2008 |
![Scientific Investigations Report 2008-5086 Scientific Investigations Report 2008-5086](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20085086.jpg) |
![Scientific Investigations Report 2008-5134 Scientific Investigations Report 2008-5134](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20085134.jpg) |
![Data Series 331 Data Series 331](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/DS331.jpg) Data Series 331Comparison of Water Years 2004-05 and Historical Water-Quality Data, Upper Gunnison River Basin, Colorado By Norman E. Spahr, David M. Hartle, and Paul Diaz |
![Scientific Investigations Report 2007-5236 Scientific Investigations Report 2007-5236](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20075236.jpg) Scientific Investigations Report 2007-5236Evaluation of the Acoustic Doppler Velocity Meter for Computation of Discharge Records at Three Sites in Colorado, 2004-2005 By Michael R. Stevens, Paul Diaz, and Dennis E. Smits |
![Scientific Investigations Map 3009 Scientific Investigations Map 3009](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIM3009.jpg) Scientific Investigations Map 3009Estimated Probability of Post-Wildfire Debris-Flow Occurrence and Estimated Volume of Debris Flows from a Pre-Fire Analysis in the Three Lakes Watershed, Grand County, Colorado By Michael R. Stevens, Clifford R. Bossong, David W. Litke, Roland J. Viger, Michael G. Rupert, and Stephen J. Char |
![Scientific Investigations Report 2008-5111 Scientific Investigations Report 2008-5111](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20085111.jpg) Scientific Investigations Report 2008-5111Temporal and Spatial Variations in Precipitation, Streamflow, Suspended-Sediment Loads and Yields, and Land-Condition Trend Analysis at the U.S. Army Piñon Canyon Maneuver Site, Las Animas County, Colorado, 1983 through 2007 By M.R. Stevens, J.A. Dupree, and J.M. Kuzmiak |
![Scientific Investigations Report 2008-5056 Scientific Investigations Report 2008-5056](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20085056.jpg) Scientific Investigations Report 2008-5056Simulation of Hydrodynamics and Water Quality in Pueblo Reservoir, Southeastern Colorado, for 1985 through 1987 and 1999 through 2002 By Joel M. Galloway, Roderick F. Ortiz, Jerad D. Bales, and David P. Mau |
![Scientific Investigations Report 2008-5079 Scientific Investigations Report 2008-5079](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20085079.jpg) Scientific Investigations Report 2008-5079Comparisons of Simulated Hydrodynamics and Water Quality for Projected Demands in 2046, Pueblo Reservoir, Southeastern Colorado By Roderick F. Ortiz, Joel M. Galloway, Lisa D. Miller, and David P. Mau |
![Open-File Report 2008-1172 Open-File Report 2008–1172](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR20081172.jpg) Open-File Report 2008-1172Analytical Results for Municipal Biosolids Samples from a Monitoring Program Near Deer Trail, Colorado (USA), 1999 through 2006 By J. G. Crock, D. B. Smith, T. J. B. Yager, Z. A. Brown, and M.G. Adams |
![Scientific Investigations Report 2008-5036 Scientific Investigations Report 2008-5036](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20085036.jpg) |
![Scientific Investigations Report 2008-5020 Scientific Investigations Report 2008-5020](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20085020.jpg) Scientific Investigations Report 2008-5020Availability, Sustainability, and Suitability of Ground Water, Rogers Mesa, Delta County, Colorado—Types of Analyses and Data for Use in Subdivision Water-Supply Reports By Kenneth R. Watts |
![Open-File Report 2007-1002G Open-File Report 2007-1002G](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR20071002G.jpg) Open-File Report 2007-1002GRainfall-Runoff and Erosion Data from the Mancos Shale Formation in the Gunnison Gorge National Conservation Area, Southwestern Colorado, 2003-2006 By John G. Elliott, James R. Herring, George P. Ingersoll, John J. Kosovich, and Juli Fahy |
![Scientific Investigations Report 2008-5016 Scientific Investigations Report 2008-5016](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20085016.jpg) Scientific Investigations Report 2008-5016Occurrence of Chlorothalonil, Its Transformation Products, and Selected Other Pesticides in Texas and Oklahoma Streams, 2003-2004 By William A. Battaglin, Kathryn Kuivila, Kim Winton, and Michael Meyer |
![Data Series 305 Data Series 305](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/DS305.jpg) Data Series 305Water-Quality Data Collected from Vallecito Reservoir, Its Inflows and Outflow, Southwestern Colorado, 1999-2002 By Anthony J. Ranalli |
2007 |
