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: 138
Date published: June 11, 2019
Status: Active

GCMRC Data Releases

Data releases made available by GCMRC can be found here as they are published via the USGS Fundamental Science Practices (FSPs).  Individual science product links will take users to the USGS ScienceBase website for each entry.

 

Click on Data and Tools Tab to see list of Data Releases.

Date published: May 13, 2019
Status: Completed

Baerbel Lucchitta

Dr. Baerbel Lucchitta was one of the first women in the field of Astrogeology. She started her career by mapping the Moon and instructing the Apollo Astronauts. She worked extensively on the Valles Marineris canyons on Mars, is a vigorous protagonist of glacial flow and other ice-related features on Mars, and was awarded the Geological Society of America, Planetary Geology Division, G.K....

Date published: April 30, 2019
Status: Active

GCMRC Scientist & Staff Directory

Below is a list of GCMRC scientists and key project support staff with their contact information provided.  Names and positions are linked to each individual's USGS staff profile page (where applicable), so click there to find out more about each person's background, research interests and science products.  Clicking on email addresses will generate a new email message to that individual....

Date published: April 29, 2019
Status: Active

GCMRC Data and Tools

The Grand Canyon Monitoring and  Research Center offers a collection of data resources and online tools -- including web maps, applications, and other content -- that convey scientific information related to on-going monitoring of the Colorado River.  Some applications are a culmination of long-term monitoring work, while others are developed around more a specific set of information usually...

Date published: April 24, 2019
Status: Active

Grand Canyon Monitoring and Research Projects

The Grand Canyon Monitoring and Research Center currently functions under a Triennial Work Plan (TWP) which is thoroughly reviewed and vetted both internally within the Center and through the GCDAMP Technical Work Group (TWG) and the Adaptive Management Work Group (AMWG).  These advisory panels have been a part of the Glen Canyon Dam...

Date published: March 27, 2019
Status: Completed

Grover Photo Collection

The Apollo Lunar Roving Vehicle was an engineering marvel, 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 could...

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.

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.

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.

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:

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:

 

Filter Total Items: 56
Date published: June 12, 2019

GCMRC REST Services Page

The Geospatial team of Grand Canyon Monitoring and Research Center maintains an enterprise GIS system built upon ESRI ArcGIS Server and Portal applications.  From this platform, geospatial content can be consumed in a variety of forms, from custom-built web applications to content hosted on ESRI's ArcGIS Online to direct access of web map services provided here on our REST services page.

Date published: May 10, 2019

Predicted Shorelines for High Flows on the Colorado River Application

This application highlights modeled flows of the Colorado River for a discharge of 41,000 cubic feet per second (cfs) that is approximate to recent (2012 - 2018) and future anticipated water releases associated with a High Flow Experiments conducted from Glen Canyon Dam near Page, Arizona.  These data are to help visualize the water levels during High Flow Events in relation to other map...

Date published: April 30, 2019

Sandbar Monitoring Sites - Remote Camera Photographs Application

GCMRC and Northern Arizona University have engaged in long-term monitoring of 45 sandbar sites along the Colorado River in Grand Canyon for close to three decades.  Remote cameras have been established to monitor sandbar changes in between site surveys that occur every Fall.   This application provides access to thousands of photos, with an option to view photos around specific high flow...

Date published: April 29, 2019

Geospatial Data Abstraction Library (GDAL)

The Geospatial Data Abstraction Library is a translator library for raster geospatial data formats that is released under an X/MIT style Open Source license by the Open Source Geospatial Foundation. As a library, it presents a single abstract data model for all supported formats. It also comes with a variety of useful...

Date published: April 29, 2019

Astro Web Maps

Our Web Mapping Services (WMS) and Web Feature Services (WFS) are based on Open Geospatial Consortium standards and allow capable mapping clients to view full-resolution planetary mosaicked Basemaps.  Besides being available for community use, these services are critical for many of our others...

