Regions

Colorado

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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

Airborne electromagnetic system similar to that which will be used for the Silverton, Colorado survey.
March 25, 2019

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.

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.

Colorado River, Kawuneeche Valley, Grand County, Colorado
October 23, 2018

The University of Colorado Boulder has been selected as the new host for the North Central CASC.

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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
June 2011 Mississippi River flood
Date Published: February 25, 2019
Status: Completed

Summer 2011 Missouri River Basin flood

Learn more about USGS flood activities related to the 2011 Missouri River Basin Flood resulting from higher-than-average snowmelt runoff combined with heavy spring rains.

Fast moving stream with rapids in upper, more mountainous part of Boulder Creek Watershed, Colorado
Date Published: December 13, 2018
Status: Active

Connections between Forested and Urban Landscapes and Implications for Water Supply

Interactions between forested and urban landscapes can lead to reciprocal effects that have substantial impacts on water supply and ecology. Air pollution from urban and forested landscapes can be deposited on adjacent forests, while forest disturbance, such as wildfires and floods, can remobilize those contaminants. Additionally, pollutants from legacy land use (e.g., mining) can also be...

Greater Yellowstone Area ice patches, northwestern Wyoming
Date Published: November 29, 2018
Status: Active

Hydrothermal alteration at Yellowstone - linking geophysical models to alteration mineralogy- Paul Bedrosian

This opportunity focuses on integration of geophysical modeling with constraints on alteration mineralogy from spectral measurements on drill core and hyperspectral remote sensing data.

3D Image of Electrical Resistivity from Airborne Electromagnetic Geophysics
Date Published: November 27, 2018
Status: Active

Regional-to-national scale electrical resistivity model development- Paul A Bedrosian

The advent of national geophysical initiatives (e.g. EarthScope, AusLamp, SinoProbe) has started the race to develop regional- and national-scale geophysical models. In parallel, the need for such models is on the rise within the natural-hazard and resource sectors. This internship focuses on development of three-dimensional electrical resistivity models derived from magnetotelluric (MT) data...

Sky Pond in Rocky Mountain National Park, CO.
Date Published: October 25, 2018
Status: Active

Quantifying the Terrestrial Flux of Phosphorus to Aquatic Systems in Rocky Mountain Ecosystems- Corey Lawrence

The overarching goal of this project is to characterize and quantify the terrestrial controls on stream water phosphorus (P) content and cycling in the East River Valley near Gothic, CO. The intern will join a multi-disciplinary team of scientists who are developing processed based understanding of biogeochemical cycling in Rocky Mountains ecosystems.

Improving ground motion characterization in USGS near-real-time products
Date Published: October 23, 2018
Status: Active

Improving ground motion characterization in USGS near-real-time products- Eric Thompson

After an earthquake, have you ever wanted to know more about its effects and impact? Have you wondered if the damage and loss estimates are accurate? This internship is your opportunity to wonder no more! You will learn how to create models of earthquake effects, and how to make them more accurate.

Holocene Seasonal Climatology in South-Central Alaska
Date Published: October 23, 2018
Status: Active

Holocene seasonal climatology in south-central Alaska from intra-annual oxygen and carbon isotopes of fossil wood- Lesleigh Anderson

This project will utilize isotopic analyses of a unique archive of fossil wood spanning ~10,000 years in the Wrangell-St. Elias region of south central Alaska to document variations in Holocene seasonality of temperature and precipitation.

Hazard and losses from earthquake-triggered landslides and liquefaction
Date Published: October 23, 2018
Status: Active

Hazard and losses from earthquake-triggered landslides and liquefaction- Kate Allstadt

Augment existing near real-time earthquake-triggered landslide and liquefaction hazard models with products such as landslide dam likelihood, road network disturbances, and disruption to ports. Investigate methods for improving and/or rapidly updating models such as remote sensing data, historical fill maps, and social media and news reports.