![Professional Paper 1737-A Professional Paper 1737-A](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/PP1737A.jpg) Professional Paper 1737-AHydrogeologic Settings and Ground-Water Flow Simulations for Regional Studies of the Transport of Anthropogenic and Natural Contaminants to Public-Supply Wells Studies Begun in 2001 Edited by Suzanne S. Paschke |
![Fact Sheet 2007-3036 Fact Sheet 2007-3036](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS20073036.jpg) Fact Sheet 2007-3036Post-wildfire hydrologic hazards in the wildland urban interface of Colorado and the Western United States By M.R. Stevens, C.R. Bossong, M.G. Rupert, A.J. Ranalli, E.W. Cassidy, and A.D. Druliner |
![Scientific Investigations Report 07-5288 Scientific Investigations Report 07-5288](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20075288.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20075287.jpg) Scientific Investigations Report 07-5287Analysis of Dissolved Selenium Loading for Selected Sites in the Lower Gunnison River Basin, Colorado, 1978 2005 By Judith C. Thomas, Kenneth J. Leib, and John W. Mayo |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20075225.jpg) Scientific Investigations Report 07-5225Urban-related environmental variables and their relation with patterns in biological community structure in the Fountain Creek Basin, Colorado, 2003-2005 By Robert E. Zuellig, James F. Bruce, Erin E. Evans, and Robert W. Stogner |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20075220.jpg) Scientific Investigations Report 07-5220Ground-Water Quality and Potential Effects of Individual Sewage Disposal System Effluent on Ground-Water Quality in Park County, Colorado, 2001-2004 By Lisa D. Miller and Roderick F. Ortiz |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20075147.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20075104.jpg) Scientific Investigations Report 07-5104Characterization of Stormflows and Wastewater Treatment-Plant Effluent Discharges on Water Quality, Suspended Sediment, and Stream Morphology for Fountain and Monument Creek Watersheds, Colorado, 1981 2006 By David P. Mau, Robert W. Stogner, Sr., and Patrick Edelmann |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20075083.jpg) Scientific Investigations Report 07-5083Response of Stream Chemistry During Base Flow to Gradients of Urbanization in Selected Locations Across the Conterminous United States, 2002 04 By Lori A. Sprague, Douglas A. Harned, David W. Hall, Lisa H. Nowell, Nancy J. Bauch, and Kevin D. Richards |
![Scientific Investigations Report 2007-5028 Scientific Investigations Report 2007-5028](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20075028.jpg) Scientific Investigations Report 07-5028Description and User Manual for a Web-Based Interface to a Transit-Loss Accounting Program for Monument and Fountain Creeks, El Paso and Pueblo Counties, Colorado By Gerhard Kuhn, Gary S. Krammes, and Vivian J. Beal |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20075019.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20075018.jpg) Scientific Investigations Report 07-5018Selenium and other elements in water and adjacent rock and sediment of Toll Gate Creek, Aurora, Arapahoe County, Colorado, December 2003 through March 2004 By J.R. Herring and Katherine Walton-Day |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/DS253.jpg) Data Series 253Aquatic Communities and Selected Water Chemistry in St. Vrain Creek near the City of Longmont, Colorado,Wastewater-Treatment Plant, 2005 and 2006 By Robert E. Zuellig, Lori A Sprague, Jim A. Collins, and Oliver N. Cox |
![Open-File Report 2007-1002D Open-File Report 2007-1002D](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR20071002D.jpg) Open-File Report 2007-1002DResults of Chemical Analyses of Soil, Shale, and Soil/Shale Extract from the Mancos Shale Formation in the Gunnison Gorge National Conservation Area, Southwestern Colorado, and at Hanksville, Utah By Michele L.W. Tuttle, Juli Fahy, Richard I. Grauch, Bridget A. Ball, Geneva W. Chong, John G. Elliott, John J. Kosovich, Keith E. Livo, and Lisa L. Stillings |
2006 |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20065322.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20065315.jpg) Scientific Investigations Report 06-5315Dissolved Solids in Basin-Fill Aquifers and Streams in the Southwestern United States By David W. Anning, Nancy J. Bauch, Steven J. Gerner, Marilyn E. Flynn, Scott N. Hamlin, Stephanie J. Moore, Donald H. Schaefer, Scott K. Anderholm, and Lawrence E. Spangler |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20065265.jpg) Scientific Investigations Report 06-5265Sedimentation in Goose Pasture Tarn, 1965-2005, Breckenridge, Colorado By John G. Elliott, Stephen J. Char, Samuel M. Linhart, V. Cory Stephens, and Gregory B. O'Neill |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20065231.jpg) Scientific Investigations Report 06-5231Nutrient and Suspended-Sediment Trends in the Missouri River Basin, 1993-2003 By Lori A. Sprague, Melanie L. Clark, David L. Rus, Ronald B. Zelt, Jennifer L. Flynn, and Jerri V. Davis |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20065184.jpg) Scientific Investigations Report 06-5184Application of a stream-aquifer model to Monument Creek for Development of a method to estimate transit losses for reusable water, El Paso County, Colorado By Gerhard Kuhn and Rick Arnold |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20065164.