Publications
Below is a list of available Colorado Water Science Center publications and published products.
Filter Total Items: 820
Rocky Mountain snowpack physical and chemical data for selected sites, 2010 Rocky Mountain snowpack physical and chemical data for selected sites, 2010
The Rocky Mountain Snowpack program established a network of snowpack-sampling sites in the Rocky Mountain region, from New Mexico to Montana, to monitor the chemical content of snow and to understand the effects of regional atmospheric deposition on freshwater systems. Scientists with the U.S. Geological Survey, in cooperation with the National Park Service; the U.S. Department of...
Authors
George P. Ingersoll, M. Alisa Mast, James M. Swank, Chelsea D. Campbell
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 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 installed as well pairs with existing...
Authors
Jennifer A. Beck, Suzanne S. Paschke, L. Rick Arnold
Simulation of hydraulic conditions and observed and potential geomorphic changes in a reconfigured reach of Muddy Creek, north-central Colorado, 2001-2008 Simulation of hydraulic conditions and observed and potential geomorphic changes in a reconfigured reach of Muddy Creek, north-central Colorado, 2001-2008
No abstract available.
Authors
J. G. Elliott, K.R. Schaffrath, R. R. McDonald, C.A. Williams, K.C. Davis
Use of diverse geochemical data sets to determine sources and sinks of nitrate and methane in groundwater, Garfield County, Colorado, 2009 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 domestic wells for a diverse set of...
Authors
P.B. McMahon, J.C. Thomas, A.G. Hunt
Characterization of hydrology and salinity in the Dolores project area, McElmo Creek region, southwest Colorado, water years 1978-2006 Characterization of hydrology and salinity in the Dolores project area, McElmo Creek region, southwest Colorado, water years 1978-2006
Increasing salinity loading in the Colorado River has become a major concern for agricultural and municipal water supplies. The Colorado Salinity Control Act was implemented in 1974 to protect and enhance the quality of water in the Colorado River Basin. The U.S. Geological Survey, in cooperation with the Bureau of Reclamation and the Colorado River Salinity Control Forum, summarized...
Authors
Rodney J. Richards, Kenneth J. Leib
Redox chemistry and natural organic matter (NOM): Geochemists' dream, analytical chemists' nightmare Redox chemistry and natural organic matter (NOM): Geochemists' dream, analytical chemists' nightmare
Natural organic matter (NOM) is an inherently complex mixture of polyfunctional organic molecules. Because of their universality and chemical reversibility, oxidation/reductions (redox) reactions of NOM have an especially interesting and important role in geochemistry. Variabilities in NOM composition and chemistry make studies of its redox chemistry particularly challenging, and details...
Authors
Donald L. Macalady, Katherine Walton-Day
Trends in lake chemistry in response to atmospheric deposition and climate in selected Class I wilderness areas in Colorado, Idaho, Utah, and Wyoming, 1993-2009 Trends in lake chemistry in response to atmospheric deposition and climate in selected Class I wilderness areas in Colorado, Idaho, Utah, and Wyoming, 1993-2009
In 2010, the U.S. Geological Survey, in cooperation with the U.S. Department of Agriculture Forest Service, Air Resource Management, began a study to evaluate long-term trends in lake-water chemistry for 64 high-elevation lakes in selected Class I wilderness areas in Colorado, Idaho, Utah, and Wyoming during 1993 to 2009. The purpose of this report is to describe trends in the chemical...
Authors
M. Alisa Mast, George P. Ingersoll
Occurrence of azoxystrobin, propiconazole, and selected other fungicides in US streams, 2005-2006 Occurrence of azoxystrobin, propiconazole, and selected other fungicides in US streams, 2005-2006
Fungicides are used to prevent foliar diseases on a wide range of vegetable, field, fruit, and ornamental crops. They are generally more effective as protective rather than curative treatments, and hence tend to be applied before infections take place. Less than 1% of US soybeans were treated with a fungicide in 2002 but by 2006, 4% were treated. Like other pesticides, fungicides can...
Authors
William A. Battaglin, Mark W. Sandstrom, Kathryn Kuivila, Dana W. Kolpin, Michael T. Meyer
Assessing possible visitor-use impacts on water quality in Yosemite National Park, California Assessing possible visitor-use impacts on water quality in Yosemite National Park, California
There is concern that visitor-use associated activities, such as bathing, dish washing, wastewater production, and stock animal use near lakes and streams, could cause degradation of water quality in Yosemite National Park. A study was conducted during 2004–2007 to assess patterns in nutrient and Escherichia coli (E. coli) concentrations in the Merced and Tuolumne Rivers and characterize...
Authors
David W. Clow, Rachael S. Peavler, Jim Roche, Anna K. Panorska, James M. Thomas, Steve Smith
Towards identifying the next generation of superfund and hazardous waste site contaminants Towards identifying the next generation of superfund and hazardous waste site contaminants
Background This commentary evolved from a workshop sponsored by the National Institute of Environmental Health Sciences titled "Superfund Contaminants: The Next Generation" held in Tucson, Arizona, in August 2009. All the authors were workshop participants. Objectives Our aim was to initiate a dynamic, adaptable process for identifying contaminants of emerging concern (CECs) that are...
Authors
Wendell P. Ela, David L. Sedlak, Morton A. Barlaz, Heather F. Henry, Derek C.G. Muir, Deborah L. Swackhamer, Eric J. Weber, Robert G. Arnold, P. Lee Ferguson, Jennifer A. Field, Edward T. Furlong, John P. Giesy, Rolf U. Halden, Tala Henry, Ronald A. Hites, Keri C. Hornbuckle, Philip H. Howard, Richard G. Luthy, Anita K. Meyer, A. Eduardo Saez, Frederick S. vom Saal, Chris D. Vulpe, Mark R. Wiesner
Response of lake chemistry to atmospheric deposition and climate in selected Class I wilderness areas in the western United States, 1993-2009 Response of lake chemistry to atmospheric deposition and climate in selected Class I wilderness areas in the western United States, 1993-2009
The U.S. Geological Survey, in cooperation with the U.S. Department of Agriculture Forest Service, Air Resource Management, conducted a study to evaluate long-term trends in lake-water chemistry for 64 high-elevation lakes in selected Class I wilderness areas in Colorado, Idaho, Utah, and Wyoming during 1993 to 2009. Understanding how and why lake chemistry is changing in mountain areas...
Authors
M. Alisa Mast