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New Mexico

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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

Rio Grande at Alameda (Albuquerque, NM)
May 13, 2019

Groundwater levels in the Albuquerque area are on the rise according to newly published research from the U.S. Geological Survey.

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.

Photo of an active oil and gas pad on Bureau of Land Management lands near Canyonlands National Park, Utah.
February 12, 2019

Recovery of vegetation on plugged and abandoned oil and gas well sites on the Colorado Plateau is influenced by time, moisture, nonnative plants and the type of plant community that was originally in place before well sites were constructed, according to a recently published study by the U.S. Geological Survey.

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Photo of a met station at Valle de Oro National Wildlife Refuge, USGS
Date Published: May 16, 2019
Status: Active

Ecohydrologic and Water Quality Data Collection at Valle de Oro National Wildlife Refuge and the Albuquerque South Valley Community Commons

The United States Geological Survey (USGS) New Mexico Water Science Center (NM WSC), in cooperation with the U.S. Fish and Wildlife Service (USFWS), U.S. Environmental Protection Agency (USEPA), U.S. Army Corps of Engineers (USACE), U.S. Bureau of Reclamation (Reclamation), Albuquerque Metropolitan Arroyo Flood Control Authority (AMAFCA), and Bernalillo County (BERNCO), will measure and...

Contacts: Rebecca Travis
Sediment core collection, USGS, NMWSC
Date Published: May 16, 2019
Status: Active

Nitrate Contamination in the Albuquerque Basin

Globally, nitrate is the most ubiquitous groundwater contaminate including within the Albuquerque Basin in New Mexico. Ingesting high concentrations of nitrate (> 10 mg/L as N) in drinking water can lead to an increased risk of cancer and in infants, methemoglobinemia. Historical groundwater sampling in Albuquerque and Kirtland Air Force Base have found high (> 10 mg/L as N) and sometime...

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...

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
Barr Drain on Valle de Oro National Wildlife Refuge
Date Published: February 25, 2019
Status: Active

Urban Waters Federal Partnership—Middle Rio Grande (Albuquerque, N. Mex.)

The Valle de Oro National Wildlife Refuge, just 7 miles south of downtown Albuquerque on the Rio Grande, will reconnect people, especially young people, with nature in this highly populated area. The USGS is gathering data that will help gauge the success of habitat restoration efforts.

Contacts: Rebecca Travis
Province 5043 Palo Duro Basin National Oil and Gas Assessments
Date Published: December 6, 2018
Status: Active

Palo Duro Basin Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Palo Duro Basin Province 5043 in Texas, New Mexico, and Oklahoma:

 

Province 5042 Pedernal Uplift National Oil and Gas Assessments
Date Published: December 6, 2018
Status: Active

Pedernal Uplift Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Pedernal Uplift Province 5042:

 

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 5026 South Central New Mexico National Oil and Gas Assessments
Date Published: December 6, 2018
Status: Active

South-Central New Mexico Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the South-Central New Mexico Province 5026:

 

Province 5023 Albuquerque-Santa Fe Rift National Oil and Gas Assessments
Date Published: December 6, 2018
Status: Active

Albuquerque-Santa Fe Rift Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas resources of the Albuquerque-Santa Fe Rift 5023:

 

Province 5041 Raton Basin-Sierra Grand Uplift National Oil and Gas Assessments
Date Published: November 29, 2018
Status: Active

Raton Basin-Sierra Grande Uplift Oil and Gas Assessments

The U.S. Geological Survey completed the following assessments of undiscovered oil and gas potential of the Raton Basin–Sierra Grande Uplift Province 5041 of northeastern New Mexico and southeastern Colorado:

  • 2004 Conventional and Continuous Assessment (DDS 69-N and
  • ...
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USGS
June 21, 2019

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

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.

