Research Hydrologist
Colorado Water Science Center
Email:
kwaltond@usgs.gov
Office Phone:
303-236-6930
Fax:
303-236-4912
ORCID:
0000-0002-9146-6193
Location
DFC Bldg 53
Box 25046
Denver Federal Center
Denver
, CO
80225-0046
US
Supervisor:
John (Ryan) R Banta
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Two synoptic sampling campaigns were conducted near Breckenridge, Colorado, to quantify metal loading to Illinois Gulch, a tributary of the Blue River. The first campaign, conducted in August 2016, was designed to determine the degree to which Illinois Gulch loses water to the underlying mine workings, and to determine the effect of these losses on observed metal loads. The second campaign, conducted in September 2017, was designed to evaluate metal loading within Iron Springs, a subwatershed that was responsible for the majority of the metal loading observed in 2016. A continuous, instream injection of a sodium bromide (NaBr) tracer was initiated at the head of the respective study reaches several days prior to...
Categories: Data;
Tags: Breckenridge Colorado,
Environmental Health,
Geochemistry,
Illinois Gulch,
Summit County, All tags...
USGS Science Data Catalog (SDC),
Water Quality,
Water Resources,
acid mine drainage,
bromide,
headwater stream,
hydrologic tracer,
metal loads,
metals,
mine workings,
slug injection,
synoptic sampling,
tracer dilution, Fewer tags
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Leavenworth Creek, a tributary of South Clear Creek and Clear Creek near Georgetown, Colorado contains copper, lead, and zinc concentrations that are near to or exceed aquatic life standards. The creek drains the Argentine mining district where mining was active primarily in the early 1900s. In the summer of 2012, the U.S. Geological Survey (USGS) conducted a metal-loading study using tracer dilution and spatially detailed synoptic sampling to assess the location and magnitude of copper, lead, manganese, and zinc sources to Leavenworth Creek. Sodium bromide solution was injected into the stream to facilitate calculation of stream discharge at all stream sites using the principles of tracer dilution. Consequently,...
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Clear Creek County,
Georgetown, Colorado,
Leavenworth Creek,
USGS Science Data Catalog (SDC),
contamination and pollution, All tags...
environment,
inlandWaters,
mineral resources,
tracer study,
water quality, Fewer tags
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This U.S. Geological Survey (USGS) data release contains data from stream water, groundwater, and soil samples collected in 2019 and 2020 in the North Quartz Creek watershed in central Colorado. Fourteen streambank wells were installed in pairs at seven locations in August 2020 to capture the emerging groundwater from the left bank and right banks (relative to downstream-facing direction) and a synoptic sampling campaign was conducted to quantify metal contributions to the stream. A continuous, instream injection of sodium bromide (NaBr) was initiated at the head of the 5 km study reach several days prior to the synoptic sampling campaign and maintained throughout the duration of the study. Bromide concentrations...
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service,
Shapefile;
Tags: "Environmental Health"],
"Mineral Resources",
"Water Quality",
GGGSC,
Geology, Geophysics, and Geochemistry Science Center, All tags...
Gunnison County, Colorado,
Gunnison National Forest,
MRP,
Mineral Resources Program,
North Quartz Creek,
Town of Pitkin,
U.S. Geological Survey,
USGS,
USGS Science Data Catalog (SDC),
["Geochemistry",
abandoned mines and quarries,
chemical tracer studies,
environment,
geochemistry,
geochemistry,
groundwater and surface-water interaction,
groundwater geochemistry,
inland waters,
mine drainage,
streambank well,
sulfide-weathering,
synoptic sampling,
tracer injection, Fewer tags
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This data release includes GIS datasets supporting the Colorado Legacy Mine Lands Watershed Delineation and Scoring tool (WaDeS), a web mapping application available at https://geonarrative.usgs.gov/colmlwades/. Water chemistry data were compiled from the U.S. Geological Survey (USGS) National Water Information System (NWIS), U.S. Environmental Protection Agency (EPA) STORET database, and the USGS Central Colorado Assessment Project (CCAP) (Church and others, 2009). The CCAP study area was used for this application. Samples were summarized at each monitoring station and hardness-dependent chronic and acute toxicity thresholds for aquatic life protections under Colorado Regulation No. 31 (CDPHE, 5 CCR 1002-31) for...
Categories: Data;
Tags: "Mineral Resources"],
"Water Quality",
Arapaho National Forest,
Carson National Forest,
Colorado, All tags...
GGGSC,
GIS,
Geology, Geophysics, and Geochemistry Science Center,
Grand Mesa National Forest,
Gunnison National Forest,
MRP,
Medicine Bow National Forest,
Mineral Resource Program,
Pike National Forest,
Rio Grande National Forest,
Routt National Forest,
San Isabel National Forest,
San Juan National Forest,
USGS Science Data Catalog (SDC),
Uncompahgre National Forest,
White River National Forest,
["Geochemistry",
alteration,
elevation,
geoscientificInformation,
geospatial analysis,
geospatial datasets,
mineral deposits,
mineralization,
remote sensing,
surface water quality,
water chemistry,
watershed delineation,
watershed management, Fewer tags
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Natural resource planning at all scales demands methods for assessing the impacts of resource development and use, and in particular it requires standardized methods that yield robust and unbiased results. Building from existing probabilistic methods for assessing the volumes of energy and mineral resources, we provide an algorithm for consistent, reproducible, quantitative assessment of resource development impacts. The approach combines probabilistic input data with Monte Carlo statistical methods to determine probabilistic outputs that convey the uncertainties inherent in the data. For example, one can utilize our algorithm to combine data from a natural gas resource assessment with maps of sage grouse leks and...
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