Date published: January 1, 2019

Surface Materials Data from Breccia-Pipe Uranium Mine and Reference Sites, Arizona, USA

This data release includes elemental analysis of soil samples collected at breccia-pipe uranium mines, at one undeveloped breccia-pipe uranium deposit, and at a reference site in northern Arizona. Samples were collected near the Arizona 1, Canyon, Kanab North, and Pinenut uranium mines, over the EZ2 breccia-pipe uranium deposit, and at the Little Robinson Tank reference site. Sampl

Date published: December 6, 2018

Downloadable Data for Northern Arizona Oil and Gas Assessments

GIS Data for Northern Arizona Oil and Gas Assessments 

Date published: December 6, 2018

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

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

Date published: November 29, 2018

Downloadable Data for Paradox Basin Oil and Gas Assessments

Downloadable Data for Paradox Basin Oil and Gas Assessments 

Date published: November 28, 2018

Integrated Software for Imagers and Spectrometers

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.

Date published: October 12, 2018

Astropedia Product Search

Search Astropedia for Products.

Filter Total Items: 38
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.

Mars Themis Day Mosaics
November 5, 2018

The objective of this work is to assemble and cartographically control Thermal Emission Imaging System (THEMIS; Christensen et al. 2004) daytime infrared (IR) and nighttime IR images. In a cartographically controlled mosaic, individual images are registered to one another so that all feature boundaries align. This intermediate mosaic (a “semi-controlled” mosaic) is then registered to a known...

Mars Themis Night Mosaics
November 5, 2018

The objective of this work is to assemble and cartographically control Thermal Emission Imaging System (THEMIS; Christensen et al. 2004) daytime infrared (IR) and nighttime IR images. In a cartographically controlled mosaic, individual images are registered to one another so that all feature boundaries align. This intermediate mosaic (a “semi-controlled” mosaic) is then registered to a known...

Tile Map MOLA
November 5, 2018

The objective of this work is to assemble and cartographically control Thermal Emission Imaging System (THEMIS; Christensen et al. 2004) daytime infrared (IR) and nighttime IR images. In a cartographically controlled mosaic, individual images are registered to one another so that all feature boundaries align. This intermediate mosaic (a “semi-controlled” mosaic) is then registered to a known...

Perspective views of the central peak of Tsiolkovskiy crater Digital elevation data derived from Apollo Panoramic images
November 5, 2018

USGS LMMP products will soon be available at the LMMP Portal. These include very large high resolution DTMs and orthomosaics of close to 50 key sites on the lunar surface, and high resolution controlled polar mosaics. These products constitute an important initial step in processing LRO datasets and should greatly facilitate the exploration and study of these significant lunar sites.

Portion of the Coprates quad which includes Valles Marineris
November 5, 2018

This global image map of Mars has a resolution of 256 pixels/degree (scale approximately 231 m/pixel at the equator). The black-and-white mosaic is processed to emphasize local topographic features. This mosaic, known as Mars Digital Image Model (MDIM) 2.1, replaces two earlier mosaics produced by the USGS from the same set of approximately 4600 Viking Orbiter images...

Mars Control Vectors
November 5, 2018

Distributed here are control network data for solar system bodies (planets, moons, and asteroids) other than the Earth. Each control network is essentially a set of photogrammetric or radargrammetric solution (input and output) files. The input files consist of, aside from a priori information, measurements of common points (control points, or sometimes tie points) on images of...

Mars MOLA Tracks
November 5, 2018

The U.S. Geological Survey has recently completed a final revised version of its 231 m/pixel global Viking image mosaic of Mars that has substantially improved geodetic accuracy compared to versions released in 1991 and 2001. This mosaic, known as MDIM 2.1, is currently available in the USGS ISIS file format and will be formatted and submitted to the NASA Planetary Data System (PDS) in...

THEMIS nighttime infrared mosaic of Gale crater, landing site of the Mars Science Laboratory rover
November 5, 2018

The main science objective of the Mars Science Laboratory (MSL) is to explore and quantitatively assess the habitability and environmental history of a local region on the martian surface. This mission will use a variety of instruments carried on a rover platform that are designed to assess the biological potential, characterize the geology, investigate planetary processes that influence...

