Unified Interior Regions

Region 7: Upper Colorado Basin

Map of Region 7: Upper Colorado Basin

Map of Region 7:  Upper Colorado Basin

Map Showing USGS/DOI Unified Region 7 and parts of adjoining Regions

Regions L2 Landing Page Tabs

USGS Science Centers in Region 7-Upper Colorado Basin conduct a large number of cooperative and collaborative projects with other agencies and partners. A sampling of those projects are shown below on this web page.

Filter Total Items: 388
Date published: December 7, 2016
Status: Active

Higher and Farther: Patterns of Development within Protected Areas

There is a well-known bias in the location of protected areas both within the US and globally. Lands protected for conservation tend to be located on less productive soils at high elevations far from cities. USGS is exploring whether this ‘high and far’ paradigm applies within protected areas as well. That is, does human modification within lands that already have some degree of protection,...

Date published: December 4, 2016
Status: Active

Biology, Impacts and Control of Invasive Reptiles in the Everglades

Invasive species are considered to be second only to habitat degradation in terms of negative impacts on the Earth’s ecosystems, and our scientists make up a significant proportion of the global expertise in the rapidly-growing problem of invasive reptiles.

Date published: December 3, 2016
Status: Active

Ecology and Management of Invasive Riparian Plants

Due to high rates of disturbance and human activity, streamside or “riparian” areas are prone to colonization and spread of invasive plants. In the western United States, hundreds of thousands of riparian acres are occupied by the invasive shrubs/trees tamarisk and Russian olive, as well as numerous exotic herbaceous plants. Our work focuses on understanding the factors driving the...

Date published: December 3, 2016
Status: Active

Erosion and Invasive Saltcedar

Formation of arroyos in the late 1800s greatly increased erosion across the southwestern United States. Since the 1930s, however, this erosion has decreased, partly because of bank stabilization by introduced saltcedar. With Isleta Pueblo Indian Nation, the Aquatic Systems Branch developed a new sediment dating method using saltcedar tree rings. We applied the method in a landmark study of...

Date published: December 2, 2016
Status: Active

USGS Everglades Research Offices - Florida

The Daniel Beard Center in Everglades National Park provides the base for most of the field work done on the control of invasive reptiles by USGS Fort Collins Science Center staff. The team works in Everglades National Park, Big Cypress National Preserve, Crocodile Lake National Wildlife Refuge, and other parts of the Greater Everglades Ecosystem focusing on, among other species of concern,...

Date published: December 1, 2016
Status: Active

USGS Brown Treesnake Laboratory and Rapid Response Facility - Guam

USGS scientists and staff associated with the Brown Treesnake Project are co-located at the Guam National Wildlife Refuge at the northern end of Guam in the western Pacific Ocean. Project staff work on developing and testing control tools for invasive brown treesnakes, as well as understanding their impacts on Guam's ecosystems. Project staff also lead the multi-agency Brown Treesnake Rapid...

Date published: December 1, 2016
Status: Active

Riparian Ecology

Riparian ecologists at the Fort Collins Science Center study interactions among flow, channel change, and vegetation along rivers across the western United States and worldwide. Our work focuses on issues relevant to the management of water and public lands, including dam operation, climate change, invasive species, and ecological restoration. Investigations take place on a range of scales. ...

Date published: November 29, 2016
Status: Archived

Riparian Vegetation Response to Dam Removal

Dam removal is an approach to river restoration that is becoming increasingly common. In most cases, dam removal is driven by considerations other than river restoration like dam safety, but how dam removal affects aquatic and riparian systems is of great interest in many dam removals. My work in this area has had two areas of focus thus far: 1) studies of vegetation and geomorphic change...

Date published: November 29, 2016
Status: Active

Science to Inform Riparian Ecosystem Restoration and Management

Throughout the world, riparian habitats have been dramatically modified from their natural condition. Dams, non-native species and climate change are often principal drivers of these changes, via their alteration of water and sediment regimes that determine key resources for riparian plants.

