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

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.

News

Date published: November 16, 2021

Uranium in Grand Canyon Region Groundwater Mostly Complies with Federal Health Standards

Nearly 95% of samples collected from 206 locations over 40 years show uranium concentrations less than the U.S. Environmental Protection Agency Maximum Contaminant Level for drinking water, according to a new U.S. Geological Survey report.

Date published: October 28, 2021

Groundwater Flow to Colorado River May Decline by a Third over Next 30 Years

A new study projects that a hot and dry future climate may lead to a 29% decline in Upper Colorado River Basin “baseflow” at the basin outlet by the 2050s, affecting both people and ecosystems.

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Date published: April 2, 2021
Status: Active

Geologic Mapping of the Lower Colorado River System

This is a comprehensive scientific investigation of the geologic history and framework of the lower Colorado River. We are using geologic mapping in combination with stratigraphic, geochronologic, and geophysical studies to develop a holistic understanding of the river’s origin, the structural history of the landscape through which it flows, and the stratigraphic and geomorphic consequences of...

Contacts: Ryan Crow, Ph.D., P. Kyle House, PhD, Tracey Felger, Philip A. Pearthree, James E. Faulds
Date published: April 1, 2021
Status: Active

Investigations of Sources of Contaminants of Concern in the San Juan River

Metals attached to suspended sediments or dissolved in river water pose a potential health risk to communities that depend on that water for agricultural and domestic uses. Exceedances of Navajo Nation surface water quality standards for metals (especially lead and arsenic) indicate that communities on the Navajo Nation along the San Juan River are exposed to this potential risk. Sources for...

Date published: March 10, 2021
Status: Active

Is timing really everything? Evaluating Resource Response to Spring Disturbance Flows

Glen Canyon Dam has altered ecological processes of the Colorado River in Grand Canyon. Before the dam was built, the Colorado River experienced seasonable variable flow rates, including springtime flooding events. These spring floods scoured the river bottom and enhanced natural processes that sustained the Colorado River ecosystem. Since the dam’s construction in 1963, springtime floods have...

Date published: September 10, 2020
Status: Active

North Phoenix aquifer monitoring with repeat microgravity

The City of Phoenix has traditionally relied on surface-water supplies from the Salt, Verde, and Colorado River watersheds. To increase water-supply resiliency and flexibility, the City is expanding its Artificial Storage and Recovery (ASR) operations in the north Phoenix area. USGS is measuring small changes in gravity caused by groundwater-storage changes to better understand where and when...

Date published: September 3, 2020
Status: Active

Southwestern Willow Flycatcher Habitat Viewer

For planning and management purposes, agencies require a web application that can locate, map, and monitor Southwestern Willow Flycatcher (flycatcher) breeding habitat across its range. The Habitat Viewer can identify potential flycatcher habitat and monitor changes caused by stressors, such as beetles, fire or drought.

Contacts: James Hatten, Kai Caraher
Date published: May 28, 2020
Status: Active

Remote Sensing and Dryland Management

Drylands (areas characterized by low precipitation, high evapotranspiration, and low soil moisture) occupy around 40-45% of the earth’s surface. Many drylands contain high biodiversity and provide essential ecosystem services (e.g., livestock forage, agricultural production, pollination) for nearly 1/3 of the world’s population who live in drylands.  Given limited precipitation and other...

Date published: February 25, 2020
Status: Active

PDS Home Page

PDS Home Page

Date published: February 25, 2020
Status: Active

PDS Project Office

PDS Project Office

Date published: February 25, 2020
Status: Active

NASA Planetary Science Division

NASA Planetary Science Division. 

Date published: January 24, 2020
Status: Active

USGS Astrogeology Planetary Photogrammetry Lab

Digital Terrain Models and Orthorectified Images Produced by the U.S. Geological Survey

The U.S. Geological Survey (USGS) Astrogeology Planetary Photogrammetry Lab offers a Digital Terrain Model (DTM) and orthorectified image production service to the scientific community to supply NASA-selected investigators with high-quality HiRISE DTMs...

Date published: January 22, 2020
Status: Active

Using Unmanned Aerial Systems (UAS) Capabilities to Help Identify Giant Salvinia (Salvinia molesta) and the effects of Salvinia weevil (Cyrtogagous salviniae)

USGS is collecting remotely sensed data to classify Salvinia molesta, a non-native aquatic species that reduces light and oxygen levels in water, making it unsuitable for fish and other aquatic plant life.

