Unified Interior Regions

Colorado

The Rocky Mountain Region ranges from the Colorado Rockies to the Western Deserts to the Great Plains. The Rocky Mountain Region conducts multi- and interdisciplinary research and monitoring in locations across the Region, the United States, around the world, and across our solar system.

States L2 Landing Page Tabs

Filter Total Items: 207
Date published: September 30, 2007
Status: Completed

Simulated Effects of Proposed Southern Delivery System Alternatives on Hydrodynamics and Water Quality of Pueblo Reservoir Using a Two-Dimensional Hydrodynamic and Water-Quality Model, Pueblo, Colorado

Pueblo Reservoir is one of southeastern Colorado's most valuable water resources. The reservoir provides irrigation, municipal, and industrial water to various entities throughout the region. The reservoir also provides flood control, recreational activities, sport fishing, and wildlife enhancement to the region.

The Bureau of Reclamation is working to meet its goal to issue a Final...

Contacts: David P Mau
Date published: September 29, 2007
Status: Completed

The Plan | USGS Abandoned Mine Lands Initiative

This is a section of the USGS Abandoned Mine Lands Initative (AMLI) site.

A Plan for the USGS Abandoned Mine Lands Initiative, 1997 - 2001

Prepared by: The USGS Initiative Implementation Team, and the Colorado and Montana Watershed Teams

Date published: September 28, 2007
Status: Completed

Upper Animas River Study Area | USGS Abandoned Mine Lands Initiative

This is a section of the USGS Abandoned Mine Lands Initative (AMLI) site.

Upper Animas River Watershed, Colorado Study Area

Date published: August 8, 2007
Status: Completed

Groundwater Availability Analysis of the Denver Groundwater Basin

The Denver Basin aquifer system is a critical water resource for growing municipal, industrial, and domestic uses along the semiarid Front Range urban corridor of Colorado. The confined bedrock aquifer system is located along the eastern edge of the Rocky Mountain Front Range where the mountains meet the Great Plains physiographic province. Mining, transportation, agricultural,
and urban...

Contacts: Suzanne Paschke
Date published: August 2, 2007
Status: Completed

Prediction of suspended-sediment transport and identification of sediment source areas in the Fountain Creek watershed

 The Fountain Creek drainage network currently is in a precarious geomorphic situation. This situation arises because:

  1. the Palmer Divide and the Rampart Range have the potential to cause very high orographically induced rainfall rates
  2. east of the foothills, streams within the watershed flow through valley bottoms filled with easily eroded alluvial sediments
  3. there
  4. ...
Date published: May 17, 2007
Status: Active

Comprehensive Water-Quality Study for the Arkansas River Basin, Colorado

Changes in land and water use associated with population growth and agricultural practices within the Arkansas River Basin are likely to affect water-quality on a local and, possibly, a basin-wide scale. To manage the limited water resources in the basin most effectively it is important to understand the processes that affect water quality within the basin and how future changes in land and...

Date published: December 15, 2006
Status: Completed

Aquatic communities and associated water chemistry in the St. Vrain River near the City of Longmont wastewater-treatment plant

The St. Vrain River watershed in northeastern Colorado has experienced rapid urban growth over the last two decades. Population growth has led to increased volumes being treated at wastewater-treatment plants (WWTPs) in the basin. In the last two decades, in-stream restoration efforts and new treatment technologies have been implemented by the City of Longmont, with the goal of improving water...

Contacts: Nancy J Bauch
Date published: November 21, 2006
Status: Completed

RCMAP - Lake Fork at Gateview, Colorado

The U.S. Geological Survey was engaged in a program to monitor and assess the long-term geomorphic behavior of selected river and stream reaches that previously had undergone some physical modification.  These modifications included natural channel adjustments to floods as well as intentional channel reconfigurations to alter the function or appearance of a river reach.

Land use in the...

Contacts: Cory A Williams
Date published: October 19, 2005
Status: Completed

Multidisciplinary Approach to Remediating Watersheds Contaminated from Abandoned Mine Lands

Since the late 1990s, the U.S. Geological Survey (USGS) has conducted an Abandoned Mine Lands (AML) Initiative. The initiative provides technical assistance to support actions by Federal Land Management Agencies in the U.S. Department of the Interior and the...

Date published: October 1, 2005
Status: Completed

Numerical simulation of the cumulative effects of land-use change and aggregate mines on ground-water flow and wetlands along the South Platte River, Brighton to Fort Lupton, Colorado

The South Platte River valley between the City of Brighton in Adams County and the town of Fort Lupton in Weld County, Colorado, contains many wetland areas that provide habitat for wildlife in the Front Range Urban Corridor. The extent of aggregate mining along this reach of the South Platte River valley continues to increase as the demand for aggregate grows in response to urban development...