Date published: November 28, 2016
Status: Active

Biological Invasions of Riparian Ecosystems

Beginning in the early twentieth century, non-native trees and shrubs, including tamarisk (also commonly known as saltcedar) and Russian-olive, were introduced to the United States for use as ornamental plants and in erosion-control plantings. These plants spread extensively, becoming the third and fourth most frequently occurring woody riparian plants in the American West.

 

Date published: November 28, 2016
Status: Active

Streamflow-fluvial Geomorphology-riparian Vegetation Interactions

The foundation for applying science to river and riparian restoration contexts lies in a basic understanding of the factors that drive riparian vegetation dynamics. Much of our research is focused on clarifying relationships between streamflow, fluvial geomorphology, and riparian vegetation, including various feedbacks.

Date published: November 21, 2016
Status: Archived

Status and Breeding Ecology of the Arizona Grasshopper Sparrow

The Arizona Grasshopper Sparrow (Ammodramus savannarum ammolegus) is a disjunct race that breeds in desert grasslands of southeastern Arizona, extreme southwestern New Mexico, and adjacent parts of northern Sonora and Chihuahua, Mexico.

USGS Science Centers in Region 7-Upper Colorado Basin collect a wide variety of natural resource data types including spatial, geologic, hydrologic, and biologic data. Data included in USGS-series publications that are not publically available in USGS databases are published in Data Releases. Tools are USGS products that can be used to analyze those types of data.

Filter Total Items: 279
Date published: January 1, 2018

Agricultural Wells for the Rio Grande transboundary integrated hydrologic model and water-availability analysis, New Mexico and Texas, United States, and Northern Chihuahua, Mexico

This point vector dataset represents 3,959 agricultural well locations and attributes used as input data for the Rio Grande Transboundary Integrated Hydrologic Model (RGTIHM). Attributes include well construction information, historic water use information, and flags indicating assumptions made for modeling purposes. Data were compiled from various sources; see Supplemental Informatio

Date published: January 1, 2018

RGTIHM Acreage by WBS

This dataset contains the model-simulated area of 57 water-balance subregions (WBS) in the Rio Grande Transboundary Integrated Hydrologic Model (RGTIHM) within the six canal service units used in the Lower Rio Grande Basin groundwater flow model (SSPA, 2007), as well as the fraction of the area of each WBS with irrigation-water supplied by a combination of groundwater and surface-

Date published: November 1, 2017

Geodatabase supporting the assessment of hydrologic resources and the potential effects from oil and gas development in the Bureau of Land Management Tri-County Planning Area, Sierra, Doña Ana, and Otero Counties, New Mexico

This U.S. Geological Survey (USGS) data release presents the geospatial data used to assess the hydrologic resources and the potential effects from oil and gas development in the Bureau of Land Management Tri-County Planning Area, Sierra, Doña Ana, and Otero Counties, New Mexico.

Date published: November 1, 2017

Geodatabase supporting the assessment of hydrologic resources and the potential effects from oil and gas development in the Bureau of Land Management Tri-County Planning Area, Sierra, Doña Ana, and Otero Counties, New Mexico

This U.S. Geological Survey (USGS) data release presents the geospatial data used to assess the hydrologic resources and the potential effects from oil and gas development in the Bureau of Land Management Tri-County Planning Area, Sierra, Doña Ana, and Otero Counties, New Mexico.

Date published: September 28, 2017

Radio telemetry data on nighttime movements of two species of migratory nectar-feeding bats (Leptonycteris) in Hidalgo County, New Mexico, late-summer 2004 and 2005

These bat location estimates have been reported by Bogan and others and come in the form of a GIS shape file.

Date published: September 27, 2017

Cheatgrass mapping in Squirrel Creek Wildfire, WY in 2014

This data bundle contains some of the inputs, all of the processing instructions and all outputs from two VisTrails/SAHM workflow. These models specifically include field data of locations with >40% cover of cheatgrass (presence) and <40% cover of cheatgrass (absence). Predictors included rasters derived from LandSat 8 imagery or from a digital elevation model.

Date published: September 21, 2017

Habitat Data for Arizona Grasshopper Sparrow Territories, Nest Plots, and Random Transects, 2009 to 2013

These data provide information about vegetation structure and composition associated with Arizona Grasshopper Sparrow territories, nest plots, and random transects on two study sites in southeastern Arizona. Data were collected from 2009 through 2013.