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20065129.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/default.jpg) Scientific Investigations Report 06-5119Organochlorine Compounds and Current-Use Pesticides in Snow and Lake Sediment in Rocky Mountain National Park, Colorado, and Glacier National Park, Montana, 2002 03 By M. Alisa Mast, William T. Foreman, and Serena V. Skaates |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20065109.jpg) Scientific Investigations Report 06-5109A Preliminary Evaluation of Vertical Separation between Production Intervals of Coalbed-Methane Wells and Water-Supply Wells in the Raton Basin, Huerfano and Las Animas Counties, Colorado, 1999-2004 By Kenneth R. Watts |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/default.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20065050.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20065012.jpg) Scientific Investigations Report 06-5012County-Level Estimates of Nutrient Inputs to the Land Surface of the Conterminous United States, 1982-2001 By Barbara C. Ruddy, David L. Lorenz, and David K. Mueller |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS20063083.jpg) Fact Sheet 2006-3083Effects of Urban Development on Stream Ecosystems along the Front Range of the Rocky Mountains, Colorado and Wyoming By Lori A. Sprague, Robert E. Zuellig, and Jean A. Dupree |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/default.jpg) Data Series 183An Annotated List of the Mayflies, Stoneflies, and Caddisflies of the Sand Creek Basin, Great Sand Dunes National Park and Preserve, Colorado, 2004 and 2005 By Robert E. Zuellig, Boris C. Kondratieff, David E. Ruiter, and Richard A. Thorp |
2005 |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20055236.jpg) Scientific Investigations Report 05-5236Proceedings of the U.S. Geological Survey Fifth Biennial Geographic Information Science Workshop: March 1 5, 2004, Denver, Colorado By Stephen J. Char and Jennifer B. Sieverling, Editors |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20055214.jpg) Scientific Investigations Report 05-5214Surface Water-Quality and Water-Quantity Data from Selected Urban Runoff-Monitoring Sites at the Rocky Mountain Arsenal, Commerce City, Colorado, Water Years 1988 2004 By John D. Gordon, Donald E. Schild, Joseph P. Capesius, and Cecil B. Slaughter |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20055179.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20055174.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20055167.jpg) Scientific Investigations Report 05-5167Effects of Emission Reductions at the Hayden Powerplant on Precipitation, Snowpack, and Surface-Water Chemistry in the Mount Zirkel Wilderness Area, Colorado, 1995-2003 By M. Alisa Mast, Donald H. Campbell, and George P. Ingersoll |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20055151.jpg) Scientific Investigations Report 05-5151Mass Loading of Selected Major and Trace Elements in Lake Fork Creek near Leadville, Colorado, September-October 2001 By Katherine Walton-Day, Jennifer L. Flynn, Briant A. Kimball, and Robert L. Runkel |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/default.jpg) Scientific Investigations Report 05-5150Summary and Evaluation of the Quality of Stormwater in Denver, Colorado, Water Years 1998-2001 By Clifford R. Bossong, Michael R. Stevens, John T. Doerfer, and Ben R. Glass |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20055117.jpg) Scientific Investigations Report 05-5117Proceedings of the U.S. Geological Survey Fourth Biennial Geographic Information Science Workshop: Denver, Colorado, April 23-27, 2001 By Jennifer B. Sieverling, Stephen J. Char, and Carma A. San Juan |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20055106.