Blacks Fork above Smiths Fork Streamgage
Date Published: October 23, 2018
Status: Active

Evaluation of the National Streamgage Network to Support Surface Water Characterization- William Farmer

How can our national streamgage network evolve to meet changing demands in the coming fifty years?  This is an opportunity to explore the varied uses of the U.S. Geological Survey’s National Streamgage Network and understand how it can be used to support water management across the country and how it can be more effectively designed.

Yellowstone National Park Integrated Studies
Date Published: October 18, 2018
Status: Active

Yellowstone National Park Integrated Studies- JoAnn Holloway

The goal of the project supported by the internship is to evaluate mineral assemblages in drill hole core collected from Yellowstone National Park using spectral methods, determine subsurface structures using electromagnetic methods, and to evaluate the distribution of rare earth elements and other trace metals associated with minerals using scanning electron microscopy and electron microprobe...

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Web Application
/data-tools/national-water-information-system-nwis-mapper

National Water Information System (NWIS) Mapper

NWIS Mapper screenshot
March 5, 2019

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

Science Datasets
/data-tools/argon-geochronology-data-la-garita-caldera

Argon geochronology data for La Garita caldera

USGS
January 1, 2019

This dataset accompanies publication 'A supervolcano and its sidekicks: A 100 ka eruptive chronology of the Fish Canyon Tuff and associated units of the La Garita magmatic system', in review in Geology, which analyzed eruptive products from the La Garita caldera.

Water
/data-tools/current-streamflow-and-water-quality-monitoring-select-sites-animas-and-san-juan-river

Current Streamflow and Water-Quality Monitoring at Select Sites in the Animas and San Juan River Basins, Colorado, New Mexico, and Utah

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.

Web Application
/data-tools/land-treatment-exploration-tool

Land Treatment Exploration Tool

Screenshot of the Land Treatment Exploration Tool with proposed treatment drawn on screen.
May 3, 2018

The Land Treatment Exploration Tool is designed for resource managers to use when planning land treatments. The tool provides useful summaries of environmental characteristics of planned treatment areas and facilitates adaptive management practices by comparing those characteristics to other similar treatments within a specified distance or area of interest.  Provisional Software.

Science Datasets
/data-tools/minnesota-mine-shaft-tracer-data-lion-creek-watershed-near-empire-colorado-july-0

Minnesota Mine Shaft Tracer Data, Lion Creek Watershed near Empire, Colorado, July-November, 2017

Sampling Minnesota Mine Shaft, Lion Creek Watershed near Empire, CO
April 3, 2018

On July 26, 2017, a solution containing approximately 200 kilograms of dissolved sodium bromide was added to the the flooded underground shaft of the Minnesota Mine, near Empire, Colorado. This addition was conducted as part of an effort to determine the degree to which the mine shaft is hydrologically connected to a series of downgradient seeps and springs.

Science Datasets
/data-tools/snowmodel-simulations-and-supporting-observations-north-central-colorado-rocky-0

SnowModel simulations and supporting observations for the north-central Colorado Rocky Mountains during water years 2011 through 2015

Screenshot plots of 5-year mean SnowModel simulation output
February 6, 2018

This data release includes simulation output from SnowModel, a well-validated process-based snow modeling system, and supporting snow, meteorological, and streamflow observations from the water years 2011 through 2015 (October 1, 2010, through September 30, 2015) across a 3,600 square kilometer model domain in the north-central Colorado Rocky Mountains.

Science Datasets
/data-tools/datasets-ecological-communities-invertebrates-and-fish-streamflow-habitat-and-water-2

Datasets of ecological communities (invertebrates and fish), streamflow, habitat, and water quality to examine the presence of trends in ecological communities from the Fountain Creek Basin, Colorado, USA, 2003-2016

Cover image SIR 2017-5162
January 3, 2018

These data were used for an analysis as part of a long-term project monitoring the biological communities, habitat, and water quality of the Fountain Creek Basin. Biology, habitat, and water quality data have been collected at 10 sites starting in 2003. These data include annual samples of aquatic invertebrate communities, fish communities, water quality, and quantitative riverine habitat collected from 2003-2016. These data will provide insight into trends in biological communities from 2003-2016 and relationships between biological communities and abiotic variables (antecedent streamflow, physical habitat, and water quality).

