Katie Walton-Day
Katie is a Research Hydrologist with the USGS Colorado Water Science Center.
Katie is a research hydrologist and has worked at the U.S. Geological Survey located in Denver, Colorado for over 35 years. During this time her research has primarily focused on understanding the sources and mobility of trace metals associated with hard rock and uranium mineral deposits primarily in the western United States. A primary goal of her research is to provide science-based information to facilitate decisions about remediation in areas contaminated by historic mining practices. Recently she has begun developing communication products to broaden the audience for USGS scientific studies related to the environmental effects of uranium mining in the Grand Canyon region. Finally, her research has expanded into understanding the effects of harmful algal blooms in Colorado Reservoirs.
Professional Experience
1981-1983 – Exploration Geochemist, Anaconda Minerals Company
1983-1991 – Physical Scientist, U.S. Geological Survey
1991-1996 – Hydrologist, U.S. Geological Survey
1996-Present – Research Hydrologist, U.S. Geological Survey
Education and Certifications
PhD. Geology Colorado School of Mines, 1991
MS Geology Colorado School of Mines, 1985
BA Geology Smith College, 1981
Science and Products
Assessment of metal loads in watersheds affected by acid mine drainage by using tracer injection and synoptic sampling: Cement Creek, Colorado, USA
Effects of acidic recharge on groundwater at the St. Kevin Gulch site, Leadville, Colorado
Effects of fluvial tailings deposits on soils and surface- and ground-water quality, and implications for remediation — Upper Arkansas River, Colorado, 1992–96
U.S. Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Charleston, South Carolina, March 8-12, 1999: Volume 1 (Part A)
The interaction of natural organic matter with iron in a wetland (Tennessee Park, Colorado) receiving acid mine drainage
Geochemistry of the processes that attenuate acid mine drainage in wetlands
Physical and chemical characteristics of Terrace Reservoir, Conejos County, Colorado, May 1994 through May 1995; interim report
Physical and chemical characteristics of Terrace Reservoir, Conejos County, Colorado, May 1994 through May 1995
National water summary on wetland resources
US Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993
Geochemistry of sediments from coastal marshes of Louisiana
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
- Science
- Data
- Multimedia
- Publications
Filter Total Items: 65
Assessment of metal loads in watersheds affected by acid mine drainage by using tracer injection and synoptic sampling: Cement Creek, Colorado, USA
Watersheds in mineralized zones may contain many mines, each of which can contribute to acidity and the metal load of a stream. In this study the authors delineate hydrogeologic characteristics determining the transport of metals from the watershed to the stream in the watershed of Cement Creek, Colorado. Combining the injection of a chemical tracer, to determine a discharge, with synoptic samplinAuthorsB. A. Kimball, R.L. Runkel, K. Walton-Day, K.E. BencalaEffects of acidic recharge on groundwater at the St. Kevin Gulch site, Leadville, Colorado
The acid rock drainage-affected stream of St. Kevin Gulch recharges the Quaternary sand and gravel aquifer of Tennessee Park, near Leadville, Colorado, lowering pH and contributing iron, cadmium, copper, zinc and sulphate to the ground-water system. Dissolved metal mobility is controlled by the seasonal spring runoff as well as oxidation/reduction (redox) reactions in the aquifer. Oxidizing conditAuthorsS.S. Paschke, W.J. Harrison, K. Walton-DayEffects of fluvial tailings deposits on soils and surface- and ground-water quality, and implications for remediation — Upper Arkansas River, Colorado, 1992–96
No abstract available.AuthorsKatherine Walton-Day, F. J. Rossi, L. J. Gerner, J. B. Evans, T. J. Yager, J. F. Ranville, K. S. SmithU.S. Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Charleston, South Carolina, March 8-12, 1999: Volume 1 (Part A)
