Katie Walton-Day (Former Employee)
Science and Products
Filter Total Items: 16
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Filter Total Items: 72
An approach to quantify sources, seasonal change, and biogeochemical processes affecting metal loading in streams: Facilitating decisions for remediation of mine drainage An approach to quantify sources, seasonal change, and biogeochemical processes affecting metal loading in streams: Facilitating decisions for remediation of mine drainage
Historical mining has left complex problems in catchments throughout the world. Land managers are faced with making cost-effective plans to remediate mine influences. Remediation plans are facilitated by spatial mass-loading profiles that indicate the locations of metal mass-loading, seasonal changes, and the extent of biogeochemical processes. Field-scale experiments during both low-...
Authors
B. A. Kimball, R.L. Runkel, K. Walton-Day
Geochemical data for Upper Mineral Creek, Colorado, under existing ambient conditions and during an experimental pH modification, August 2005 Geochemical data for Upper Mineral Creek, Colorado, under existing ambient conditions and during an experimental pH modification, August 2005
Mineral Creek, an acid mine drainage stream in south-western Colorado, was the subject of a water-quality study that employed a paired synoptic approach. Under the paired synoptic approach, two synoptic sampling campaigns were conducted on the same study reach. The initial synoptic campaign, conducted August 22, 2005, documented stream-water quality under existing ambient conditions. A...
Authors
Robert L. Runkel, Briant A. Kimball, Judy I. Steiger, Katherine Walton-Day
The use of fluoride as a natural tracer in water and the relationship to geological features: Examples from the Animas River Watershed, San Juan Mountains, Silverton, Colorado The use of fluoride as a natural tracer in water and the relationship to geological features: Examples from the Animas River Watershed, San Juan Mountains, Silverton, Colorado
Investigations within the Silverton caldera, in southwestern Colorado, used a combination of traditional geological mapping, alteration-assemblage mapping, and aqueous geochemical sampling that showed a relationship between geological and hydrologic features that may be used to better understand the provenance and evolution of the water. Veins containing fluorite, huebnerite, and...
Authors
Dana J. Bove, Katherine Walton-Day, Briant A. Kimball
A comparison of pre- and post-remediation water quality, Mineral Creek, Colorado A comparison of pre- and post-remediation water quality, Mineral Creek, Colorado
Pre- and post-remediation data sets are used herein to assess the effectiveness of remedial measures implemented in the headwaters of the Mineral Creek watershed, where contamination from hard rock mining has led to elevated metal concentrations and acidic pH. Collection of pre- and post-remediation data sets generally followed the synoptic mass balance approach, in which numerous stream...
Authors
R.L. Runkel, K.E. Bencala, B. A. Kimball, K. Walton-Day, P. L. Verplanck
New light on a dark subject: On the use of fluorescence data to deduce redox states of natural organic matter (NOM) New light on a dark subject: On the use of fluorescence data to deduce redox states of natural organic matter (NOM)
This paper reports the use of excitation-emission matrix fluorescence spectroscopy (EEMS), parallel factor statistical analysis (PARAFAC), and oxidation-reduction experiments to examine the effect of redox conditions on PARAFAC model results for aqueous samples rich in natural organic matter. Fifty-four aqueous samples from 11 different geographic locations and two plant extracts were...
Authors
Donald L. Macalady, Katherine Walton-Day
Investigating hydraulic connections and the origin of water in a mine tunnel using stable isotopes and hydrographs Investigating hydraulic connections and the origin of water in a mine tunnel using stable isotopes and hydrographs
Turquoise Lake is a water-supply reservoir located north of the historic Sugarloaf Mining district near Leadville, Colorado, USA. Elevated water levels in the reservoir may increase flow of low-quality water from abandoned mine tunnels in the Sugarloaf District and degrade water quality downstream. The objective of this study was to understand the sources of water to Dinero mine drainage...
Authors
Katherine Walton-Day, Eileen Poeter
Non-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.