Date published: September 12, 2017

Argon data for Poncha Pass Map

This dataset accompanies publication 'Geologic Map of the Poncha Pass Area, Chaffee, Fremont, and Saguache Counties, Colorado'.

Date published: September 1, 2017

National Water Information System web interface (NWISweb)

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.

Date published: August 31, 2017

Topographic Survey Data of Fountain Creek between Colorado Springs and the Confluence of Fountain Creek at the Arkansas River, Colorado, 2016

In 2012, the U.S. Geological Survey (USGS) in cooperation with Colorado Springs Utilities selected 10 reaches or study areas along Fountain Creek between Colorado Springs and the confluence of Fountain Creek at the Arkansas River for annual bed and bank characterization and topographic surveys. The 10 selected study areas are approximately 5 to 20 bank-full channel widths in length. The t...

Date published: August 28, 2017

Topographic Survey Data of Fountain Creek between Colorado Springs and the Confluence of Fountain Creek at the Arkansas River, Colorado, 2017

In 2012, the U.S. Geological Survey (USGS) in cooperation with Colorado Springs Utilities selected 10 reaches or study areas along Fountain Creek between Colorado Springs and the confluence of Fountain Creek at the Arkansas River for annual bed and bank characterization and topographic surveys. The 10 selected study areas are approximately 5 to 20 bank-full channel widths in length. The t...

Date published: August 28, 2017

Topographic Survey Data from Photogrammetry of Fountain Creek between Colorado Springs and the Confluence of Fountain Creek at the Arkansas River, Colorado, 2017

In 2012, the U.S. Geological Survey (USGS) Colorado Water Science Center in cooperation with Colorado Springs Utilities selected 10 reaches or study area along Fountain Creek between Colorado Springs and the confluence of Fountain Creek at the Arkansas River for annual bed and bank characterization and topographic surveys. The 10 selected study areas are approximately 5 to 20 bank-full cha...

USGS Science Centers in Region 7-Upper Colorado Basin produce hundreds of USGS-series publications, journal papers, and books each year that are subject to rigorous review by USGS specialists. The publications shown below on this page are related to study areas and staff members of USGS Science Centers in Region 7 compiled from the USGS Publications Warehouse.

Filter Total Items: 5,333
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Year Published: 2021

Gondwanic inheritance on the building of the western Central Andes (Domeyko Range, Chile): Structural and thermochronological approach (U-Pb and 40Ar-39Ar)

Tectonics inheritance controls the evolution of many orogens. To unravel the role of the Gondwanan heritage (late Paleozoic to Triassic) over the building of the Central Andes in northern Chile (Domeyko Range), we performed detrital U‐Pb zircon and 40Ar/39Ar muscovite geochronology along with structural analyses (kinematics and structural...

Espinoza, Mauricio; Oliveros, Veronica; Vasquez, Paulina; Giambiagi, Laura; Morgan, Leah E.; Gonzalez, Rodrigo; Solari, Luigi; Bechis, Florencia

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Year Published: 2021

Uranium(VI) attenuation in a carbonate-bearing oxic alluvial aquifer

Uranium minerals are commonly found in soils and sediment across the United States at an average concentration of 2–4 mg/kg. Uranium occurs in the environment primarily in two forms, the oxidized, mostly soluble uranium(VI) form, or the reduced, sparingly soluble reduced uranium(IV) form. Here we describe subsurface geochemical conditions...

Nolan, PJ; Bone, S; Campbell, Kate M.; Pannell, David; Healy, O; Stange, M; Bargar, J; Weber, KA

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Year Published: 2021

Using high sample rate lidar to measure debris-flow velocity and surface geometry

Debris flows evolve in both time and space in complex ways, commonly starting as coherent failures but then quickly developing structures such as roll waves and surges. These processes are readily observed but difficult to study or quantify because of the speed at which they evolve. Many methods for studying debris flows consist of point...

Rengers, Francis K.; Rapstine, Thomas D; Olsen, Michael; Allstadt, Kate; Iverson, Richard M.; Leshchinsky, Ben; Obryk, Maciej; Smith, Joel B.

