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: 409
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Year Published: 2003

Streamwater Quality Data from the 2002 Hayman, Hinman, and Missionary Ridge Wildfires, Colorado, 2003

Concern about water-quality issues related to wildfires in Colorado has intensified because of the wildfires that occurred in Colorado during the summer of 2002. In 2003, the U.S. Geological Survey (USGS) conducted water-quality sampling of burned and unburned watersheds in the areas affected by the Hayman, Hinman, and Missionary Ridge wildfires...

Ranalli, Anthony J.; Stevens, Michael R.
Streamwater Quality Data from the 2002 Hayman, Hinman, and Missionary Ridge Wildfires, Colorado, 2003; 2003; DS; 109; Ranalli, Anthony J.; Stevens, Michael R.

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Year Published: 2003

Using Logistic Regression To Predict the Probability of Debris Flows Occurring in Areas Recently Burned By Wildland Fires

Logistic regression was used to predict the probability of debris flows occurring in areas recently burned by wildland fires. Multiple logistic regression is conceptually similar to multiple linear regression because statistical relations between one dependent variable and several independent variables are evaluated. In logistic regression,...

Rupert, Michael G.; Cannon, Susan H.; Gartner, Joseph E.
Using Logistic Regression To Predict the Probability of Debris Flows Occurring in Areas Recently Burned By Wildland Fires; 2003; OFR; 2003-500; Rupert, Michael G.; Cannon, Susan H.; Gartner, Joseph E.

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Year Published: 2003

Using water-quality profiles to characterize seasonal water quality and loading in the upper Animas River basin, southwestern Colorado

One of the important types of information needed to characterize water quality in streams affected by historical mining is the seasonal pattern of toxic trace-metal concentrations and loads. Seasonal patterns in water quality are estimated in this report using a technique called water-quality profiling. Water-quality profiling allows land managers...

Leib, Kenneth J.; Mast, Alisa; Wright, Winfield G.
Using water-quality profiles to characterize seasonal water quality and loading in the upper Animas River basin, southwestern Colorado; 2003; WRI; 2002-4230; Leib, Kenneth J.; Mast, M. Alisa; Wright, Winfield G.

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Year Published: 2002

Analysis of geophysical logs from six boreholes at Lariat Gulch, former U.S. Air Force site PJKS, Jefferson County, Colorado

This report presents and describes geophysical logs for six boreholes in Lariat Gulch, a topographic gulch at the former U.S. Air Force site PJKS in Jefferson County near Denver, Colorado. Geophysical logs include gamma, normal resistivity, fluid-column temperature and resistivity, caliper, televiewer, and heat-pulse flowmeter. These logs were run...

Paillet, Frederick L.; Hodges, Richard E.; Corland, Barbara S.
Analysis of geophysical logs from six boreholes at Lariat Gulch, former U.S. Air Force site PJKS, Jefferson County, Colorado; 2002; OFR; 2002-364; Paillet, Frederick L.; Hodges, Richard E.; Corland, Barbara S.

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Year Published: 2002

Streamflow characteristics for selected stations in and near the Grand Mesa, Uncompahgre, and Gunnison National Forests, southwestern Colorado

The U.S Geological Survey, in cooperation with the Grand Mesa, Uncompahgre, and Gunnison National Forests, began a study in 2000 to develop selected streamflow characteristics for 60 streamflow-gaging stations in and near the Grand Mesa, Uncompahgre, and Gunnison National Forests. The study area is located in southwestern Colorado within the...

Kuhn, Gerhard
Streamflow characteristics for selected stations in and near the Grand Mesa, Uncompahgre, and Gunnison National Forests, southwestern Colorado; 2002; OFR; 2002-471; Kuhn, Gerhard

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Year Published: 2002

Data-quality measures for stakeholder-implemented watershed-monitoring programs

Community-based watershed groups, many of which collect environmental data, have steadily increased in number over the last decade. The data generated by these programs are often underutilized due to uncertainty in the quality of data produced. The incorporation of data-quality measures into stakeholder monitoring programs lends statistical...

