, a digital image processing software package. The focus of the software is to manipulate imagery collected by current and past NASA and International planetary missions sent throughout our Solar System.

Filter Total Items: 192
Image from an application that navigates users through USGS National Oil and Gas Assessment Provinces
November 14, 2018

National Oil and Gas Assessment Provinces

This is a graphic from the USGS National Oil and Gas Assessment Explorer application, which allows user to drill into 70 oil and gas assessment provinces throughout the United States.

Flooding at Vekol Wash, Arizona
October 2, 2018

Flooding at Vekol Wash, Arizona

Flooding at Vekol Wash today, south of Phoenix, following remnant rains from Hurricane Rosa. 

September 27, 2018

A USGS guide for finding and interpreting high-water marks (AD)

High-water marks provide valuable data for understanding recent and historical flood events. The proper collection and recording of high-water mark data from perishable and preserved evidence informs flood assessments, research, and water resource management. This video provides guidance for skilled high-water mark identification, including marks left behind in natural and

...
David Scott(right) and James Irwin(left) in the Lunar Roving Vehicle trainer
September 5, 2018

David Scott and James Irwin in the Lunar Roving Vehicle "Grover"

In preperation for Apollo 15, David Scott and James Irwin trained with a training version of the Lunar Rover known as the "Grover". Apollo 15 was the first mission to bring a rover. This allowed the astronauts to cover a larger distance and explore a larger area. 

A RestoreNet garden with plots covered by white cloth.
August 31, 2018

RestoreNet garden testing seedling establishment.

The RestoreNet gardens test seedlings of priority restoration species across the Southwest. This is a recently installed garden located in the juniper woodlands of the Colorado Plateau. The experiemental network will support land managers by providing insight into various restoration techniques, including testing seedlings vs seeds.

A group of field workers installs an experimental garden.
August 16, 2018

Installing a restoration field trial site

These workers are planting seedlings as part of the restoration field trial network. Each garden in the network is examining seedlings and seeds in conjunction with restoration treatments to better understand how

...
Bare ground with 2x2 meter square plots of various restoration treatments.
August 16, 2018

Seeding treatment experiment

View of a recently installed Restoration Field Trial Network site in the rangelands of Northern Arizona. This part of the site contains the seeding treatments: mulch, ConMods (metal crosses), pits, and two

...
A restoration field trial site on red soils, adjacent to buttes.
August 16, 2018

A RestoreNet Garden on the Colorado Plateau

A completed restoration field trial site just after installation. Half of the site is seeded, and the other half had plants and weed cloth (white fabric) installed. RAMPS will be collecting data on this site for

...
June 30, 2018

Understanding Floods | Long-term Streamflow Data Collection (AD)

The USGS is developing methods to improve data collection during floods to gain new insight into the rise and fall of flood waters. In the past, the only data left behind after a flood was how high the water got, or the peak of the flood. This video presents the methodology that hydrologists are using to set up a Continuous Slope-area Reach in remote areas that are

...
June 30, 2018

Understanding Floods | Long-term Streamflow Data Collection

The USGS is developing methods to improve data collection during floods to gain new insight into the rise and fall of flood waters. In the past, the only data left behind after a flood was how high the water got, or the peak of the flood. This video presents the methodology that hydrologists are using to set up a Continuous Slope-area Reach in remote areas that are

...
May 11, 2018

Image of the Week - Rattlesnake Fire, AZ

Landsat and Sentinel sensors capture the Rattlesnake Fire as it burns in Arizona.

At the USGS EROS Center, we study land change, operate the Landsat satellites, and maintain the longest, continuously acquired collection of images of the Earth's land surface.

USGS EROS Center (https://eros.usgs.gov/)

May 8, 2018

Advances in Streamgaging | Reach-Scale Monitoring Experiment (2 of 2)

In this second installment of a two part series, The Arizona Water Science Center, in partnership with the USDA Agricultural Research Service, reviews the results of an experiment to verify remote methods that measure flood flows at the Walnut Gulch Experimental Watershed. What makes this experiment unique are the super-critical runoff flumes that precisely measure

...
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A huge canyon surrounded by deep-set cliffs opens to reveal a sunny gorge and part of the Colorado River.
April 11, 2019

A new study shows that mysterious cycles in salinity in the lower Colorado River are a result of precipitation patterns in the headwaters of the upper basin more than a thousand river miles away. The salinity levels generally repeat about every 10 years.

This is a photo of a view of Lake Powell's south shore.
March 18, 2019

Mercury concentrations within Lake Powell are highest in side canyons within the lower portion of the reservoir, according to a new U.S. Geological Survey report. This finding is part of a study to better understand why mercury concentrations in striped bass are higher in the lower part of the reservoir.

rock dam
December 7, 2018

Laura Norman's Aridland Water Harvesting Study helps lead a tour of a restoration and monitoring project at the Boy Scouts of America, Heard Scout Pueblo (HSP) in Phoenix, Arizona.

Photo of desert landscape with arch formations in foreground and mountains in background
November 26, 2018

Adaptation and assessment practitioners gathered at the inaugural Southwest Adaptation Forum (SWAF) in October 2018, to identify shared challenges, lessons learned, and opportunities for future collaboration.

Drill rig to collect sediment samples on Lake Powell.
November 20, 2018

Reporters: RSVP to Visit Coring Site on Lake Powell

Flooding at Vekol Wash, Arizona
October 2, 2018

Reporters: Do you want to accompany a USGS field crew as they measure flooding? Please contact Jennifer LaVista or Jim Leenhouts

USGS
March 29, 2018

Clarifying Latitude and Longitude for Planets besides Earth

Low-Flying Helicopter
March 6, 2018

Note to Editors: In the public interest, and in accordance with FAA regulations, the USGS is announcing this low-level airborne project. Your assistance in informing the local communities is appreciated.

Dry wash in San Rafael Desert with white surface salts
January 25, 2018

Salinity loads that originate from groundwater within the Upper Colorado River Basin have decreased from 1986-2011, according to a new U.S. Geological Survey study done in cooperation with the Colorado River Basin Salinity Control Program.

Prairie dog and SPV bait
December 13, 2017

About 70 percent of wild prairie dogs successfully ingested baits containing an oral sylvatic plague vaccine, or SPV, that were distributed throughout their habitats, according to a new U.S. Geological Survey study.

Lake Powell
December 12, 2017

Develop a new bathymetry map of Lake Powell, UT-AZ, and characterize shallow sediment deposition near the mouths of the San Juan and Colorado Rivers. Bathymetric data, acoustic backscatter imagery, and limited CHIRP sub-bottom data were collected by the USGS Utah Water Science Center (UTWSC) and Woods Hole Coastal and Marine Science Center (WHCMSC) within Lake Powell, October - November, 2017.

This HiRISE image cutout shows Recurring Slope Lineae in Tivat crater on Mars in enhanced color.
November 20, 2017

Dark features previously proposed as evidence for significant liquid water flowing on Mars have now been identified as granular flows, where sand and dust move rather than liquid water, according to a new article published in Nature Geoscience by the U.S. Geological Survey.

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