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Year Published: 2021

LA-ICPMS U-Pb dating reveals cassiterite inheritance in the Yazov granite, Eastern Siberia: Implications for tin mineralization

U-Pb dating of cassiterite and zircon from the Yazov granite (Transbaikalia region, Eastern Siberia, Russia) and cassiterite from spatially associated tin mineralization in the Tuyukan ore district in the Tonod uplift was conducted using in situ laser ablation inductively coupled plasma mass spectrometry. These analyses allow comparison of...

Neymark, Leonid A.; Holm-Denoma, Christopher S.; Larin, Anatoly; Moscati, Richard J.; Plotkina, Yulia

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Year Published: 2021

Modeling hydrologic processes associated with soil saturation and debris flow initiation during the September 2013 storm, Colorado Front Range

Seven days of extreme rainfall during September 2013 produced more than 1100 debris flows in the Colorado Front Range, about 78% of which occurred on south-facing slopes (SFS). Previously published soil moisture (volumetric water content) observations suggest that SFS were wetter than north-facing slopes (NFS) during the event, which contrasts...

Timilsina, Sujana; Niemann, Jeffrey D.; Rathburn, Sara L.; Rengers, Francis K.; Nelson, Peter A.

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Year Published: 2021

Geology and genesis of the Shalipayco evaporite-related Mississippi Valley-type Zn–Pb deposit, Central Peru: 3D geological modeling and C–O–S–Sr isotope constraints

The Shalipayco Zn–Pb deposit, in central Peru, is composed of several stratabound orebodies, the largest of which are the Resurgidora and Intermedios, contained in carbonate rocks of the Upper Triassic Chambará Formation, Pucará group. Petrography suggests that a single ore-forming episode formed sphalerite and galena within vugs, open spaces, and...

de Oliveira, Saulo B; Johnson, Craig A.; Juliani, Caetano; Monteiro, Lena VS; Leach, David L; Caran, Marianna G.N.

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Year Published: 2021

Toward physics-based nonergodic PSHA: A prototype fully-deterministic seismic hazard model for southern California

We present a nonergodic framework for probabilistic seismic‐hazard analysis (PSHA) that is constructed entirely of deterministic, physical models. The use of deterministic ground‐motion simulations in PSHA calculations is not new (e.g., CyberShake), but prior studies relied on kinematic rupture generators to extend empirical earthquake rupture...

Milner, Kevin R.; Shaw, Bruce E.; Goulet, Christine A.; Richards-Dinger, Keith B.; Callaghan, Scott; Jordan, Thomas H.; Dieterich, James H.; Field, Edward H.

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Year Published: 2021

A subset of CyberShake ground-motion time series for response-history analysis

This manuscript describes a subset of CyberShake numerically simulated ground motions that were selected and vetted for use in engineering response-history analyses. Ground motions were selected that have seismological properties and response spectra representative of conditions in the Los Angeles area, based on disaggregation of seismic hazard....

Baker, Jack W.; Rezaeian, Sanaz; Goulet, Christine A.; Luco, Nicolas; Teng, Ganyu

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Year Published: 2021

Mesozoic magmatism in Montana

From crystalline batholiths with footprints larger than 4,500 km2 to beds of micron-sized ash particles, a record of Mesozoic magmatism is found throughout Montana. Mesozoic igneous rocks are an important natural resource in the state because of their association with precious metal ores and industrial mineral deposits. Mesozoic magmatism in...

Scarberry, Kaleb C.; Yakovlev, Petr V.; Schwartz, Theresa Maude

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Year Published: 2021

River terrace evidence of tectonic processes in the eastern North American plate interior, South Anna River, Virginia

We show that long-recognized seismicity in the central Virginia seismic zone (CVSZ) of the eastern North American (ENAM) intraplate setting arises primarily from tectonic processes predicted by new, fully coupled plate tectonic geodynamic models. The study leverages much new geophysical and geologic data following the 2011 Mineral, VA earthquake...