This report contains papers presented at the seventh Technical Meeting of the U.S. Geological Survey (USGS), Toxic Substances Hydrology (Toxics) Program. The meeting was held March 8-12, 1999, in Charleston, South Carolina. Toxics Program Technical Meetings are held periodically to provide a forum for presentation and discussion of results of recent research activities.The objectives of these meetThe interaction of natural organic matter with iron in a wetland (Tennessee Park, Colorado) receiving acid mine drainage
Pore water from a wetland receiving acid mine drainage was studied for its iron and natural organic matter (NOM) geochemistry on three different sampling dates during summer 1994. Samples were obtained using a new sampling technique that is based on screened pipes of varying length (several centimeters), into which dialysis vessels can be placed and that can be screwed together to allow for verticAuthorsStefan Peiffer, Katherine Walton-Day, Donald L. MacaladyGeochemistry of the processes that attenuate acid mine drainage in wetlands
Because conventional treatment of acid-mine drainage (AMD) involves installation and maintenance of water treatment plants, regulators and mine operators have sought lower cost and lower maintenance technologies. One ecological engineering technology that has received increasing research attention is the use of natural and constructed wetlands for remediation of some of the water-quality problemsAuthorsKatherine Walton-DayPhysical and chemical characteristics of Terrace Reservoir, Conejos County, Colorado, May 1994 through May 1995; interim report
Terrace Reservoir receives drainage of low-pH, metal-enriched water from mineralized areas, including the Summitville Mine, within the AlamosaRiver Basin. Drainage from the Summitville Mine has contributed a substantial part of the metal load to Terrace Reservoir. From May 1994 through May 1995, a study was done by the U.S. Geological Survey, in cooperation with the U.S. Environmental ProtecAuthorsRobert W. Stogner, Sr., Patrick Edelmann, Katherine Walton-DayPhysical and chemical characteristics of Terrace Reservoir, Conejos County, Colorado, May 1994 through May 1995
Terrace Reservoir receives drainage of low-pH, metal-enriched water from mineralized areas, including the Summitville Mine, within the AlamosaRiver Basin. Drainage from the Summitville Mine has contributed a substantial part of the metal load to Terrace Reservoir. From May 1994 through May 1995, a study was done by the U.S. Geological Survey, in cooperation with the U.S. Environmental ProtecAuthorsRobert W. Stogner, Sr., Patrick Edelmann, Katherine Walton-DayNational water summary on wetland resources
This National Water Summary on Wetland Resources documents wetland resources in the United States. It presents an overview of the status of knowledge of wetlands at the present time-what they are, where they are found, why they are important, and the controversies surrounding them, with an emphasis on their hydrology. Wetland resources in each State, the District of Columbia (combined with MarylanUS Geological Survey Toxic Substances Hydrology Program: Proceedings of the technical meeting, Colorado Springs, Colorado, September 20-24, 1993
No abstract available.AuthorsD.W. Morganwalp, D. A. AronsonGeochemistry of sediments from coastal marshes of Louisiana
As a part of the U.S. Geological Survey Global Change and Climate History Program we have been studying the biogeochemistry of coastal marshes in Terrebonne Basin, Louisiana. Louisiana has about 40 percent of the coastal wetlands in the conterminous U.S. and it is losing wetlands at one of the highest rates in the U.S. with the conversion of about 65 km2/yr of marsh to open water (Britsch and DunbAuthorsL. L. Jackson, Laurie S. Balistrieri, K. S. Smith, Katherine Walton-Day, D.L. Kirshcenman, P.S. Briggs, D. L. Fey, S. J. SutleyNon-USGS Publications**
Day, K.W., 1986, Determination of processes controlling vertical trace element distribution in Filson Creek bog, Lake County, Minnesota: Golden, Colorado School of Mines, M.S. thesis # 3149, 236 p.Walton-Day, Katherine, 1991, Hydrology and geochemistry of a natural wetland affected by acid mine drainage, St. Kevin Gulch, Lake County, Colorado: Golden, Colorado School of Mines, Ph.D. dissertation # 4033, 299 p.**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
- Web Tools
- News