Science Datasets
/data-tools/calibration-datasets-and-model-archive-summaries-regression-models-developed-estimate

Calibration datasets and model archive summaries for regression models developed to estimate metal concentrations at nine sites on the Animas and San Juan Rivers, Colorado, New Mexico, and Utah: U.S. Geological Survey data release, https://doi.org/10.5066

USGS
January 1, 2018

This data release supports the following publication: Mast, M. A., 2018, Estimating metal concentrations with regression analysis and water-quality surrogates at nine sites on the Animas and San Juan Rivers, Colorado, New Mexico, and Utah: U.S. Geological Survey Scientific Investigations Report 2018-5116. The U.S. Geological Survey (USGS), in cooperation with the U. S. Environmental Protection Ag

Science Datasets
/data-tools/high-resolution-helicopter-borne-magnetic-and-electromagnetic-survey-eureka-graben-area

High resolution helicopter-borne magnetic and electromagnetic survey Eureka Graben area, Colorado September 1999

USGS
January 1, 2018

On September 25, 1998, SIAL Geosciences Inc. (SIAL) was awarded Department of Interior, contract 98CRCN1018, by the U.S. Geological Survey. This contract required SIAL to carry out a high-sensitivity magnetic and electromagnetic helicopter survey over one block located in the Eureka Graben Area. The primary goal of this project was to provide digitally recorded and processed magnetic and electr

Science Datasets
/data-tools/regional-scale-magnetotelluric-data-rio-grande-rift-and-southern-rocky-mountains

Regional scale magnetotelluric data from the Rio Grande Rift and southern Rocky Mountains

USGS
January 1, 2018

This dataset consists of 102 magnetotelluric (MT) stations collected in 2012-2014 in the Rio Grande Rift and southern Rocky Mountains. The U.S. Geological Survey acquired these data to improve regional conductivity models of the western United States. This work is in support of studies of the effect of lithospheric modification on electrical resistivity structure and tectonic evolution of the wes

Science Datasets
/data-tools/argon-and-geochemical-data-40ar39ar-geochronology-and-petrogenesis-table-mountain

Argon and geochemical data for: 40Ar/39Ar geochronology and petrogenesis of the Table Mountain Shoshonites, Golden, CO

USGS
January 1, 2018

This dataset accompanies publication '40Ar/39Ar geochronology and petrogenesis of the Table Mountain Shoshonites, Golden, CO', to be published in Rocky Mountain Geology, which analyzed lava flows on North and South Table Mountain in Golden, CO, for argon geochronology and geochemistry.

Water
/data-tools/national-water-information-system-web-interface-nwisweb-0

National Water Information System web interface (NWISweb)

Application screenshot thumbnail
September 1, 2017

The National Water Information System (NWIS) web application provides access to real-time and historical surface-water, groundwater, water-quality, and water-use data collected at approximately 1.5 million sites across all 50 states.

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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.

Colorado StreamStats Screen Capture
May 17, 2017

The map-based user interface can be used to delineate drainage areas, get basin characteristics and estimates of flow statistics, and more. 

Funding partners: Colorado Department of Transportation and Colorado Water Conservation Board

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.

Boston.jpg
April 6, 2016

USGS topographic maps originally published on paper in the period 1884-2006 have been scanned and published as PDF documents. This collection is of topographic quadrangle maps with scales between 1:10,000 and 1:250,000. These historic documents are downloadable free of charge through several interfaces.

Colorado. The location of the 188 streamgages used to develop the peak-streamflow equations
September 15, 2015

The location of the 188 streamgages used to develop the peak-streamflow equations, of which 44 streamgages have paleoflood or non-exceedance bound data.

Colorado Flood Database
October 24, 2010

An easy-to-use, Web-based geodatabase of historical flood and paleoflood information which includes links to sources of flood data.  The interface makes this collection of information useful to water-resource managers to better understand the historic events for improved flood-frequency estimates of the largest floods in Colorado.