Greve, Adrienne I.
Data-quality measures for stakeholder-implemented watershed-monitoring programs; 2002; OFR; 2002-141; Greve, Adrienne I.

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Year Published: 2002

Bed-material entrainment potential, Roaring Fork River at Basalt, Colorado

The Roaring Fork River at Basalt, Colorado, has a frequently mobile streambed composed of gravel, cobbles, and boulders. Recent urban and highway development on the flood plain, earlier attempts to realign and confine the channel, and flow obstructions such as bridge openings and piers have altered the hydrology, hydraulics, sediment transport,...

Elliott, John G.
Bed-material entrainment potential, Roaring Fork River at Basalt, Colorado; 2002; WRI; 2002-4223; Elliott, John G.

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Year Published: 2002

Comparison of snowpack and winter wet-deposition chemistry in the Rocky Mountains, USA: Implications for winter dry deposition

Depth-integrated snowpack chemistry was measured just prior to maximum snowpack depth during the winters of 1992-1999 at 12 sites co-located with National Atmospheric Deposition Program/National Trend Network (NADP/NTN) sites in the central and southern Rocky Mountains, USA. Winter volume-weighted mean wet-deposition concentrations were calculated...

Clow, David W.; Ingersoll, George P.; Mast, Alisa; Turk, John T.; Campbell, Donald H.
Comparison of snowpack and winter wet-deposition chemistry in the Rocky Mountains, USA: Implications for winter dry deposition; 2002; Article; Journal; Atmospheric Environment; Clow, D. W.; Ingersoll, G. P.; Mast, M. A.; Turk, J. T.; Campbell, D. H.

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Year Published: 2002

Evaluating remedial alternatives for an acid mine drainage stream: Application of a reactive transport model

A reactive transport model based on one-dimensional transport and equilibrium chemistry is applied to synoptic data from an acid mine drainage stream. Model inputs include streamflow estimates based on tracer dilution, inflow chemistry based on synoptic sampling, and equilibrium constants describing acid/base, complexation, precipitation/...

Runkel, R.L.; Kimball, B. A.
Evaluating remedial alternatives for an acid mine drainage stream: Application of a reactive transport model; 2002; Article; Journal; Environmental Science and Technology; Runkel, R. L.; Kimball, B. A.

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Year Published: 2002

Factors influencing the distribution of Myxobolus cerebralis, the causative agent of whirling disease, in the Cache la Poudre River, Colorado

Oligochaetes, triactinomyxons (TAMs), and age-0 trout were sampled in the upper Cache la Poudre River, Colorado, to determine the distribution of Myxobolus cerebralis during 1997 and 1998. Densities of the intermediate host, the oligochaete Tubifex tubifex, were 3.5 orders of magnitude higher in the M. cerebralis-infected...

Allen, M. Brady; Bergersen, Eric P.

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Year Published: 2002

Characterization and analysis of temporal and spatial variations in habitat and macroinvertebrate community structure, Fountain Creek basin, Colorado Springs and vicinity, Colorado, 1998-2001

The Fountain Creek Basin in and around Colorado Springs, Colorado, is affected by various land- and water-use activities. Biological, hydrological, water-quality, and land-use data were collected at 10 sites in the Fountain Creek Basin from April 1998 through April 2001 to provide a baseline characterization of macroinvertebrate communities and...

Bruce, James F.
Characterization and analysis of temporal and spatial variations in habitat and macroinvertebrate community structure, Fountain Creek basin, Colorado Springs and vicinity, Colorado, 1998-2001; 2002; WRI; 2002-4093; Bruce, James F.

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Year Published: 2002

Characterization of selenium in the lower Gunnison River basin, Colorado, 1988-2000

Selenium concentrations in certain water bodies in the lower Gunnison River Basin, including the lower Gunnison River and lower Uncompahgre River, have exceeded the Colorado water-quality standard of 5 micrograms per liter for selenium. A task force was formed in 1998 that consists of various government agencies, private irrigation companies, and...

Butler, David L.; Leib, Kenneth J.
Characterization of selenium in the lower Gunnison River basin, Colorado, 1988-2000; 2002; WRI; 2002-4151; Butler, David L.; Leib, Kenneth J.