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20055101.jpg) Scientific Investigations Report 05-5101Geochemistry of Red Mountain Creek, Colorado, Under Low-Flow Conditions, August 2002 By Robert L. Runkel, Briant A. Kimball, Katherine Walton-Day, and Philip L. Verplanck |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20055063.jpg) Scientific Investigations Report 05-5063Variability of Differences between Two Approaches for Determining Ground-Water Discharge and Pumpage, Including Effects of Time Trends, Lower Arkansas River Basin, Southeastern Colorado, 1998-2002 By Brent M. Troutman, Patrick Edelmann, and Russell G. Dash |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20055054.jpg) Scientific Investigations Report 05-5054Quantification and Simulation of Metal Loading to the Upper Animas River, Eureka to Silverton, San Juan County, Colorado, September 1997 and August 1998 By Suzanne S. Paschke, Briant A. Kimball, and Robert L. Runkel |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20055023.jpg) Scientific Investigations Report 05-5023Sensitivity of Alpine and Subalpine Lakes to Acidification from Atmospheric Deposition in Grand Teton National Park and Yellowstone National Park, Wyoming By Leora Nanus, Donald H. Campbell, and Mark W. Williams |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20055018.jpg) Scientific Investigations Report 05-5018Using Tracers to Evaluate Streamflow Gain-Loss Characteristics of Terror Creek, in the Vicinity of a Mine-Permit Area, Delta County, Colorado, Water Year 2003 By Cory A. Williams and Kenneth J. Leib |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS20053143.jpg) Fact Sheet 2005-3143Sustainability of Ground-Water Resources in the Upper Arkansas River Basin between Buena Vista and Salida, Colorado, 2000 2003 By K.R. Watts |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS20053037.jpg) Fact Sheet 2005-3037The Cache la Poudre River, Colorado, as a Drinking-Water Source By Jim A. Collins and Lori A. Sprague |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS20053031.jpg) Fact Sheet 2005-3031Simulated Effects of the Proposed Sulphur Gulch Reservoir Operations on Colorado River Quantity and Quality By M.J. Friedel |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR20051332.jpg) Open-File Report 2005-1332Rocky Mountain Snowpack Chemistry at Selected Sites, 2003 By George P. Ingersoll, M. Alisa Mast, Leora Nanus, David J. Manthorne, Heather H. Handran, Douglas M. Hulstrand, and Jesse Winterringer |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/default.jpg) Data Series 152Water-quality, streamflow, and ancillary data for nutrients in streams and rivers across the Nation, 1992-2001 By D.K. Mueller and N.E. Spahr |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/TM4A5.jpg) |
2004 |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20045300.jpg) Scientific Investigations Report 04-5300Analysis and Mapping of Post-Fire Hydrologic Hazards for the 2002 Hayman, Coal Seam, and Missionary Ridge Wildfires, Colorado By J.G. Elliott, M.E. Smith, M.J. Friedel, M.R. Stevens, C.R. Bossong, D.W. Litke, R.S. Parker, C. Costello, J. Wagner, S.J. Char, M.A. Bauer, and S.R. Wilds |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20045290.jpg) Scientific Investigations Report 04-5290Distribution and Mass of Nitrate in the Unconfined Aquifer Beneath the Intensively Cultivated Area North of the Rio Grande, San Luis Valley, Colorado, 1997 through 2001 By Robert W. Stogner, Sr |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20045281.jpg) Scientific Investigations Report 04-5281Characterization of Water Quality in Government Highline Canal at Camp 7 Diversion and Highline Lake, Mesa County, Colorado, July 2000 through September 2003 By Roderick F. Ortiz |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/default.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/default.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20045289.jpg) Scientific Investigations Report 04-5289Effects of Surface Applications of Biosolids on Soil, Crops, Ground Water, and Streambed Sediment near Deer Trail, Colorado, 1999-2003 By Tracy J.B. Yager, David B. Smith, and James G. Crock |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/SIR20045164.jpg) Scientific Investigations Report 04-5164Using the Tracer-Dilution Discharge Method to Develop Streamflow Records for Ice-Affected Streams in Colorado By Joseph P. Capesius, Joseph R. Sullivan, Gregory B. O'Neill, and Cory A. Williams |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/default.jpg) Scientific Investigations Report 04-5095Evaluation of Streamflow Losses Along the Gunnison River from Whitewater Downstream to the Redlands Canal Diversion Dam, near Grand Junction, Colorado, Water Years 1995-2003 By Gerhard Kuhn and Cory A. Williams |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/default.jpg) Scientific Investigations Report 04-5024Methods to Identify Changes in Background Water-Quality Conditions Using Dissolved-Solids Concentrations and Loads as Indicators, Arkansas River and Fountain Creek, in the Vicinity of Pueblo, Colorado By Roderick F. Ortiz |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS20043127.jpg) Fact Sheet 2004-3127Wastewater Chemicals in Colorado's Streams and Ground Water By Lori A. Sprague and William A. Battaglin |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS20043097.jpg) Fact