Nodes and Subreaches Along Monument and Fountain Creeks and Location of Streamflow Stations Used in Transit-Loss Accounting Prog
September 6, 2007

Nodes and Subreaches Along Monument and Fountain Creeks and Location of Streamflow-Gaging Stations, Wastewater-Treatment Facilities, and Diversions Used in New Transit-Loss Accounting Program

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Year Published: 2018

Pharmaceuticals, hormones, pesticides, and other bioactive contaminants in water, sediment, and tissue from Rocky Mountain National Park, 2012–2013

Pharmaceuticals, hormones, pesticides, and other bioactive contaminants (BCs) are commonly detected in surface water and bed sediment in urban and suburban areas, but these contaminants are understudied in remote locations. In Rocky Mountain National Park (RMNP), Colorado, USA, BCs may threaten the reproductive success and survival of native...

Battaglin, William A.; Bradley, Paul M.; Iwanowicz, Luke R.; Journey, Celeste A.; Walsh, Heather L.; Blazer, Vicki S.
Battaglin, W.A., Bradley, P.M., Iwanowicz, L., Journey, C.A., Walsh, H.L., and Blazer, V.S., 2018, Pharmaceuticals, hormones, pesticides, and other bioactive contaminants in water, sediment, and tissue from Rocky Mountain National Park, 2012–2013, Science of The Total Environment, v. 643, p. 651-673. https://doi.org/10.1016/j.scitotenv.2018.06.150.

Year Published: 2018

Cinnamon gulch revisited: Another look at separating natural and mining-impacted contributions to instream metal load

Baseline, premining data for streams draining abandoned mine lands is virtually non existent, and indirect methods for estimating premining conditions are needed to establish realistic, cost effective cleanup goals. One such indirect method is the proximal analog approach, in which premining conditions are estimated using data from nearby...

Runkel, Robert L.; Verplanck, Philip; Kimball, Briant; Walton-Day, Katie
Runkel, R.L., Verplanck, P.L., Kimball, B.A., Walton-Day, K., 2018, Cinnamon Gulch revisited: Another look at separating natural and mining-impacted contributions to instream metal load, Applied Geochemistry, v. 95, 206-217. https://doi.org/10.1016/j.apgeochem.2018.04.010

Year Published: 2018

Comparability among four invertebrate sampling methods and two multimetric indexes, Fountain Creek Basin, Colorado, 2010–2012

The U.S. Geological Survey (USGS), in cooperation with Colorado Springs City Engineering and Colorado Springs Utilities, analyzed previously collected invertebrate data to determine the comparability among four sampling methods and two versions (2010 and 2017) of the Colorado Benthic Macroinvertebrate Multimetric Index (MMI). For this study,...

Bruce, James F.; Roberts, James J.; Zuellig, Robert E.
Bruce, J.F., Roberts, J.J., and Zuellig, R.E., 2018, Comparability among four invertebrate sampling methods and two multimetric indexes, Fountain Creek Basin, Colorado, 2010–2012: U.S. Geological Survey Scientific Investigations Report 2018–5061, 11 p., https://doi.org/10.3133/sir20185061.

Year Published: 2018

Assessment of dissolved-selenium concentrations and loads in the lower Gunnison River Basin, Colorado, as part of the Selenium Management Program, from 2011 to 2016

The Gunnison Basin Selenium Management Program implemented a water-quality monitoring network in 2011 in the lower Gunnison River Basin in Colorado. Selenium is a trace element that bioaccumulates in aquatic food chains and can cause reproductive failure, deformities, and other harmful effects. This report presents the percentile values of...

Henneberg, Mark F.
Henneberg, M.F., 2018, Assessment of dissolved-selenium concentrations and loads in the lower Gunnison River Basin, Colorado, as part of the Selenium Management Program, from 2011 to 2016: U.S. Geological Survey Scientific Investigations Report 2018–5001, 23 p., https://doi.org/10.3133/ofr20185001.

Year Published: 2018

Methane in groundwater from a leaking gas well, Piceance Basin, Colorado, USA

Site-specific and regional analysis of time-series hydrologic and geochemical data collected from 15 monitoring wells in the Piceance Basin indicated that a leaking gas well contaminated shallow groundwater with thermogenic methane. The gas well was drilled in 1956 and plugged and abandoned in 1990. Chemical and isotopic data showed the...