Image of data download web page
December 6, 2018

GIS Data for Palo Duro Basin Oil and Gas Assessments 

Image of data download web page
December 6, 2018

GIS Data for Pedernal Uplift 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 

Image of data download web page
December 6, 2018

GIS Data for South-Central New Mexico Oil and Gas Assessments

Image of data download web page
December 6, 2018

GIS Data for Albuquerque-Santa Fe Rift Oil and Gas Assessments 

Image of data download web page
November 29, 2018

Downloadable Data for Raton Basin-Sierra Grande Uplift Oil and Gas Assessments 

Image of data download web page
November 29, 2018

Downloadable Data for Paradox Basin Oil and Gas Assessments 

Image of data download web page
November 29, 2018

Downloadable Data for San Juan Basin Oil and Gas Assessments 

Screenshot of San Juan River Basin Sites
October 30, 2018

The USGS monitors current streamflow and water-quality conditions at various sites in the Animas and San Juan River Basins in Colorado, New Mexico, and Utah, including areas below the Gold King Mine release area. These streamgages provide continuous data on streamflow and select water-quality constituents including specific conductance, water temperature, pH, and turbidity.

NAWQA Chloride Map, Thumbnail, USGS
September 26, 2018

Link to USGS National Water-Quality Assessment (NAWQA) Project pages.

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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. 

Screenshot of San Juan River Basin Sites
March 4, 2019

The USGS monitors current streamflow and water-quality conditions at various sites in the Animas and San Juan River Basins in Colorado, New Mexico, and Utah, including areas below the Gold King Mine release area. These streamgages provide continuous data on streamflow and select water-quality constituents including specific conductance, water temperature, pH, and turbidity.

Aquifers: Map of the Principal Aquifers of the United States
March 13, 2018

The areal and vertical location of the major aquifers is fundamental to the determination of groundwater availability for the Nation. The map, which is derived from the Ground Water Atlas of the United States, indicates the areal extent of the uppermost principal aquifers on a national scale.

USGS StreamStats New Mexico
March 13, 2018

StreamStats version 4 is a Web application that provides access to an assortment of Geographic Information Systems (GIS) analytical tools that are useful for water-resources planning and management, and for engineering and design purposes. 

NMBGMR Interactive Map
March 12, 2018

These geospatial data are provided to the public to aid in the understanding of the geologic resources of New Mexico.

The National Map
March 12, 2018

The National Map is a collaborative effort among the USGS and other Federal, State, and local partners to improve and deliver topographic information for the Nation. It has many uses ranging from recreation to scientific analysis to emergency response. The National Map is easily accessible for display on the Web, as products and services, and as downloadable data.

Digital Elevation Model in the Atchafalaya Basin, LA
April 19, 2016

The 3DEP products and services available through The National Map consist of standard digital elevation models (DEMs) at various horizontal resolutions, elevation source and associated datasets, an elevation point query service and bulk point query service. All 3DEP products are available, free of charge and without use restrictions.

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Publication Thumbnail
Year Published: 2019

Calcrete uranium deposits in the Southern High Plains, USA

The Southern High Plains (SHP) is a new and emerging U.S. uranium province. Here, uranyl vanadates form deposits in Pliocene to Pleistocene sandstone, dolomite, and limestone. Fifteen calcrete uranium occurrences are identified; two of these, the Buzzard Draw and Sulfur Springs Draw deposits, have combined in-place resources estimated at about 4...

Hall, Susan; Van Gosen, Bradley S.; Paces, James B.; Zielinski, Robert A.

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Year Published: 2019

Identifying natural and anthropogenic variability of uranium at the well scale, Homestake Superfund site, near Milan, New Mexico, USA

The San Mateo Creek Basin in New Mexico, USA is located within the Grants Mineral Belt-an area with numerous uranium (U) ore deposits, mines, and milling operations. Six monitoring wells set in an alluvial aquifer near the Homestake Mining Co. Superfund site in the lower San Mateo Creek Basin were logged with a suite of borehole geophysical tools...