Sheet 2004-3097Water-Level Changes in the High Plains Aquifer, Predevelopment to 2003 and 2002 to 2003 By V.L. McGuire |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS20043066.jpg) Fact Sheet 2004-3066Ground-Water Quality of Granitic- and Volcanic-Rock Aquifers in Southeastern Park County, Colorado, July-August 2003 By Roderick F. Ortiz |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS20043065.jpg) Fact Sheet 2004-3065Ground-Water Quality of Alluvial and Sedimentary-Rock Aquifers in the Vicinity of Fairplay and Alma, Park County, Colorado, September-October 2002 By Roderick F. Ortiz |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS20043051.jpg) Fact Sheet 2004-3051Ground-Water Age and Flow at Great Sand Dunes National Monument, South-Central Colorado By Michael G. Rupert and L. Niel Plummer |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS20043009.jpg) Fact Sheet 2004-3009Potential Effects of Individual Sewage Disposal System Density on Ground-Water Quality in the Fractured-Rock Aquifer in the Vicinity of Bailey, Park County, Colorado, 2001-2002 By Daniel L. Brendle |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR20041404.jpg) Open-File Report 2004-1404Biosolids, Soil, Crop, Ground-Water, and Streambed-Sediment Data for a Biosolids-Application Area Near Deer Trail, Colorado, 2002-2003 By Tracy J.B. Yager, David B. Smith, and James G. Crock |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR20041388.jpg) Open-File Report 2004-1388Biosolids, Soil, Crop, Ground-Water, and Streambed-Sediment Data for a Biosolids-Application Area Near Deer Trail, Colorado, 2001 By Tracy J.B. Yager, David B. Smith, and James G. Crock |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR20041027.jpg) |
2003 |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20034275.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20034241.jpg) Water-Resources Investigations Report 03-4241Atmospheric Deposition of Nutrients, Pesticides, and Mercury in Rocky Mountain National Park, Colorado, 2002 By M. Alisa Mast, Donald H. Campbell, George P. Ingersoll, William T. Foreman, and David P. Krabbenhoft |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20034220.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20034219.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20034209.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20034172.jpg) Water-Resources Investigations Report 03-4172Application of Tracer-Injection Techniques to Demonstrate Surface-Water and Ground-Water Interactions Between an Alpine Stream and the North Star Mine, Upper Animas River Watershed, Southwestern Colorado By Winfield G. Wright and Bryan Moore |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20034171.jpg) Water-Resources Investigations Report 03-4171Water Movement Through Thick Unsaturated Zones Overlying the Central High Plains Aquifer, Southwestern Kansas, 2000 2001 By P.B. McMahon, K.F. Dennehy, R.L. Michel, M.A. Sophocleous, K.M. Ellett, and D.B. Hurlbut |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20034087.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20034073.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20034044.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20034034.jpg) Water-Resources Investigations Report 03-4034Hydrologic Conditions and Assessment of Water Resources in the Turkey Creek Watershed, Jefferson County, Colorado, 1998-2001 By Clifford R. Bossong, Jonathan Saul Caine, David I. Stannard, Jennifer L. Flynn, Michael R. Stevens, and Janet S. Heiny-Dash |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR2003500.jpg) Open-File Report 03-500Using Logistic Regression To Predict the Probability of Debris Flows Occurring in Areas Recently Burned By Wildland Fires By Michael G. Rupert, Susan H. Cannon, and Joseph E. Gartner |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR2003400.jpg) Open-File Report 03-400Biosolids, Soil, Crop, Ground-Water, and Streambed-Sediment Data for a Biosolids-Application Area Near Deer Trail, Colorado, 2000 By Tracy J.B. Yager, David B. Smith, James G. Crock, and Michael R. Stevens |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR2003069.jpg) Open-File Report 03-069Work Plan for Determining the Occurrence of Glyphosate, Its Transformation Product AMPA, Other Herbicide Compounds, and Antibiotics in Midwestern United States Streams, 2002 By W.A. Battaglin, E.M. Thurman, D.W. Kolpin, E.A. Scribner, M.W. Sandstrom, and K.M. Kuivila |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR2003048.jpg) Open-File Report 03-048Rocky Mountain Snowpack Chemistry at Selected Sites for 2001 By George P. Ingersoll, M. Alisa Mast, David W. Clow, Leora Nanus, Donald H. Campbell, and Heather Handran |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/DS109.jpg) Data Series 109Streamwater Quality Data from the 2002 Hayman, Hinman, and Missionary Ridge Wildfires, Colorado, 2003 By Anthony J. Ranalli and Michael R. Stevens |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/DS101.jpg) Data Series 101Comparison of 2002 Water Year and Historical Water-Quality Data, Upper Gunnison River Basin, Colorado By N.E. Spahr |