McMahon, Peter B.; Thomas, Judith C.; Crawford, John T.; Dornblaser, Mark M.; Hunt, Andrew G.
McMahon, P.B., Thomas, J.C., Crawford, J.T., Dornblaser, M.M, Hunt, A.G., 2018. Methane in groundwater from a leaking gas well, Piceance Basin, Colorado, USA. Sci. Total Environ. 634, 791-801.

Year Published: 2018

Changes in biological communities of the Fountain Creek Basin, Colorado, 2003–2016, in relation to antecedent streamflow, water quality, and habitat

The analysis described in this report is part of a longterm project monitoring the biological communities, habitat, and water quality of the Fountain Creek Basin. Biology, habitat, and water-quality data have been collected at 10 sites since 2003. These data include annual samples of aquatic invertebrate communities, fish communities, water...

Roberts, James J.; Bruce, James F.; Zuellig, Robert E.
Roberts, J.J., Bruce, J.F., and Zuellig, R.E., 2018, Changes in biological communities of the Fountain Creek Basin, Colorado, 2003–2016, in relation to antecedent streamflow, water quality, and habitat: U.S. Geological Survey Scientific Investigations Report 2017–5162, 20 p., https://doi.org/10.3133/sir20175162.

Year Published: 2017

Hydrogeologic characteristics and geospatial analysis of water-table changes in the alluvium of the lower Arkansas River Valley, southeastern Colorado, 2002, 2008, and 2015

The U.S. Geological Survey in cooperation with the Lower Arkansas Valley Water Conservancy District measures groundwater levels periodically in about 100 wells completed in the alluvial material of the Arkansas River Valley in Pueblo, Crowley, Otero, Bent, and Prowers Counties in southeastern Colorado, of which 95 are used for the analysis in this...

Holmberg, Michael J.
Holmberg, M.J., 2017, Hydrogeologic characteristics and geospatial analysis of water-table changes in the alluvium of the lower Arkansas River Valley, southeastern Colorado, 2002, 2008, and 2015: U.S. Geological Survey Scientific Investigations Map 3378, pamphlet 9 p., 3 sheets, scale 1:130,000 and 1:575, 000, https://doi.org/10.3133/sim3378.

Year Published: 2017

Geoelectric monitoring at the Boulder magnetic observatory

Despite its importance to a range of applied and fundamental studies, and obvious parallels to a robust network of magnetic-field observatories, long-term geoelectric field monitoring is rarely performed. The installation of a new geoelectric monitoring system at the Boulder magnetic observatory of the US Geological Survey is summarized. Data from...

Blum, Cletus; White, Tim; Sauter, Edward A.; Stewart, Duff; Bedrosian, Paul A.; Love, Jeffrey J.
Blum, C. C., White, T. C., Sauter, E. A., Stewart, D. C., Bedrosian, P. A., and Love, J. J.: Geoelectric monitoring at the Boulder magnetic observatory, Geosci. Instrum. Method. Data Syst. Discuss., https://doi.org/10.5194/gi-2017-27, in production, 2017.

Year Published: 2017

Characterization of water quality and suspended sediment during cold-season flows, warm-season flows, and stormflows in the Fountain and Monument Creek watersheds, Colorado, 2007–2015

From 2007 through 2015, the U.S. Geological Survey, in cooperation with Colorado Springs City Engineering, conducted a study in the Fountain and Monument Creek watersheds, Colorado, to characterize surface-water quality and suspended-sediment conditions for three different streamflow regimes with an emphasis on characterizing water quality during...

Miller, Lisa D.; Stogner, Sr., Robert W.
Miller, L.D., and Stogner, R.W., Sr., 2017, Characterization of water quality and suspended sediment during cold-season flows, warm-season flows, and stormflows in the Fountain and Monument Creek Watersheds, Colorado, 2007–2015: U.S. Geological Survey Scientific Investigations Report 2017–5084, 47 p., https://doi.org/10.3133/sir20175084.