Contacts: Suzanne Paschke
Date published: August 20, 2004
Status: Completed

Water, Energy, and Biogeochemical Budgets (WEBB): Loch Vale Watershed

Loch Vale is an alpine/subalpine watershed in Rocky Mountain National Park where the U.S. Geological Survey has been conducting research since the 1980s. Our research has focused on the effects of climate change and atmospheric pollutants on water, soil, vegetation, and aquatic life. The alpine/subalpine ecosystem in Loch Vale is sensitive to changes in climate and air pollution. Our long-term...

Date published: August 8, 2004
Status: Completed

South Platte Decision Support System (SPDSS) Well Installation and Aquifer Testing in Shallow Alluvial and Bedrock Aquifers, Adams County, Colorado

The South Platte Decision Support System (SPDSS) is a data base system being developed by the Colorado Water Conservation Board (CWCB) to provide water users, managers, and State of Colorado agencies access to important information related to water management issues affecting the South Platte River system.

Contacts: Suzanne Paschke
Filter Total Items: 407
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Year Published: 2011

Direction of unsaturated flow in a homogeneous and isotropic hillslope

The distribution of soil moisture in a homogeneous and isotropic hillslope is a transient, variably saturated physical process controlled by rainfall characteristics, hillslope geometry, and the hydrological properties of the hillslope materials. The major driving mechanisms for moisture movement are gravity and gradients in matric potential. The...

Lu, Ning; Kaya, Basak Sener; Godt, Jonathan W.

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Year Published: 2011

Agricultural herbicide transport in a first-order intermittent stream, Nebraska, USA

The behavior of herbicides in surface waters is a function of many variables, including scale of the watershed, physical and chemical properties of the herbicide, physical and chemical properties of the soil, rainfall intensity, and time of year. In this study, the transport of 6 herbicides and 12 herbicide degradates was examined during the 2004...

Vogel, J.R.; Linard, J.I.
Agricultural herbicide transport in a first-order intermittent stream, Nebraska, USA; 2011; Article; Journal; Applied Engineering in Agriculture; Vogel, J. R.; Linard, J. I.

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Year Published: 2011

Biosolids, crop, and groundwater data for a biosolids-application area near Deer Trail, Colorado, 2007 and 2008

During 2007 and 2008, the U.S. Geological Survey monitored the chemical composition of biosolids, crops, and groundwater related to biosolids applications near Deer Trail, Colorado, in cooperation with the Metro Wastewater Reclamation District. This monitoring effort was a continuation of the monitoring program begun in 1999 in cooperation with...

Yager, Tracy J.B.; Smith, David B.; Crock, James G.
Biosolids, crop, and groundwater data for a biosolids-application area near Deer Trail, Colorado, 2007 and 2008; 2011; DS; 589; Yager, Tracy J.B.; Smith, David B.; Crock, James G.

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Year Published: 2011

Estimated probabilities and volumes of postwildfire debris flows, a prewildfire evaluation for the upper Blue River watershed, Summit County, Colorado

Debris flows resulting from rainfall on recently burned, rugged, forested areas create potential hazards to life, property, infrastructure, and water resources. The location, extent, and severity of wildfire and the subsequent rainfall intensity and duration cannot be known in advance. However, hypothetical scenarios based on empirical debris-flow...

Elliott, John G.; Flynn, Jennifer L.; Bossong, Clifford R.; Char, Stephen J.
Estimated probabilities and volumes of postwildfire debris flows, a prewildfire evaluation for the upper Blue River watershed, Summit County, Colorado; 2011; SIR; 2011-5039; Elliott, John G.; Flynn, Jennifer L.; Bossong, Clifford R.; Char, Stephen J.

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Year Published: 2011

Well installation, single-well testing, and particle-size analysis for selected sites in and near the Lost Creek Designated Ground Water Basin, north-central Colorado, 2003-2004

This report describes results from a groundwater data-collection program completed in 2003-2004 by the U.S. Geological Survey in support of the South Platte Decision Support System and in cooperation with the Colorado Water Conservation Board. Two monitoring wells were installed adjacent to existing water-table monitoring wells. These wells were...

Beck, Jennifer A.; Paschke, Suzanne S.; Arnold, L. Rick
Well installation, single-well testing, and particle-size analysis for selected sites in and near the Lost Creek Designated Ground Water Basin, north-central Colorado, 2003-2004; 2011; OFR; 2011-1024; Beck, Jennifer A.; Paschke, Suzanne S.; Arnold, L. Rick

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Year Published: 2011

Estimates of deep-percolation return flow beneath a flood- and a sprinkler-irrigated site in Weld County, Colorado, 2008-2009

Arnold, L.R.
Estimates of deep-percolation return flow beneath a flood- and a sprinkler-irrigated site in Weld County, Colorado, 2008-2009; 2011; SIR; 2011-5001; Arnold, L.R.