Date published: October 29, 2019
Status: Active

RPIF Digitized Film Collection

The RPIF's 15-mm film collection contains historic films related to astronaut training, equipment field tests, geological expiditions and more. Select from the videos on the right to play it. Scroll down for more videos. Videos may take a few minutes to load.

Filter Total Items: 62
Date published: February 22, 2021

Verified Irrigated Agricultural Lands for the United States, 2002-17

The spatial extents of verified irrigated lands were compiled from various federal and state sources across the nation and combined into a single Geographic Information System (GIS) geodatabase for the purpose of model training and validation.

Date published: November 4, 2020

Mineralogical analyses of drill core samples from the Canyon uranium-copper deposit, a solution-collapse breccia pipe, Grand Canyon area, Coconino County, Arizona, USA

This data release compiles the X-ray diffraction and electron microscopy analyses of drill core samples collected by the U.S. Geological Survey that were selected to typify the uranium-copper ore bodies of the Canyon deposit. The deposit is hosted by a solution-collapse breccia pipe, in which mineralization exists from about 650 to 2,100 ft (200 to 640 m) below the surface (Mathisen and

Date published: September 4, 2020

Data for Groundwater-Quality and Select Quality-Control Data for the Colorado Plateaus Principal Aquifer

Groundwater samples were collected from 60 public supply wells in the Colorado Plateaus principal aquifer. Water quality evaluations of groundwater for drinking water at public supply depths were made with the purpose of summarizing the current quality of source water (that is, untreated water) from public supply wells using two types of assessments; (1) status: an assessment that

Date published: September 3, 2020

Southwestern Willow Flycatcher Habitat Viewer

The Flycatcher Habitat Viewer was developed to meet the needs of organizations by providing maps of predicted flycatcher breeding habitat throughout its range. Maps are provided from 2013 to present and cover 57 satellite scenes. Maps identify predicted flycatcher habitat based upon the amount of green vegetation within a 120-m radius of each cell, and the size of floodplain within a 360-m...

Date published: August 14, 2020

Geochemical and mineralogical analyses of uranium ores from the Hack II and Pigeon deposits, solution-collapse breccia pipes, Grand Canyon region, Mohave and Coconino Counties, Arizona, USA

This data release compiles the whole-rock geochemistry, X-ray diffraction, and electron microscopy analyses of samples collected from the uranium ore bodies of two mined-out deposits in the Grand Canyon region of northwestern Arizona - the Hack II and Pigeon deposits. The samples are grab samples of ore collected underground at each mine by the U.S. Geological Survey (USGS) during the mid

Date published: July 13, 2020

Audiomagnetotelluric survey to characterize the Sunnyside porphyry copper system in the Patagonia Mountains, Arizona

This dataset includes audiomagnetotelluric (AMT) sounding data collected in 2008 in and near the Patagonia Mountains of southern Arizona. The U.S. Geological Survey (USGS) conducted a series of multidisciplinary studies as part of the Assessment Techniques for Concealed Mineral Resources project funded by the USGS Minerals Resources Program in cooperation with the U.S. Forest Service. The

Date published: June 23, 2020

Global Geochemical Database for Critical Minerals in Archived Mine Samples

The Critical Minerals in Archived Mine Samples Database (CMDB) contains chemistry and geologic information for historic ore and ore-related rock samples from mineral deposits in the United States. In addition, the database contains samples from archetypal deposits from 27 other countries in North America, South America, Asia, Africa and Europe. Samples were obtained from archived ore

Date published: June 3, 2020

One Meter Topobathymetric Digital Elevation Model for Lake Powell, Arizona-Utah, 1947-2018

The USGS Earth Resources Observation and Science (EROS) Center has created an integrated 1-meter topobathymetric digital elevation model (TBDEM) for Lake Powell, the second largest man-made reservoir in the United States.

Date published: April 23, 2020

Domestic Wells in the United States

Domestic wells provide drinking water supply for approximately 40 million people in the United States. Knowing the location of these wells, and the populations they serve, is important for identifying heavily used aquifers, locations susceptible to contamination, and populations potentially impacted by poor-quality groundwater. 

Date published: March 30, 2020

Airborne electromagnetic and magnetic survey, western Hualapai Indian Reservation near Grand Canyon West and Peach Springs, Arizona, 2018

Airborne electromagnetic (AEM) and magnetic survey data were collected during March 2018 along 1,637 line line-kilometers over the western Hualapai Indian Reservation and surrounding areas. The survey was conducted as part of a study of the groundwater resources of the Truxton basin and Hualapai Plateau. The survey was designed to improve the understanding of the geometry of the major hydr...