A full image scan of a Zond8 photograph
November 5, 2018

Photographic hardcopy scans of 1970 photographs captured by a Soyuz 7K-L1 unmanned spacecraft on the soviet Zond8 mission. This data along with data from Apollo, Lunar Orbiter and Galileo missions is part of a collection commonly referred to as the Lunar Consortium Data.

Horizontal position differences for Clementine images
November 5, 2018

Lunar Orbiter Lunar Control Network 2004

The USGS worked to digitize and restore a global set of Lunar Orbiter images and to assemble this into a global digital Lunar Orbiter mosaic of the Moon. A separate Lunar Orbiter Control network is being created as part of this work. For additional information, see the Lunar Orbiter Digitization Project [Gaddis et al., 2001a, 2001b, 2003; Becker...

Filter Total Items: 126
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Year Published: 2008

Ground-Water, Surface-Water, and Water-Chemistry Data, Black Mesa Area, Northeastern Arizona - 2006-07

The N aquifer is the major source of water in the 5,400 square-mile Black Mesa area in northeastern Arizona. Availability of water is an important issue in northeastern Arizona because of continued water requirements for industrial and municipal use and the needs of a growing population. Precipitation in the Black Mesa area is typically about 6 to...

Truini, Margot; Macy, J.P.
Ground-Water, Surface-Water, and Water-Chemistry Data, Black Mesa Area, Northeastern Arizona - 2006-07; 2008; OFR; 2008-1324; Truini, Margot; Macy, J. P.

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Year Published: 2008

Use of Superposition Models to Simulate Possible Depletion of Colorado River Water by Ground-Water Withdrawal

According to the 'Law of the River', wells that draw water from the Colorado River by underground pumping need an entitlement for the diversion of water from the Colorado River. Consumptive use can occur through direct diversions of surface water, as well as through withdrawal of water from the river by underground pumping. To develop methods for...

Leake, Stanley A.; Greer, William; Watt, Dennis; Weghorst, Paul
Use of Superposition Models to Simulate Possible Depletion of Colorado River Water by Ground-Water Withdrawal; 2008; SIR; 2008-5189; Leake, Stanley A.; Greer, William; Watt, Dennis; Weghorst, Paul

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Year Published: 2007

Dissolved solids in basin-fill aquifers and streams in the southwestern United States

The U.S. Geological Survey National Water-Quality Assessment Program performed a regional study in the Southwestern United States (Southwest) to describe the status and trends of dissolved solids in basin-fill aquifers and streams and to determine the natural and human factors that affect dissolved solids. Basin-fill aquifers, which include the...

Anning, David W.; Bauch, Nancy J.; Gerner, Steven J.; Flynn, Marilyn E.; Hamlin, Scott N.; Moore, Stephanie J.; Schaefer, Donald H.; Anderholm, Scott K.; Spangler, Lawrence E.
Dissolved Solids in Basin-Fill Aquifers and Streams in the Southwestern United States; 2007; SIR; 2006-5315; Anning, David W.; Bauch, Nancy J.; Gerner, Steven J.; Flynn, Marilyn E.; Hamlin, Scott N.; Moore, Stephanie J.; Schaefer, Donald H.; Anderholm, Scott K.; Spangler, Lawrence E.

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Year Published: 2007

Ground-Water, Surface-Water, and Water-Chemistry Data, Black Mesa Area, Northeastern Arizona-2005-06

The N aquifer is the major source of water in the 5,400 square-mile Black Mesa area in northeastern Arizona. Availability of water is an important issue in northeastern Arizona because of continued water requirements for industrial and municipal use and the needs of a growing population. Precipitation in the Black Mesa area averages about 6 to 14...

Truini, Margot; Macy, J.P.
Ground-Water, Surface-Water, and Water-Chemistry Data, Black Mesa Area, Northeastern Arizona-2005-06; 2007; OFR; 2007-1041; Truini, Margot; Macy, J.P.

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Year Published: 2007

Rapid estimation of recharge potential in ephemeral-stream channels using electromagnetic methods, and measurements of channel and vegetation characteristics

To classify recharge potential (RCP) in ephemeral-stream channels, a method was developed that incorporates information about channel geometry, vegetation characteristics, and bed-sediment apparent electrical conductivity (??a). Recharge potential is not independently measurable, but is instead formulated as a site-specific, qualitative parameter...