2002 |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024275.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024270.jpg) Water-Resources Investigations Report 02-4270Changes in Nutrient and Pesticide Concentrations in Urban and Agricultural Areas of the South Platte River Basin, Colorado, Wyoming, and Nebraska, 1994 2000 By Lori A. Sprague and Adrienne I. Greve |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024269.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024247.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024236.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024230.jpg) Water-Resources Investigations Report 02-4230Using Water-Quality Profiles to Characterize Seasonal Water Quality and Loading in the Upper Animas River Basin, Southwestern Colorado By Kenneth J. Leib, M. Alisa Mast, and Winfield G. Wright |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024223.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024199.jpg) Water-Resources Investigations Report 02-4199Limnology of Blue Mesa, Morrow Point, and Crystal Reservoirs, Curecanti National Recreation Area, during 1999, and a 25-Year Retrospective of Nutrient Conditions in Blue Mesa Reservoir, Colorado By Nancy J. Bauch, U.S. Geological Survey, and Matt Malick, National Park Service |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024196.jpg) Water-Resources Investigations Report 02-4196Investigation of Water Quality in the Great Sand Dunes National Monument and Preserve, Saguache County, Colorado, February 1999 through September 2000: Qualifying for Outstanding Waters Designation By Sheryl A. Ferguson |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024151.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024142.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024139.jpg) Water-Resources Investigations Report 02-4139Relations of Benthic Macroinvertebrates to Concentrations of Trace Elements in Water, Streambed Sediments, and Transplanted Bryophytes and Stream Habitat Conditions in Nonmining and Mining Areas of the Upper Colorado River Basin, Colorado, 199598 By Scott V. Mize and Jeffrey R. Deacon |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024128.jpg) Water-Resources Investigations Report 02-4128Sources of Metal Loads to the Alamosa River and Estimation of Seasonal and Annual Metal Loads for the Alamosa River Basin, Colorado, 1995 97 By Roderick Ortiz, Patrick Edelmann, Sheryl Ferguson, and Robert Stogner, Sr. |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/default.jpg) Water-Resources Investigations Report 02-4104Evaluation of Water Quality, Suspended Sediment, and Stream Morphology with an Emphasis on Effects of Stormflow on Fountain and Monument Creek Basins, Colorado Springs and Vicinity, Colorado, 1981 through 2001 By Patrick Edelmann, Sheryl A. Ferguson, Robert W. Stogner, Sr., Marianne August, William F. Payne, and James F. Bruce |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024093.jpg) Water-Resources Investigations Report 02-4093Characterization and Analysis of Temporal and Spatial Variations in Habitat and Macroinvertebrate Community Structure, Fountain Creek Basin, Colorado Springs and Vicinity, Colorado, 1998-2001 By James F. Bruce |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024058.jpg) Water-Resources Investigations Report 02-4058Geophysical Logging to Determine Construction, Contributing Zones, and Appropriate Use of Water Levels Measured in Confined-Aquifer Network Wells, San Luis Valley, Colorado, 1998-2000 By Daniel L. Brendle |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024038.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024037.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20024001.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS2002127.jpg) Fact Sheet 127-02Data Summary and Loading Sources for Selected Water-Quality Characteristics of Streams in Blowdown Areas, North Fork Elk River Watershed, Colorado, March 1999 August 2000 By Kenneth J. Leib and Paul von Guerard |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS2002044.jpg) Fact Sheet 044-02What happens to nutrients in offstream reservoirs in the lower South Platte River Basin? By L.A. Sprague, R.A. Kimbrough, and A.J. Ranalli |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR2002471.jpg) Open-File Report 02-471Streamflow Characteristics for Selected Stations In and Near the Grand Mesa, Uncompahgre, and Gunnison National Forests, Southwestern Colorado By Gerhard