Science and Products
Filter Total Items: 16
No Result Found
Filter Total Items: 72
An approach to quantify sources, seasonal change, and biogeochemical processes affecting metal loading in streams: Facilitating decisions for remediation of mine drainage An approach to quantify sources, seasonal change, and biogeochemical processes affecting metal loading in streams: Facilitating decisions for remediation of mine drainage
Historical mining has left complex problems in catchments throughout the world. Land managers are faced with making cost-effective plans to remediate mine influences. Remediation plans are facilitated by spatial mass-loading profiles that indicate the locations of metal mass-loading, seasonal changes, and the extent of biogeochemical processes. Field-scale experiments during both low-...
Authors
B. A. Kimball, R.L. Runkel, K. Walton-Day
Geochemical data for Upper Mineral Creek, Colorado, under existing ambient conditions and during an experimental pH modification, August 2005 Geochemical data for Upper Mineral Creek, Colorado, under existing ambient conditions and during an experimental pH modification, August 2005
Mineral Creek, an acid mine drainage stream in south-western Colorado, was the subject of a water-quality study that employed a paired synoptic approach. Under the paired synoptic approach, two synoptic sampling campaigns were conducted on the same study reach. The initial synoptic campaign, conducted August 22, 2005, documented stream-water quality under existing ambient conditions. A...
Authors
Robert L. Runkel, Briant A. Kimball, Judy I. Steiger, Katherine Walton-Day
The use of fluoride as a natural tracer in water and the relationship to geological features: Examples from the Animas River Watershed, San Juan Mountains, Silverton, Colorado The use of fluoride as a natural tracer in water and the relationship to geological features: Examples from the Animas River Watershed, San Juan Mountains, Silverton, Colorado
Investigations within the Silverton caldera, in southwestern Colorado, used a combination of traditional geological mapping, alteration-assemblage mapping, and aqueous geochemical sampling that showed a relationship between geological and hydrologic features that may be used to better understand the provenance and evolution of the water. Veins containing fluorite, huebnerite, and...
Authors
Dana J. Bove, Katherine Walton-Day, Briant A. Kimball
A comparison of pre- and post-remediation water quality, Mineral Creek, Colorado A comparison of pre- and post-remediation water quality, Mineral Creek, Colorado
Pre- and post-remediation data sets are used herein to assess the effectiveness of remedial measures implemented in the headwaters of the Mineral Creek watershed, where contamination from hard rock mining has led to elevated metal concentrations and acidic pH. Collection of pre- and post-remediation data sets generally followed the synoptic mass balance approach, in which numerous stream...
Authors
R.L. Runkel, K.E. Bencala, B. A. Kimball, K. Walton-Day, P. L. Verplanck
New light on a dark subject: On the use of fluorescence data to deduce redox states of natural organic matter (NOM) New light on a dark subject: On the use of fluorescence data to deduce redox states of natural organic matter (NOM)
This paper reports the use of excitation-emission matrix fluorescence spectroscopy (EEMS), parallel factor statistical analysis (PARAFAC), and oxidation-reduction experiments to examine the effect of redox conditions on PARAFAC model results for aqueous samples rich in natural organic matter. Fifty-four aqueous samples from 11 different geographic locations and two plant extracts were...
Authors
Donald L. Macalady, Katherine Walton-Day
Investigating hydraulic connections and the origin of water in a mine tunnel using stable isotopes and hydrographs Investigating hydraulic connections and the origin of water in a mine tunnel using stable isotopes and hydrographs
Turquoise Lake is a water-supply reservoir located north of the historic Sugarloaf Mining district near Leadville, Colorado, USA. Elevated water levels in the reservoir may increase flow of low-quality water from abandoned mine tunnels in the Sugarloaf District and degrade water quality downstream. The objective of this study was to understand the sources of water to Dinero mine drainage...
Authors
Katherine Walton-Day, Eileen Poeter
Non-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.