Callegary, J.B.; Leenhouts, J.M.; Paretti, N.V.; Jones, Christopher A.
Rapid estimation of recharge potential in ephemeral-stream channels using electromagnetic methods, and measurements of channel and vegetation characteristics; 2007; Article; Journal; Journal of Hydrology; Callegary, J. B.; Leenhouts, J. M.; Paretti, N. V.; Jones, C. A.

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Year Published: 2006

Ground-water, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona--2004-05

The N aquifer is the major source of water in the 5,400-square-mile area of Black Mesa in northeastern Arizona. Availability of water is an important issue in this area because of continued industrial and municipal use, a growing population, and precipitation of about 6 to 14 inches per year. The monitoring program in the Black Mesa area has...

Truini, Margot; Macy, J.P.
Ground-water, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona--2004-05; 2006; OFR; 2006-1058; Truini, Margot; Macy, J. P.

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Year Published: 2006

Electrical resistance sensors record spring flow timing, Grand Canyon, Arizona

Springs along the south rim of the Grand Canyon, Arizona, are important ecological and cultural resources in Grand Canyon National Park and are discharge points for regional and local aquifers of the Coconino Plateau. This study evaluated the applicability of electrical resistance (ER) sensors for measuring diffuse, low-stage (<1.0 cm)...

Adams, E.A.; Monroe, S.A.; Springer, Abraham E.; Blasch, K.W.; Bills, D.J.
Electrical resistance sensors record spring flow timing, Grand Canyon, Arizona; 2006; Article; Journal; Ground Water; Adams, E. A.; Monroe, S. A.; Springer, A. E.; Blasch, K. W.; Bills, D. J.

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Year Published: 2005

Lithology and thickness of the Carmel Formation as related to leakage between the D and N aquifers, Black Mesa, Arizona

Truini, Margot; Macy, J.P.
Lithology and thickness of the Carmel Formation as related to leakage between the D and N aquifers, Black Mesa, Arizona; 2005; SIR; 2005-5187; Truini, Margot; Macy, J. P.

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Year Published: 2005

Geologic, hydrologic, and chemical data from the C aquifer near Leupp, Arizona

Hoffmann, J.P.; Bills, D.J.; Phillips, J.V.; Halford, K.J.
Geologic, hydrologic, and chemical data from the C aquifer near Leupp, Arizona; 2005; SIR; 2005-5280; Hoffmann, J. P.; Bills, D. J.; Phillips, J. V.; Halford, K. J.

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Year Published: 2005

Ground-water, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona--2003-04

The N aquifer is the major source of water in the 5,400-square-mile area of Black Mesa in northeastern Arizona. Availability of water is an important issue in this area because of continued industrial and municipal use, a growing population, and precipitation of about 6 to 14 inches per year. The monitoring program in the Black Mesa area has...

Truini, Margot; Macy, Jamie P.; Porter, Thomas J.
Ground-water, surface-water, and water-chemistry data, Black Mesa area, northeastern Arizona--2003-04; 2005; OFR; 2005-1080; Truini, Margot; Macy, Jamie P.; Porter, Thomas J.

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Year Published: 2005

Water withdrawals for irrigation, municipal, mining, thermoelectric-power, and drainage uses in Arizona outside of active management areas, 1991-2000

Economic development in Arizona is largely influenced by access to adequate water supplies owing to the State's predominantly semiarid to arid climate. Water demand is met by pumping ground water from aquifers or by con-veying surface water through a system of reservoirs and canals. Water-withdrawal data provide important information on how water...

Tadayon, Saeid
Water withdrawals for irrigation, municipal, mining, thermoelectric-power, and drainage uses in Arizona outside of active management areas, 1991-2000; 2005; SIR; 2004-5293; Tadayon, Saeid

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Year Published: 2005

A spatial model of potential jaguar habitat in Arizona

The jaguar (Panthera onca) is an endangered species that occasionally visits the southwestern United States from Mexico. The number of jaguar sightings per decade has declined over the last 100 years in Arizona, USA, raising conservation concerns for the species at a local and national level. In 1997, state, federal, and local governments with...