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Year Published: 2011

Use of diverse geochemical data sets to determine sources and sinks of nitrate and methane in groundwater, Garfield County, Colorado, 2009

Previous water-quality assessments reported elevated concentrations of nitrate and methane in water from domestic wells screened in shallow zones of the Wasatch Formation, Garfield County, Colorado. In 2009, the U.S. Geological Survey, in cooperation with the Colorado Department of Public Health and Environment, analyzed samples collected from 26...

McMahon, P.B.; Thomas, J.C.; Hunt, A.G.
Use of diverse geochemical data sets to determine sources and sinks of nitrate and methane in groundwater, Garfield County, Colorado, 2009; 2011; SIR; 2010-5215; McMahon, P. B.; Thomas, J. C.; Hunt, A. G.

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Year Published: 2011

Response of lake chemistry to changes in atmospheric deposition and climate in three high-elevation wilderness areas of Colorado

Trends in precipitation chemistry and hydrologic and climatic data were examined as drivers of long-term changes in the chemical composition of high-elevation lakes in three wilderness areas in Colorado during 1985–2008. Sulfate concentrations in precipitation decreased at a rate of −0.15 to −0.55 μeq/l/year at 10 high-elevation National...

Mast, Alisa; Turk, John T.; Clow, David W.; Campbell, Donald H.

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Year Published: 2011

Seismic and geodetic signatures of fault slip at the Slumgullion Landslide Natural Laboratory

We tested the hypothesis that the Slumgullion landslide is a useful natural laboratory for observing fault slip, specifically that slip along its basal surface and side-bounding strike-slip faults occurs with comparable richness of aseismic and seismic modes as along crustal- and plate-scale boundaries. Our study provides new constraints on models...

Gomberg, J.; Schulz, W.; Bodin, P.; Kean, J.
Seismic and geodetic signatures of fault slip at the Slumgullion Landslide Natural Laboratory; 2011; Article; Journal; Journal of Geophysical Research B: Solid Earth; Gomberg, J.; Schulz, W.; Bodin, P.; Kean, J.

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Year Published: 2011

Semi-quantitative evaluation of fecal contamination potential by human and ruminant sources using multiple lines of evidence

Protocols for microbial source tracking of fecal contamination generally are able to identify when a source of contamination is present, but thus far have been unable to evaluate what portion of fecal-indicator bacteria (FIB) came from various sources. A mathematical approach to estimate relative amounts of FIB, such as Escherichia coli, from...

Stoeckel, D.M.; Stelzer, Erin A.; Stogner, Sr., Robert W.; Mau, David P.

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Year Published: 2011

Simulating the potential effects of climate change in two Colorado basins and at two Colorado ski areas

The mountainous areas of Colorado are used for tourism and recreation, and they provide water storage and supply for municipalities, industries, and agriculture. Recent studies suggest that water supply and tourist industries such as skiing are at risk from climate change. In this study, a distributed-parameter watershed model, the Precipitation-...

Battaglin, William; Hay, Lauren E.; Markstrom, Steve

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Year Published: 2010

Influence of hummocks and emergent vegetation on hydraulic performance in a surface flow wastewater treatment wetland

A series of tracer experiments were conducted biannually at the start and end of the vegetation growing season in a surface flow wastewater treatment wetland located near Phoenix, AZ. Tracer experiments were conducted prior to and following reconfiguration and replanting of a 1.2 ha treatment wetland from its original design of alternating shallow...

Keefe, Steffanie H.; Daniels, Joan S.; Runkel, Robert L.; Wass, Roland D.; Stiles, Eric A.; Barber, Larry B.
Influence of hummocks and emergent vegetation on hydraulic performance in a surface flow wastewater treatment wetland; 2010; Article; Journal; Water Resources Research; Keefe, Steffanie H.; Daniels, Joan S. (Thullen); Runkel, Robert L.; Wass, Roland D.; Stiles, Eric A.; Barber, Larry B.

Filter Total Items: 196
USGS
October 10, 2018

Internship: Extending subduction zone earthquake hazard assessments...

Extending subduction zone earthquake hazard assessments to risk

Summary: Subduction zone earthquakes, like “The Really Big One” described in a 2015 issue of The New Yorker magazine, can generate ground shaking that lasts several minutes. Typical earthquake risk assessments do not account for such long-duration ground shaking. Earthquake engineers and scientists at

USGS
October 10, 2018

Internship: Geophysical studies into the architecture of large...

Geophysical studies into the architecture of large igneous systems hosting magmatic ore deposits

Project Hypothesis or Objectives: Exploring for the critical platinum-group elements (PGEs) relies upon understanding the geophysical signature of the entire magmatic system in which they form, from bottom to top. The USGS is applying a range of geophysical techniques to

USGS
October 10, 2018

Internship: High Performance Computing for the Advancement of Earth...