Harte, Philip T.; Blake, Johanna M.; Thomas, Jonathan V.; Becher, Kent D.

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Year Published: 2018

Determination of representative uranium and selenium concentrations from groundwater, 2016, Homestake Mining Company Superfund site, Milan, New Mexico

In 2016, the U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency, collected data on isotopes, age dating, and geochemistry including aqueous uranium concentrations of samples from 20 locations in the vicinity of the Homestake Mining Company Superfund site near Milan, New Mexico. The 20 sampled locations include 19...

Harte, Philip T.; Blake, Johanna M.; Becher, Kent D.
Harte, P.T., Blake, J.M., and Becher, K.D., 2018, Determination of representative uranium and selenium concentrations from groundwater, 2016, Homestake Mining Company Superfund site, Milan, New Mexico: U.S. Geological Survey Open-File Report 2018–1055, 40 p., appendixes, https://doi.org/10.3133/ofr20181055.

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Year Published: 2017

Assessment of undiscovered resources in calcrete uranium deposits, Southern High Plains region of Texas, New Mexico, and Oklahoma, 2017

The U.S. Geological Survey estimates a mean of 40 million pounds of in-place uranium oxide (U3O8) remaining as potential undiscovered resources in the Southern High Plains region of Texas, New Mexico, and Oklahoma. This estimate used a geology-based assessment method specific to calcrete uranium deposits.

Hall, Susan M.; Mihalasky, Mark J.; Van Gosen, Bradley S.
Hall, S.M., Mihalasky, M.J., and Van Gosen, B.S., 2017, Assessment of undiscovered resources in calcrete uranium deposits, Southern High Plains region of Texas, New Mexico, and Oklahoma, 2017: U.S. Geological Survey Fact Sheet 2017–3078, 2 p., https://doi.org/10.3133/fs20173078.

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Year Published: 2017

Capturing spatiotemporal variation in wildfires for improving postwildfire debris-flow hazard assessments: Chapter 20

Wildfires can increase the frequency and magnitude of catastrophic debris flows. Integrated, proactive natural hazard assessment would therefore characterize landscapes based on the potential for the occurrence and interactions of wildfires and postwildfire debris flows. This chapter presents a new modeling effort that can quantify the variability...

Haas, Jessica R.; Thompson, Matthew P.; Tillery, Anne C.; Scott, Joe H.

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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: 2015

In situ densimetric measurements as a surrogate for suspended-sediment concentrations in the Rio Puerco, New Mexico

Surrogate measurements of suspended-sediment concentration (SSC) are increasingly used to provide continuous, high-resolution, and demonstrably accurate data at a reasonable cost. Densimetric data, calculated from the difference between two in situ pressure measurements, exploit variations in real-time streamflow densities to infer SSCs. Unlike...

Brown, Jeb E.; Gray, John R.; Hornewer, Nancy J.

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Year Published: 2013

Simulations of groundwater flow, transport, and age in Albuquerque, New Mexico, for a study of transport of anthropogenic and natural contaminants (TANC) to public-supply wells

Vulnerability to contamination from manmade and natural sources can be characterized by the groundwater-age distribution measured in a supply well and the associated implications for the source depths of the withdrawn water. Coupled groundwater flow and transport models were developed to simulate the transport of the geochemical age-tracers carbon...

Heywood, Charles E.
Simulations of groundwater flow, transport, and age in Albuquerque, New Mexico, for a study of transport of anthropogenic and natural contaminants (TANC) to public-supply wells; 2013; SIR; 2012-5242; Heywood, Charles E.

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Year Published: 2010

Digital map of aquifer boundary for the High Plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming

This digital data set represents the extent of the High Plains aquifer in the central United States. The extent of the High Plains aquifer covers 174,000 square miles in eight states: Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. This data set represents a compilation of information from digital and paper...