Hatten, J.R.; Averill-Murray, A.; van Pelt, W.E.
A spatial model of potential jaguar habitat in Arizona; 2005; Article; Journal; Journal of Wildlife Management; Hatten, J. R.; Averill-Murray, A.; Van Pelt, W. E.

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A photo of a distressed desert
May 21, 2020

Disturbed desert landscape with erosion

Disturbed desert landscape with erosion

A photo of a distressed desert of the Sonoran Desert
May 21, 2020

distressed desert of the Sonoran Desert - carousal

distressed desert of the Sonoran Desert, carousal image

A photo of a field crew measuring density of grasses
May 21, 2020

Field Crew Measuring Density of Grasses

Field crew measuring cover of Lehmann Lovegrass (Eragrostis lehmanniana) and Boer Lovegrass (E. curvula var. conferta = E. chloromelas) in a desert grassland of southern Arizona. 

May 4, 2020

Image of the Week - London Bridge in Arizona

London Bridge was indeed falling down. Set to be torn apart and replaced in the 1960s, this bridge across the River Thames was purchased by businessman Robert McCulloch in April 1968 and shipped across the Atlantic, to Lake Havasu City, Arizona, billed as the world's largest antique. USGS aerial photos show the location in 1969, and in 1972, before and after the bridge's

January 23, 2020

PubTalk 1/2020 — The Rise of the USGS in Space Exploration

The Rise of the USGS in Space Exploration: How the Astrogeology Science Center is integral to the past, present, and future investigation of the Solar System.

By Justin J. Hagerty, Director of the Astrogeology Science Center

  • Every astronaut to set foot on the Moon trained with the USGS in
A group of people gather around a list of climate adaptation strategies inside of a conference room.
December 5, 2019

Collaborating on Climate Adaptation

RAMPS expands drought adaptation project with national parks in the 4-Corners area. National parks across the desert Southwest are experiencing ecological impacts due to climate change. Since late 2018, USGS RAMPS scientists have been working with Southeast Utah Group of national parks to better understand climate change impacts and build a suite of science-driven

...
Ecosystems Podcast Series Episode 5 artwork
October 3, 2019

Outstanding in the Field (Ep 5): Fish in the Grand Canyon

The USGS Ecosystems Mission Area brings you Outstanding in the Field, a series of stories about our science, our adventures, and our efforts to better understand our fish and wildlife and the ecosystems that support them. In this episode we describe some of the one-of-a-kind native fish species that call the Grand Canyon segment of the Colorado River home.
 

September 4, 2019

USA National Phenology Network — Partner to Advance Science Decisions

Phenology – the timing of life cycle events in plants and animals and their relationship to climate - is a key component of life on earth. This video introduces the USA National Phenology Network (www.usanpn.org) - a USGS funded, national network that exists to collect, store, and share information about phenology. Scientists, managers,

July 16, 2019

Image of the Week - Moon Craters in Arizona

Before landing on the surface of the moon in 1969, astronauts Neil Armstrong and Buzz Aldrin needed a training ground that matched their destination's cratered surface.

In the U.S., that turned out to be northern Arizona. Starting in 1967, the U.S. Geological Survey used hundreds of pounds of dynamite to blast holes into the surface of ancient lava fields south of

Image screen shot of GCMRC sediment monitoring application
June 11, 2019

GCMRC sediment monitoring application landing page

Image screen shot of GCMRC sediment monitoring application

December 31, 2018

A partnership to protect critical infrastructure

This video is an introduction to the partnership between the USGS Arizona Water Science Center and the Arizona Department of Transportation, or ADOT, as it is referred to throughout the video. These two agencies are working together, using cutting edge technology and methods, to understand how flood flows interact with and impact critical infrastructure. These data will

December 31, 2018

A partnership to protect critical infrastructure (Audio-Described)

This video is an introduction to the partnership between the USGS Arizona Water Science Center and the Arizona Department of Transportation, or ADOT, as it is referred to throughout the video. These two agencies are working together, using cutting edge technology and methods, to understand how flood flows interact with and impact critical infrastructure. These data will

Filter Total Items: 190
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.

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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