Year Published: 2017

Precipitation, streamflow, suspended-sediment, and water-quality data for the U.S. Army Garrison Fort Carson and Piñon Canyon Maneuver Site, Colorado, 1966–2015

The U.S. Army Garrison Fort Carson (AGFC) and the Piñon Canyon Maneuver Site (PCMS) are facilities operated by the U.S. Department of the Army in southern Colorado. The U.S. Geological Survey, in cooperation with the U.S. Department of the Army, established a hydrologic and water-quality data-collection network at the AGFC in June 1978 and at the...

Arnold, L.R.
Arnold, L.R., 2017, Precipitation, streamflow, suspended-sediment, and water-quality data for the U.S. Army Garrison Fort Carson and Piñon Canyon Maneuver Site, Colorado, 1966–2015: U.S. Geological Survey Open-File Report 2017–1072, 130 p., https://doi.org/10.3133/ofr20171072.

Year Published: 2017

Estimation of salt loads for the Dolores River in the Paradox Valley, Colorado, 1980–2015

Regression models that relate total dissolved solids (TDS) concentrations to specific conductance were used to estimate salt loads for two sites on the Dolores River in the Paradox Valley in western Colorado. The salt-load estimates will be used by the Bureau of Reclamation to evaluate salt loading to the river coming from the Paradox Valley and...

Mast, M. Alisa
Mast, M.A., 2017, Estimation of salt loads for the Dolores River in the Paradox Valley, Colorado, 1980–2015: U.S. Geological Survey Scientific Investigations Report 2017–5059, 20 p., https://doi.org/10.3133/sir20175059.

Year Published: 2017

The Niobrara Formation as a challenge to water quality in the Arkansas River, Colorado, USA

Study regionArkansas River, east of the Rocky Mountains.Study focusCretaceous sedimentary rocks in the western United States generally pose challenges to water quality, often through mobilization of salts and trace metals by irrigation. However, in the Arkansas River Basin of Colorado, patchy exposure of multiple Cretaceous formations has made it...

Bern, Carleton R.; Stogner, Sr., Robert W.
Bern, C.R. and Stogner, R.W., Sr., 2017, The Niobrara Formation as a challenge to water quality in the Arkansas River, Colorado, USA: Journal of Hydrology: Regional Studies, Elsevier, v. 12, p. 181-195.

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USGS science for a changing world
November 20, 2017

The is a useful tool designed to facilitate FGDC metadata creation for spatial and non-spatial data sets. It is a cross-platform desktop application built using an open-source Python architecture.

USGS science for a changing world
March 23, 2012

Smart River GIS allows simultaneous views of river hydraulics, species-specific habitat, and fish population simulations, for a better understanding of complex ecological interactions. We used existing data sets from the South Platte River in Colorado to develop a multi-layered geographic information system (GIS) that resource managers can use to improve their understanding of river ecosystems.

USGS science for a changing world
January 1, 1999

CloseTest is a Windows program for testing capture-recapture data

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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 USGS scientist prepares a sample to test the effect of antibiotics on denitrifying bacteria within a glove box
September 24, 2018

A USGS scientist prepares a sample to test the effect of antibiotics

A USGS scientist prepares a sample to test the effect of antibiotics on denitrifying bacteria within a glove box. A glove box allows scientists to work with samples in an anaerobic (no oxygen) atmosphere, the conditions under which denitrification occurs.

Fathead minnows (Pimephales promelas) swimming in an experimental aquarium
April 3, 2018

Fathead minnows swimming in an experimental aquarium

Fathead minnows (Pimephales promelas) swimming in an expermental aquaium. The aquarium is part of an experiment to assess endocrine disruption in fish.

