Filters: partyWithName: Water Resources (X) > partyWithName: Robert L Runkel (X) > partyWithName: Colorado Water Science Center (X)
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On July 26, 2017, a solution containing approximately 200 kilograms of dissolved sodium bromide was added to the the flooded underground shaft of the Minnesota Mine, near Empire, Colorado. This addition was conducted as part of an effort to determine the degree to which the mine shaft is hydrologically connected to a series of downgradient seeps and springs. These seeps and springs discharge from the hillside and enter Lion Creek, an acidic, metal-rich stream that lies immediately to the west of the Minnesota Mine. A water quality sonde and pressure transducer deployed within the shaft recorded temperature, specific conductance, and stage before, during, and after the addition. The downgradient seeps and springs...
Categories: Data;
Tags: Empire, Colorado,
Environmental Health,
Geochemistry,
Hydrogeology,
Lion Creek,
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,
Note: This data release has been deprecated. Please see new data release here: https://doi.org/10.5066/P9HGC2V4 During review of the parent report for this data release, Walton-Day and others (2021), an error was discovered in the reported bromide injectate concentration. In addition, rounded bromide concentrations reported in version 1 were not sufficient to allow a user to recalculate and replicate reported stream-discharge values. Also, the values of stream discharge stored in the NWIS database and available to the public are rounded to one decimal place, which does not allow accurate recalculation and replication of the metal loading results presented in the parent report, Walton-Day and others (2021). In this...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: USGS Science Data Catalog (SDC)
The American Tunnel, the Black Hawk mine, the Gold King mine, the Mogul mine, and the Red and Bonita mine are located in the Cement Creek watershed, tributary to the upper Animas River near Silverton, Colorado. All five sites have tunnels that drain groundwater from abandoned underground mine workings to the surface. This draining water has elevated concentrations of metals and degrades water quality in Cement Creek. Water quality (pH, and dissolved copper, manganese, and zinc concentrations) and discharge data were compiled from multiple sources to examine changes in these parameters through time. Copper, manganese, and zinc loads calculated from these data are included in the data files. Data are reported for...
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Colorado,
Environmental Health,
Geochemistry,
Gladstone,
San Juan,
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