Pazzaglia, Frank J.; Malenda, Helen F.; McGavick, Matthew L.; Raup, Cody; Carter, Mark W.; Berti, Claudio; Mahan, Shannon A.; Nelson, Michelle S.; Rittenour, Tammy M.; Counts, Ron; Willenbring, Jane K; Germanoski, Dru; Peters, Stephen C.; Holt, William D.

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Year Published: 2021

Atmospheric processing of iron-bearing mineral dust aerosol and its effect on growth of a marine diatom, Cyclotella meneghiniana

Iron (Fe) is a growth-limiting micronutrient for phytoplankton in major areas of oceans and deposited wind-blown desert dust is a primary Fe source to these regions. Simulated atmospheric processing of four mineral dust proxies and two natural dust samples followed by subsequent growth studies of the marine planktic diatom Cyclotella...

Hettiarachchi, Eshani; Ivanov, Sergei; Kieft, Thomas L.; Goldstein, Harland L.; Moskowitz, Bruce M.; Reynolds, Richard L.; Rubasinghege, Gayan

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Year Published: 2021

Evaluation of simulated ground motions using probabilistic seismic demand analysis: CyberShake (ver. 15.12) simulations for Ordinary Standard Bridges

There is a need for benchmarking and validating simulated ground motions in order for them to be utilized by the engineering community. Such validation may be geared towards a specific ground motion simulation method, a target engineering application, and a specific location; the validation presented herein focuses on a bridge engineering...

Fayaz, Jawad; Rezaeian, Sanaz; Zareian, Farzin

Photos and videos described and linked on this webpage come from a wide variety of USGS science activities and presentations performed by USGS Science Center staff members in the Region 7-Upper Colorado Basin.

Filter Total Items: 525
Ice patch in Greater Yellowstone Ecosystem
August 12, 2016

Ice patch in Greater Yellowstone Ecosystem

An ancient ice patch located in the northeastern corner of the Greater Yellowstone Ecosystem

Ice patch in Greater Yellowstone Ecosystem
August 12, 2016

Ice patch in Greater Yellowstone Ecosystem

An ancient ice patch located in the northeastern corner of the Greater Yellowstone Ecosystem.

Researchers Scouting a Drilling Location on an Ice Patch
August 12, 2016

Researchers Scouting a Drilling Location on an Ice Patch

Craig Lee and Mike Jayred scout a potential drilling location for extracting an ice core.

A white-tailed ptarmigan on Mt. Evans, Colorado
August 9, 2016

A white-tailed ptarmigan on Mt. Evans, Colorado

A white-tailed ptarmigan on Mt. Evans, a fourteener in Northern Colorado.

A white-tailed ptarmigan on Mt. Evans, Colorado
August 9, 2016

A white-tailed ptarmigan on Mt. Evans, Colorado

A white-tailed ptarmigan sits on the side of Mt. Evans in northern Colorado.  

Photo of USGS scientists prepare water-quality instruments before going out on the Great Salt Lake.
August 9, 2016

USGS scientists prepare water-quality instruments

USGS scientists prepare water-quality instruments before going out on the Great Salt Lake. USGS scientists are conducting a study to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.

 

Photo of USGS scientists conducting a study on the Great Salt Lake.
August 9, 2016

USGS scientists conducting a study on the Great Salt Lake

USGS scientists conducting a study on the Great Salt Lake to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.

Photo of USGS scientists conducting a study on the Great Salt Lake.
August 9, 2016

USGS scientists conducting a study on the Great Salt Lake

USGS scientists conducting a study on the Great Salt Lake to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.

Photo of a USGS scientist measuring nutrient levels in Goggin Drain, Utah.
August 8, 2016

USGS scientist measures nutrient levels

USGS scientist Mike Freeman measures nutrient levels in Goggin Drain, Utah. USGS scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.

Photo of USGS scientists measuring nutrient levels in Goggin Drain, Utah.
August 8, 2016

USGS scientists measure nutrient levels

USGS scientists Christopher L. Shope, Bryan Downing, Katy O'Donnell and Mike Freeman measure nutrient levels in Goggin Drain, Utah. USGS scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.