Bioactive Chemicals Research Laboratory -- Boulder, Colorado
April 3, 2018

Bioactive Chemicals Research Laboratory -- Boulder, Colorado

Bioactive Chemicals Research Laboratory -- Boulder, Colorado. Fathead minnows (Pimephales promelas) swimming in an expermental aquaium

Measuring streamflow through augered holes, North Platte nr Northgate
January 17, 2018

Measuring streamflow through augered holes, North Platte nr Northgate

Measuring streamflow through augered holes, North Platte nr Northgate

Aquariums where male fathead minnows were exposed to the effluent from a wastewater treatment plant
December 31, 2017

Aquariums where male fathead minnows were exposed to sewage effluent

Aquariums where male fathead minnows were exposed to the effluent from a wastewater treatment plant

Fathead minnows (Pimephales promelas) swimming in an experimental aquarium
December 31, 2017

Fathead minnows swimming in an experimental aquarium

Bioactive Chemicals Research Laboratory — Boulder, Colorado. Fathead minnows (Pimephales promelas) swimming in an experimental aquarium. The aquarium is part of an experiment to assess endocrine disruption in fish.

Scientist operates small drone over river valley with mountains in the background.
August 16, 2017

USGS uses drone with thermal infrared camera to study water resources

USGS Hydrologist Eric White flies a small unoccupied aircraft system – sUAS or "drone" – equipped with a thermal infrared camera during a groundwater/surface-water exchange study along the East River in Gunnison National Forest near Gothic, Colorado, in August 2017. The study was part of a multi-year project by the USGS Water Resources Mission Area Hydrogeophysics Branch

...
Attribution: Water Resources
July 14, 2017

Debris flow monitoring at Chalk Cliffs, CO (2017)

The USGS and its cooperators have installed debris-flow monitoring equipment in the largest drainage basin at Chalk Cliffs, CO. Data collection at this site supports research on the hydrologic factors that control debris-flow initiation, entrainment, and flow dynamics.

This debris flow took place July 19, 2017. The video includes a single view of an instrumented

...
Johanna Blake demonstrates how to use a water quality sonde
June 21, 2017

Johanna Blake demonstrates how to use a water quality sonde

USGS NMWSC Hydrologists Johanna Blake and Jeb Brown attended the 2nd Annual Conference on Environmental Conditions of the Animas and San Juan Watersheds with Emphasis on Gold King Mine and other Mine Waste Issues in Farmington, NM from June 20-21. Johanna and Jeb presented on the USGS long-term monitoring work of continuous monitoring sondes, water quality, and sediment

...
Hydrologists doing field work near Farmington, NM
June 20, 2017

Hydrologists doing field work near Farmington, NM

USGS NMWSC Hydrologists Johanna Blake and Jeb Brown attended the 2nd Annual Conference on Environmental Conditions of the Animas and San Juan Watersheds with Emphasis on Gold King Mine and other Mine Waste Issues in Farmington, NM from June 20-21. Johanna and Jeb presented on the USGS long-term monitoring work of continuous monitoring sondes, water quality, and sediment

...
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Airborne electromagnetic system similar to that which will be used for the Silverton, Colorado survey.
March 25, 2019

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.

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.

Colorado River, Kawuneeche Valley, Grand County, Colorado
October 23, 2018

The University of Colorado Boulder has been selected as the new host for the North Central CASC.

Image: Collecting Data at an Alpine Lake
August 10, 2018

Earlier snowmelt affects many ecosystems worldwide, especially in montane settings. USGS and other federal and university scientists determined how alpine plant species respond to snow melt gradients in a high-alpine area of the Rocky Mountains in Colorado.

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.

UAS Vehicle
June 26, 2018

This Thursday, scientists with the U.S. Geological Survey and NASA will test new technologies near Parkdale, Colorado, located west of Cañon City, to better understand how unmanned aerial systems (UAS), or drones, may be used to measure water depth, water levels and velocity from the sky. 

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.

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.

Upstream view of Fountain Creek in Colorado
December 1, 2017

The U.S. Geological Survey just added more than 800 fish and macroinvertebrate data samples from Fountain Creek, Colorado, to the USGS BioData Retrieval system.

Lake Fork Creek below Sugarloaf dam near Leadville
November 17, 2017

Bringing together decades of research and mapping, the U.S. Geological Survey just released a geologic map and companion pamphlet featuring the Arkansas River Valley region in north-central Colorado.  

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