Kuhn |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR2002364.jpg) Open-File Report 02-364Analysis of Geophysical Logs from Six Boreholes at Lariat Gulch, Former U.S. Air Force Site PJKS, Jefferson County, Colorado By Frederick L. Paillet, Richard E. Hodges, and Barbara S. Corland |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR2002141.jpg) Open-File Report 02-141Data-Quality Measures of Stakeholder-Implemented Watershed-Monitoring Programs By Adrienne I. Greve |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR2002051.jpg) Open-File Report 02-051Biosolids, Soils, Ground-Water, and Streambed-Sediment Data for a Biosolids-Application Area near Deer Trail, Colorado, 1999 By Michael R. Stevens, Tracy J.B. Yager, David B. Smith, and James G. Crock |
2001 |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20014204.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20014190.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20014167.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20014034.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20014028.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20014027.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/default.jpg) Open-File Report 01-466Rocky Mountain Snowpack Chemistry Network: History, Methods, and the Importance of Monitoring Mountain Ecosystems By George P. Ingersoll, John T. Turk, M. Alisa Mast, David W. Clow, Donald H. Campbell, and Zelda C. Bailey |
2000 |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20004263.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20004254.jpg) Water-Resources Investigations Report 00-4254Historical Water-Quality Data for the High Plains Regional Ground-Water Study Area in Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming, 1930-98 By David W. Litke |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20004186.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20004170.jpg) Water-Resources Investigations Report 00-4170Characterization of Water Quality in Selected Tributaries of the Alamosa River, Southwestern Colorado, Including Comparisons to Instream Water-Quality Standards and Toxicological Reference Values, 1995-97 By Roderick F. Ortiz and Sheryl A. Ferguson |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20004160.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20004154.jpg) Water-Resources Investigations Report 00-4154Determination of Instream Metal Loads Using Tracer-Injection and Synoptic- Sampling Techniques in Wightman Fork, Southwestern Colorado, September 1997 By Roderick F. Ortiz and Kenneth E. Bencala |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20004130.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20004109.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI20004005.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS2000136.jpg) Fact Sheet 136-00Trends in precipitation and streamflow in the Fountain Creek watershed, southeastern Colorado, 1977-99 By R.W. Stogner |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR2000394.jpg) Open-File Report 00-394Snowpack Chemistry at Selected Sites in Colorado and New Mexico during Winter 1999-2000 By George P. Ingersoll |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR2000266.jpg) Open-File Report 00-266Algal data from selected sites in the Upper Colorado River Basin, Colorado, water years 1996-97 By S.V. Mize and J.R. Deacon |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR2000214.jpg) Open-File Report 00-214Quality of ground water and surface water in an area of individual sewage disposal system use near Barker Reservoir, Nederland, Colorado, August-September 1998 By J.L. Flynn and L.B. Barber |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR2000082.jpg) Open-File Report 00-082Hydrologic, Water-Quality, Sediment Transport, and Bulk Atmospheric-Deposition Data, Guanella Pass Area, Colorado, October 1, 1994, through September 30, 1997 By Michael R. Stevens |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR2000054.jpg) Open-File Report 00-054Evaluation of biological data, Guanella Pass area, Clear Creek and Park Counties, Colorado, water years By J.R. Cox-Lillis |