Date published: March 13, 2020

Data to accompany U.S. Geological Survey Scientific Investigations Report 2019-5077: Geochemical and mineralogical study of the Red Mountain porphyry copper-molybdenum deposit and vicinity, Santa Cruz County, Arizona

The dataset comprises analyses of core and surface samples collected in and around the Red Mountain porphyry Cu-Mo deposit, Santa Cruz County, Arizona. The dataset includes: analyses for 13 minerals in 245 core samples (Appendix 1); analyses for 44 elements in 818 core samples (Appendix 2); analyses for 54 elements in 122 rock samples (Appendix 3); analyses for 55 elements

Date published: February 25, 2020

The Annex of the Cartography and Imaging Sciences Node

The Annex of the PDS Cartography and Imaging Sciences Node (IMG) is a data repository designed to support the public delivery of NASA-funded geospatial data products derived from PDS image data.

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This is a map of the Southwest US with RestoreNet sites in six ecoregions.
May 14, 2020

RestoreNet is a networked ecological experiment on the cutting-edge of restoration science. The experiment sites span dryland ecoystems of the southwest U.S.

Black and grey map of the contiguous 48 states shaded by the number of people using domestic wells per square kilometer (2010)
April 23, 2020

Domestic wells provide drinking water supply for approximately 40 million people in the United States. Knowing the location of these wells, and the populations they serve, is important for identifying heavily used aquifers, locations susceptible to contamination, and populations potentially impacted by poor-quality groundwater. 

Figure 4 for Southwestern Willow Flycatcher Habitat Viewer webpage
March 12, 2020

Figure 4. Yearly Distribution (2007-2019) of Tamarisk Beetle (Diorhabda spp.). Annual tamarisk beetle distribution map. Provided by RiversEdge West. 2020. Used with permission from Ben Bloodgood, Program Coordinator.

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...

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...

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.

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. 

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...

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.

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Year Published: 2021

A systematic review of potential habitat suitability for the jaguar Panthera onca in central Arizona and New Mexico, USA

In April 2019, the U.S. Fish and Wildlife Service (USFWS) released its recovery plan for the jaguar Panthera onca after several decades of discussion, litigation and controversy about the status of the species in the USA. The USFWS estimated that potential habitat, south of the Interstate-10 highway in Arizona and New Mexico, had a...

Sanderson, Eric W; Fisher, Kim; Peters, Rob; Beckmann, Jon P.; Bird, Bryan; Bradley, Curtis; Bravo, Juan; Grigione, Melissa M.; Hatten, James; Gonzalez, Carlos; Menke, Kurt; Miller, Jennie; Miller, Philip; Mormorunni, Cristina; Robinson, Michael; Thomas, Robert E; Wilcox, Sharon

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Year Published: 2021

Improved Automated Identification and Mapping of Iron Sulfate Minerals, Other Mineral Groups, and Vegetation using Landsat 8 Operational Land Imager Data, San Juan Mountains, Colorado, and Four Corners Region

Multispectral remote sensing data acquired by the Landsat 8 Operational Land Imager (OLI) sensor were analyzed using a new, automated technique to generate a map of exposed mineral and vegetation groups in the western San Juan Mountains, Colo., and the Four Corners Region of the United States. Band ratio results were combined into displayed...

Rockwell, Barnaby W.; Gnesda, William R.; Hofstra, Albert H.
Rockwell, B.W., Gnesda, W.R., and Hofstra, A.H., 2021, Improved automated identification and mapping of iron sulfate minerals, other mineral groups, and vegetation using Landsat 8 Operational Land Imager data, San Juan Mountains, Colorado, and Four Corners Region: U.S. Geological Survey Scientific Investigations Map 3466, 1 sheet, scale 1:325,000, 37-p. pamphlet, https://doi.org/10.3133/sim3466.

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Year Published: 2019

Managing sand along the Colorado River to protect cultural sites downstream of Glen Canyon Dam

The construction of Glen Canyon Dam in northern Arizona has greatly reduced the supply of sand to the Colorado River corridor through Glen Canyon National Recreation Area and Grand Canyon National Park, hereafter referred to as Glen Canyon and Grand Canyon, respectively. This deficit has strongly affected the natural sediment cycle in this iconic...