Qi, Sharon
Digital map of aquifer boundary for the High Plains aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming; 2010; DS; 543; Qi, Sharon

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Year Published: 2008

Questa Baseline and Pre-Mining Ground-Water-Quality Investigation 22 - Ground-Water Budget for the Straight Creek Drainage Basin, Red River Valley, New Mexico

In April 2001, the U.S. Geological Survey (USGS) and the New Mexico Environment Department (NMED) began a cooperative study to infer the pre-mining ground-water chemistry at the Molycorp molybdenum mine site in the Red River Valley. The Molycorp mine has been in operation since the 1920s. Because ground-water conditions prior to mining are not...

McAda, Douglas P.; Naus, Cheryl A.
Questa Baseline and Pre-Mining Ground-Water-Quality Investigation 22 - Ground-Water Budget for the Straight Creek Drainage Basin, Red River Valley, New Mexico; 2008; SIR; 2007-5149; McAda, Douglas P.; Naus, Cheryl A.

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Year Published: 2007

Rocky Mountain Snowpack Chemistry at Selected Sites, 2004

During spring 2004, the U.S. Geological Survey in cooperation with the National Park Service and the U.S. Department of Agriculture, Forest Service collected and analyzed snowpack samples for 65 sites in the Rocky Mountain region from New Mexico to Montana. Snowpacks were sampled from late February through early April and generally had well-below-...

Ingersoll, George P.; Mast, M. Alisa; Nanus, Leora; Handran, Heather H.; Manthorne, David J.; Hultstrand, Douglas M.
Rocky Mountain Snowpack Chemistry at Selected Sites, 2004; 2007; OFR; 2007-1045; Ingersoll, George P.; Mast, M. Alisa; Nanus, Leora; Handran, Heather H.; Manthorne, David J.; Hultstrand, Douglas M.

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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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USGS
March 9, 2018

Various projects on the USGS's public GitHub.

View of three USGS Visual Identity items
March 9, 2018

The software and related documentation on these Web pages were developed by the U.S. Geological Survey (USGS) for use by the USGS in fulfilling its mission. The software can be used, copied, modified, and distributed without any fee or cost.

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Stormwater runoff in the Albuquerque urban area, NMWSC
December 31, 2018

Stormwater runoff in the Albuquerque urban area, NMWSC

Stormwater runoff in the Albuquerque urban area, NMWSC

USGS, NM Water Science Center, Gallinas Creek discharge measurement
December 31, 2018

Gallinas Creek discharge measurement, USGS

Hydrologic Technician Chris Peskuski making a discharge measurement above Gallinas Creek near Montezuma, NM (site data available at: https://waterdata.usgs.gov/nm/nwis/uv?site_no=08380500)

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.

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.

USGS - Roswell Field Office, USGS/BLM
June 27, 2018

USGS - Roswell Field Office, USGS/BLM

USGS - Roswell Field Office, USGS/BLM

Photo of a met station at Valle de Oro National Wildlife Refuge, USGS
May 16, 2018

Met Station at Valle de Oro National Wildlife Refuge

Image of a Met Station at Valle de Oro National Wildlife Refuge, New Mexico, USGS - New Mexico Water Science Center (NMWSC)

Discussion on Complexities of the Rio Grande Watershed
April 30, 2018

Discussion on Complexities of the Rio Grande Watershed

Streamside talk about a water managers perspectives on the complexities of the Rio Grande Watershed and the history / need for runoff forecasts for downstream water users. The talk led by Dagmar Llewelly (BOR), Carolyn Donnelly (BOR), Andy Wood (UCAR), and Flaivo Lehner (UCAR) focused on how stream forecasts are developed from snow information and how the forecasts are

...
Rio Grande Gaging Station Sign
April 30, 2018

Rio Grande Gaging Station Sign

Attendees of the 86th Annual Western Snow Conference held in Albuquerque, New Mexico gather at the first streamgaging station established by the United States Geological Survey in 1889 to learn about USGS streamgaging techniques. 