1999 |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI19994270.jpg) Water-Resources Investigations Report 99-4270Gore Creek Watershed, Colorado-Assessment of Historical and Current Water Quantity, Water Quality, and Aquatic Ecology, 1968-98 By Kirby H. Wynn, Nancy J. Bauch, and Nancy E. Driver |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI19994243.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI19994223.jpg) Water-Resources Investigations Report 99-4223Water quality at basic fixed sites in the Upper Colorado River Basin National Water-Quality Assessment Study Unit, October 1995-September 1998 By N.E. Spahr, R.W. Boulger, and R.J. Szmajter |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI19994221.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI19994190.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI19994181.jpg) Water-Resources Investigations Report 99-4181Characterization of selected biological, chemical, and physical conditions at fixed sites in the Upper Colorado River Basin, Colorado, 1995-98 By J.R. Deacon, S.V. Mize, and N.E. Spahr |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI19994148.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/default.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI19994098.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS1999186.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS1999138.jpg) Fact Sheet 138-99Using OTIS to model solute transport in streams and rivers By R.L. Runkel |
1998 |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI19984236.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI19984124.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI19984018.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR1998279.jpg) Open-File Report 98-279Water-quality characteristics of the Slate and East Rivers, Colorado, during the winter recreational season, December 1996 By N.E. Spahr and J.R. Deacon |
1997 |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/WRI19974227.jpg) |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS1997167.jpg) Fact Sheet 167-97Distribution and concentrations of selected organochlorine pesticides and PCB's in streambed sediment and whole-body fish in the Upper Colorado River Basin, 1995-96 By V.C. Stephens and J.R. Deacon |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS1997166.jpg) Fact Sheet 166-97Relations of main-stem reservoir operations and specific conductance in the lower Arkansas River, southeastern Colorado By M.E. Lewis |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS1997160.jpg) Fact Sheet 160-97Low-flow water-quality characterization of the Gore Creek watershed, Upper Colorado River Basin, Colorado, August 1996 By K.H. Wynn and N.E. Spahr |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS1997122.jpg) Fact Sheet 122-97Effects of water quality and habitat on composition of fish communities in the Upper Colorado River Basin By J.D. Deacon, and S.V. Mize |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS1997043.jpg) Fact Sheet 043-97Are aquatic resources of the Mt. Zirkel Wilderness Area in Colorado affected by acid deposition and what will emissions reductions at the local power plants do? By J.T. Turk and D.H. Campbell |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS1997040.jpg) Fact Sheet 040-97Organochlorine Compounds and Trace Elements in Streambed Sediment and Fish Tissue, South Platte River Basin-Colorado, Nebraska, and Wyoming By Janet S. Heiny |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS1997032.jpg) Fact Sheet 032-97Biological and contaminant investigations, Upper Colorado River Basin-What's been done and how can the information be used? By J.R. Deacon |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS1997004.jpg) Fact Sheet 004-97Variability of nitrate concentrations in the shallow ground water in a selected area of the San Luis Valley, south-central Colorado By R.W. Stogner |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR1997233.jpg) Open-File Report 97-233Nitrogen and phosphorus data for surface water in the Upper Colorado River Basin, 1980-94 By K.H. Wynn and N.E. Spahr |
1996 |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/default.jpg) Water-Resources Investigations Report 96-4172Summary of biological and contaminant Investigations related to stream-water quality and environmental setting in the Upper Colorado River Basin: 1938-1995 By J.R. Deacon and V.C. Stephens |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS1996215.jpg) Fact Sheet 215-96Salinity in the Colorado River in the Grand Valley, western Colorado, 1994-95 By D.L. Butler, and P.B. von Guerard |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS1996191.jpg) Fact Sheet 191-96The Upper Colorado River National Water-Quality Assessment program surface-water-monitoring network By N.E. Spahr, N.E. Driver, and V.C. Stephens |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/FS1996109.jpg) Fact Sheet 109-96What Affects Water Quality In the Upper Colorado River Basin? By Lori E. Apodaca, Verlin C. Stephens, and Nancy E. Driver |
1995 |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR1995450.jpg) Open-File Report 95-450Bibliography, indices, and data sources of water-related studies, Upper Colorado River Basin, Colorado and Utah,1872-1995 By N.J. Bauch and L.E. Apodaca |
1994 |
![](https://webarchive.library.unt.edu/eot2008/20081108081417im_/http://co.water.usgs.gov/publications/images/thumbnails/OFR1994102.jpg) |