Cook, Terri; East, Amy; Fairley, Helen; Sankey, Joel B.
Cook, T., East, A., Fairley, H., and Sankey, J.B., 2019, Managing sand along the Colorado River to protect cultural sites downstream of Glen Canyon Dam: U.S. Geological Survey Fact Sheet 2019–3054, 6 p., https://doi.org/10.3133/fs20193054.

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Year Published: 2019

Effects of water temperature, turbidity, and rainbow trout on humpback chub population dynamics

Humpback chub (Gila cypha Miller 1946), found only in the Colorado River Basin, was one of the first species to be given full protection under the Endangered Species Act of 1973. Habitat alterations, such as changes in flow and water temperature caused by dams, and the introduction of nonnative fish have contributed to population declines in...

Frederick, Phil; Yackulic, Charles; Hull, Julia B.
Yackulic, C.B., and Hull, J.B., 2019, Effects of water temperature, turbidity, and rainbow trout on humpback chub population dynamics: U.S. Geological Survey Fact Sheet 2019–3049, 4 p., https://doi.org/10.3133/fs20193049.

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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.

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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

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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; 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.

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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 J.; Walton-Day, Katherine; 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.

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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.

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Year Published: 2016

A satellite model of Southwestern Willow Flycatcher (Empidonax traillii extimus) breeding habitat and a simulation of potential effects of tamarisk leaf beetles (Diorhabda spp.), southwestern United States

Executive Summary The study described in this report represents the first time that a satellite model has been used to identify potential Southwestern Willow Flycatcher (Empidonax traillii extimus) (hereinafter referred to as “flycatcher”) breeding habitat rangewide for 2013–15. Fifty-seven Landsat scenes were required to map the...

Hatten, James R.
Hatten, J.R., 2016, A satellite model of Southwestern Willow Flycatcher (Empidonax traillii extimus) breeding habitat and a simulation of potential effects of tamarisk leaf beetles (Diorhabda spp.), Southwestern United States: U.S. Geological Survey Open-File Report 2016–1120, 88 p., http://dx.doi.org/10.3133/ofr20161120.

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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.

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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.

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ISIS_logo
September 10, 2018

ISIS is 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. https://isis.astrogeology.usgs.gov​.

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November 19, 2021

Image of the Week - Historic Lows at Lake Powell

Image of the Week: Historic Lows at Lake Powell

Lake Powell on the border of Utah and Arizona supplies water to millions across the southwestern United States.

Long-term dry conditions put the reservoir at a historic low in 2021. Landsat 8 imagery from 2017 shows the water's elevation at 3,628 feet. The reservoir on that day was at 60.3% of full capacity. 4

Map of uranium concentration in groundwater sites in the Grand Canyon region
November 15, 2021

Uranium concentration in groundwater sites in the Grand Canyon region

Map of maximum uranium concentration at 206 spring and well sites in the Grand Canyon region.

Outstanding in the Field - Episode 9 artwork. Scientist in the field studying biocrusts.
September 26, 2021

USGS Outstanding in the Field: Biocrusts (Ep. 9)

Welcome to another episode of Outstanding in the Field, the U.S. Geological Survey’s podcast series produced by the Ecosystems Mission Area. We highlight our fun and fascinating fieldwork studying ecosystems across the country. Today we’ll be discussing tiny communities that are found on the surface of the soil in the harsh environments of cold and hot deserts. These often

September 20, 2021

Lees Ferry - 100 Years of Streamflow Monitoring

On October 1, 2021, the U.S. Geological Survey Colorado River streamflow gaging site (USGS 09380000) at Lees Ferry will mark its 100-year anniversary of recording continuous streamflow data. As the gage of record for the apportionment of the Colorado River between the Upper and Lower Colorado River basins, the Lees Ferry site is arguably one of the most important

August 26, 2021

HLS: Magnum Fire, Arizona

 

Harmonized Landsat and Sentinel-2 (HLS) data are here!

The LP DAAC and the HLS Science Team are pleased to announce the release of Harmonized Landsat and Sentinel-2 (HLS) version 2.0 surface reflectance products. HLS data are composed of observations from Landsat 8 and Sentinel-2 and provide a set of seamless data products that can be utilized as if all

A table full of grasses in a greenhouse.
August 6, 2021

Greenhouse study comparing plant provenance for restoration

RestoreNet is partnering with the Gornish lab at the University of Arizona to better understand how a plant’s source location (provenance) influences its performance in a restoration setting. This greenhouse experiment will be conducted by PhD student, Sierra Lauman. Sierra will use locally collected and commercially purchased seeds of eight commonly used restoration

...
A woman monitors plants alongside a transect or measuring tape placed on the ground.
July 31, 2021

Pre-construction monitoring of vegetation for the Gemini Solar Array

The United States is developing renewable energy resources, especially solar, at a rapid rate. Although renewable energy development is widely perceived by the public as “green technology,” construction, operation, maintenance, and eventual decommissioning of facilities all have known and potential negative impacts to natural resources, including plant communities and

...
Bins of plants lines up outside a greenhouse
June 11, 2021

Greenhouse study comparing plant performance during drought.