High Performance Computing for the Advancement of Earth Science

Summary: Work with USGS scientists to apply high performance computing principles and techniques to solve national and international earth science challenges.

USGS
October 10, 2018

Internship: Plant and insect invasions and novel host use

Plant and insect invasions and novel host use.

Summary: Plants and insects comprise a large portion of problematic invasive species. The success of these invasions largely depends on the outcomes of plant-insect interactions in which plants that escape herbivores may be more successful invaders, and herbivores that find adequate hosts have the opportunity to

USGS
October 10, 2018

Internship: The Influence of Natural Organic Matter on the...

The Influence of Natural Organic Matter on the Biogeochemistry, Fate and Transport of Metals, Metal Colloids and Nanoparticles in the Aquatic Environment

Summary: This work will explore the frontiers of organic-inorganic geochemistry by investigating the fundamental nature of dissolved organic matter (DOM)-metal interactions for metals and nanomaterials of

USGS
October 10, 2018

Internship: Yellowstone National Park Integrated Studies

Yellowstone National Park Integrated Studies

Summary: The subsurface structure and mineralogy of Yellowstone thermal areas is not well understood. 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

TNMCorps Mapping Challenge: Schools in CO NoHistory as of 08/05/21

A before-and-after image showing the change in edits between 7/29/21 and 8/05/21. Volunteers edited over 400 points during this timeframe (public domain). 

Channel Surveys Muddy Creek below Wolford Mountain Reservoir near Kremmling, Colorado
October 19, 2018

Channel Surveys from Muddy Creek near Kremmling

This channel survey record from Muddy Creek near Kremmling contains a map of each monitored reach and channel survey graphs for each cross-section within each reach.

Filter Total Items: 213
USGS
December 16, 2002

The USGS has just completed an assessment of undiscovered, technically recoverable oil and natural gas resources in five geologic basins in the Rocky Mountain region.

USGS science for a changing world logo
December 3, 2002

Two reports published in a leading science journal cast doubt on the importance of ultraviolet-b radiation (UV-B) as a factor driving amphibian population declines. Scientists with the U.S. Geological Survey (USGS), the University of Washington, and the U.S. Environmental Protection Agency just released their research findings in the journal Ecology.

USGS
October 28, 2002

Scientists from the U.S. Geological Survey (USGS) will present new research on a variety of topics at the annual GSA meeting at the Colorado Convention Center in Denver, October 27-30. A few highlights include:

USGS science for a changing world logo
December 28, 2001

New GPS users, or people considering buying a GPS receiver, as well as, hikers, hunters, and other outdoor enthusiasts will benefit from the free workshops offered by the USGS on map reading, compass reading, and using GPS.

USGS
December 28, 2001

New GPS users, or people considering buying a GPS receiver, as well as, hikers, hunters, and other outdoor enthusiasts will benefit from the free workshops offered by the USGS on map reading, compass reading, and using GPS.

USGS science for a changing world logo
June 12, 2001

The geology of Colorado National Monument and surrounding areas is presented in a new U.S. Geological Survey (USGS) map that is designed to serve visitors as well as students and the most ardent scientist.

USGS
June 12, 2001

The geology of Colorado National Monument and surrounding areas is presented in a new U.S. Geological Survey (USGS) map that is designed to serve visitors as well as students and the most ardent scientist. 

USGS
February 23, 2001

A new U.S. Geological Survey (USGS) assessment of the nation’s coal resources shows abundant high quality, low-sulfur coal on federal and private lands in the Colorado Plateau region of Arizona, Colorado, New Mexico and Utah. The area is also home to vast quantities of coal bed methane gas - natural gas contained in coal.

USGS science for a changing world logo
January 2, 2001

Nitrous oxide is an important atmospheric trace gas that contributes to the greenhouse effect and the destruction of ozone. Researchers hypothesize that one important source of atmospheric nitrous oxide is ground water, yet few studies have tested this hypothesis.

USGS
January 2, 2001

Nitrous oxide is an important atmospheric trace gas that contributes to the greenhouse effect and the destruction of ozone. Researchers hypothesize that one important source of atmospheric nitrous oxide is ground water, yet few studies have tested this hypothesis. 

USGS science for a changing world logo
December 7, 2000

Neither a tree-dweller nor a night bird, and roughly the size of a chicken, the Gunnison sage-grouse is not a particularly secretive bird yet just recently has it been identified as a new species of bird. 

USGS
December 7, 2000

Neither a tree-dweller nor a night bird, and roughly the size of a chicken, the Gunnison sage-grouse is not a particularly secretive bird yet just recently has it been identified as a new species of bird.

Filter Total Items: 213