Jeb Brown discusses sediment sampling techniques
April 30, 2018

Jeb Brown Discusses Sediment Sampling Techniques

Attendees of the 86th Annual Western Snow Conference listen as Jeb Brown of the New Mexico Water Science Center discusses current and past sediment gaging techniques. 

Hydro tech teaches sediment sampling techniques
April 30, 2018

Sediment Sampling Techniques

Attendees of the 86th Annual Western Snow Conference listen as Tyson Hatch of the New Mexico Water Science Center discusses current and past sediment gaging techniques. 

USGS Staff pose next to "First Gaging Station" sign
April 30, 2018

Rio Grande at Embudo, NM - First Gaging Station

Staff from the New Mexico Water Science Center pose next to the "First Gaging Station" sign after hosting a technical tour of the site as part of the 86th annual Western Snow Conference.

Close-up of dried, cracked soil with small plants trying to survive in this soil.
December 31, 2017

Dry, cracked soil (RAMPS)

Rangelands of the desert Southwest can be in a degraded condition and lacking perennial vegetation, which can lead to exposed soil and erosion. RAMPS is working to mitigate degradation by increasing 

...
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Rio Grande at Alameda (Albuquerque, NM)
May 13, 2019

Groundwater levels in the Albuquerque area are on the rise according to newly published research from the U.S. Geological Survey.

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.

Photo of an active oil and gas pad on Bureau of Land Management lands near Canyonlands National Park, Utah.
February 12, 2019

Recovery of vegetation on plugged and abandoned oil and gas well sites on the Colorado Plateau is influenced by time, moisture, nonnative plants and the type of plant community that was originally in place before well sites were constructed, according to a recently published study by the U.S. Geological Survey.

Image shows a map of the assessment units of the 2018 Delaware Basin oil and gas assessment
November 28, 2018

Estimates Include 46.3 Billion Barrels of Oil, 281 Trillion Cubic feet of Natural Gas, and 20 Billion Barrels of Natural Gas Liquids in Texas and New Mexico’s Wolfcamp Shale and Bone Spring Formation.

Bandelier Postwildfire, New Mexico Water Science Center
August 6, 2018

The U.S. Geological Survey is celebrating the achievements of Dr. Craig D. Allen, who was recently named an Ecological Society of America (ESA) fellow for making exceptional contributions to a broad array of ecology. Dr. Allen, a research ecologist with the USGS Fort Collins Science Center, joins 27 other newly-initiated ESA fellows from academia, public and private sectors. Fellows are elected for life.

USGS Rain Gages Near Ute Park Burn Area, NMWSC
June 15, 2018

The New Mexico Water Science center has proactively installed three rain gages at two existing streamgages and one reservoir gage within and surrounding the Ute Park Fire burn area. The data will provide local, state, and federal entities as well as area residents with near real time information of precipitation in the area. 

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.

Photo of a young girl drinking water, which likely originated from groundwater sources. 
December 7, 2017

A regional assessment of untreated groundwater in the Rio Grande aquifer system, which includes parts of Colorado, New Mexico and Texas, is now available from the U.S. Geological Survey.

Image: Rio Grande and Cliffs in Boquillas Canyon, Big Bend National Park
September 14, 2017

A new U.S. Geological Survey report describes the below ground geology of the Rio Grande transboundary region of New Mexico and Texas, United States, and northern Chihuahua, Mexico.

A wildfire in a forest
September 7, 2017

A growing number of wildfire-burned areas throughout the western United States are expected to increase soil erosion rates within watersheds, causing more sediment to be present in downstream rivers and reservoirs, according to a new study by the U.S. Geological Survey.

Image: Burning Sagebrush
September 6, 2017

An examination of long-term data for lands managed by the Bureau of Land Management finds that land treatments in the southwestern United States are increasingly large, expensive and related to fire and invasive species control.

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