Photo of USGS scientists measuring nutrient levels in Goggin Drain, Utah.
August 8, 2016

Scientists measure nutrient levels

USGS scientists Christopher L. Shope, Bryan Downing, Katy O'Donnell and Mike Freeman measure nutrient levels in Goggin Drain, Utah. USGS scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.

Photo of USGS scientists measuring nutrient levels in Goggin Drain, Utah.
August 8, 2016

Utah Nutrient Study

USGS scientists Bryan Downing, Mike Freeman and Katy O'Donnell measure nutrient levels in Goggin Drain, Utah. USGS scientists are conducting an experimental study on two Utah water bodies to gain a better understanding of nutrient levels, which could help determine how to best manage algal bloom outbreaks.

News items shown on this page are highlights of selected studies conducted and publications produced by USGS Science Center staff members in Region 7-Upper Colorado Basin.

Filter Total Items: 363
USGS
February 1, 2012

Citizens should not be alarmed if they witness a low-flying helicopter over the Great Sand Dunes National Park in the next couple of weeks. 

USGS
February 1, 2012

Groundwater withdrawals for crop irrigation have increased to over 16 million acre-feet per year in the High Plains Aquifer, according to a recent U.S. Geological Survey study.

USGS science for a changing world logo
December 28, 2011

A newly released U.S. Geological Survey study of decreasing groundwater resources in the Denver Basin aquifer provides information on water movement within the system and how it responds to changes in climatic and human activities.

USGS science for a changing world logo
December 1, 2011

Dr. Jeffrey Morisette has been selected as the Director of the Department of the Interior’s North Central Climate Science Center (NC CSC) located at Colorado State University in Fort Collins.

USGS science for a changing world logo
October 31, 2011

When it comes to nesting, birds are no different than people – they want the best for their young, places with abundant food and shelter and a safe place to successfully raise their young. 

USGS science for a changing world logo
October 27, 2011

A harmless red dye will temporarily discolor the south end of Great Salt Lake for scientific research purposes starting on or about Nov. 1.

USGS science for a changing world logo
October 25, 2011

The sand dunes among which Navajos have eked out austere livings for generations are growing fast and becoming mobile as the climate changes, says U.S. Geological Survey geologist Dr. Margaret Hiza Redsteer, whose interviews with elders and historical research augment her decade-long research on Navajo Nation land.

USGS science for a changing world logo
October 21, 2011

FLAGSTAFF, Ariz. – The sand dunes among which Navajos have eked out austere livings for generations are growing fast and becoming mobile as the climate changes, says U.S. Geological Survey geologist Dr. Margaret Hiza Redsteer, whose interviews with elders and historical research augment her decade-long research on Navajo Nation land.

USGS science for a changing world logo
October 17, 2011

Dr. Sasha Reed, a research ecologist with the U.S. Geological Survey, was named one of President Obama's recipients of the Presidential Early Career Award for Scientists and Engineers, the highest honor bestowed by the United States government on science and engineering professionals in the early stages of their independent research careers.

USGS science for a changing world logo
October 17, 2011

Citizens and visitors should not be alarmed if they witness a low-flying helicopter, with a large boom extending from its nose, flying back and forth in the northern San Luis Valley or near Salida during October and November. 

USGS science for a changing world logo
October 7, 2011

Citizens and visitors should not be alarmed if they witness a low-flying helicopter, with a large wire-loop contraption hanging from a cable underneath, flying over the Great Sand Dunes National Park in the next couple of weeks. 

USGS science for a changing world logo
September 28, 2011

Groundwater pumping, which has been increasing since the 1940s, now accounts for about one third of the estimated annual flow from the aquifers of the eastern Great Basin. In parts of this region, groundwater pumping exceeds the rate of natural discharge, leading to land subsidence and declines in water levels and spring flow. 

This page includes links to Social Media accounts (top of page), Science Centers (middle of page), and Regional Office staff members (bottom of page) of the USGS Region 7--Upper Colorado Basin.

USGS Science Centers in Region 7-Upper Colorado Basin conduct a large number of cooperative, co-funded science and monitoring projects with many other Federal, Tribal, State, and local agencies. Please scroll below to see the agencies with which those Science Centers currently have cooperative agreements.

Filter Total Items: 324