Greenhouse study comparing plant performance during drought will help land managers choose plant species for restoring degraded lands. To find out more, follow the Restoration Assessment and Monitoring Program of the Southwest, housed at the Southwest Biolobigical Science Center. www.ugs.gov/sbsc/ramps

A woman stands in front of a table full of grasses in a greenhouse.
June 2, 2021

Drought experiments shed light on plant responses to climate change.

Greenhouse study comparing plant performance during drought will help land managers choose plant species for restoring degraded lands. To find out more, follow the Restoration Assessment and Monitoring Program of the Southwest, housed at the Southwest Biolobigical Science Center. www.ugs.gov/sbsc/ramps

A man captures insects using a net.
May 13, 2021

Powerlines & Pollinators

Connecting powerline rights-of-way vegetation management to improve pollinator habitat. A USGS RAMPS technician samples pollinating insects along the Salt River Project powerline that crosses through Apache-Sitgreaves and Tonto National Forests. This fall, baseline plots were established in areas that will be treated with mechanical and chemical vegetation management 

...
A man monitors plants alongside a transect or measuring tape placed on the ground.
April 21, 2021

Pre-construction monitoring of vegetation for the Gemini Solar Array

The United States is developing renewable energy resources, especially solar, at a rapid rate. Although renewable energy development is widely perceived by the public as “green technology,” construction, operation, maintenance, and eventual decommissioning of facilities all have known and potential negative impacts to natural resources, including plant communities and

...
Photo of Chinle Creek, USGS
March 31, 2021

Chinle Creek, USGS

Photo of Chinle Creek, USGS

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Photo of a water fall, Havasu Falls.
November 16, 2021

Nearly 95% of samples collected from 206 locations over 40 years show uranium concentrations less than the U.S. Environmental Protection Agency Maximum Contaminant Level for drinking water, according to a new U.S. Geological Survey report.

San Miguel River, Colorado, Fall 2020
October 28, 2021

A new study projects that a hot and dry future climate may lead to a 29% decline in Upper Colorado River Basin “baseflow” at the basin outlet by the 2050s, affecting both people and ecosystems.

White salts covers the surface of the San Rafael Swell, Utah. 
April 19, 2021

Salinity levels in the Upper Colorado River Basin, which covers portions of Wyoming, Colorado, Utah, Arizona and New Mexico, have steadily decreased since 1929, according to a new U.S. Geological Survey study analyzing decades of water-quality measurements.

2021 March Public Lecture Flyer
March 24, 2021

The U.S. Geological Survey public lecture series is back and virtual. News reporters are invited to attend to learn how USGS scientists are helping protect one of the only jaguars that lives in the U.S.

THUMBNAIL: Timelapse of FireStations in CA NV AZ
March 3, 2021

Summary statistics are now available for this challenge. Thanks again to everyone who contributed!

TNMCorps Mapping Challenge: FireStations in CA NV AZ FINISHED
February 18, 2021

This challenge is now complete! Thank you to everyone who contributed!

TNMCorps Mapping Challenge: FireStations in CA NV AZ
February 11, 2021

Volunteers continue to make progress on this challenge as more edits come in!

An infographic summarizing activities of the RAMPS program.
February 4, 2021

Restoration Assessment and Monitoring Program for the Southwest (RAMPS)

A Program of the Southwest Biological Science Center & Ecosystems Mission Area

To subscribe to our newsletter, please visit: https://listserv.usgs.gov/mailman/listinfo/ramps

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TNMCorps Mapping Challenge: FireStations in CA NV AZ
February 4, 2021

Volunteers have already contributed over 400 edits to this challenge since it was launched last week - IMPRESSIVE!

TNMCorps Mapping Challenge: FireStations in CA NV AZ NEW
January 28, 2021

TNMCorps Mapping Challenges continue along the Pacific Coast with a challenge for fire stations in California, Nevada, and Arizona!

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