Concentrations of major and trace elements as determined by chemical analysis of the less than 2-millimeter size fraction of bed-sediment and floodplain samples in the Tri-State Mining District, 2011-12. All samples were collected by the U.S. Geological Survey. Analysis was conducted by the USGS Central Mineral and Environmental Resources Science Center laboratory in Denver, Colorado using inductively coupled plasma-atomic emission spectrometry and inductively coupled plasma-mass spectrometry methods described in Taggart (2002) as referenced in the associated report. Table Contents: Core_identifier, Depth_1, Depth_2, Site_Identifier, Arsenic, Cadmium, Barium, Cobalt, Copper, Nickel, Magnesium, Lead, Zinc, Aluminum, Antimony, Beryllium, Bismuth, Calcium, Cerium, Cesium, Chromium, Gallium, Indium, Iron, Lanthanum, Lithium, Manganese, Molybdenum, Niobium, Phosphorus, Potassium, Rubidium, Scandium, Silver, Sodium, Strontium, Sulfur, Tellurium, Thallium, Thorium, Tin, Titanium, Tungsten, Uranium, Vanadium, Yttrium, and Zirconium which are explained further in the referenced data dictionary.

Record amounts of precipitation fell across the Colorado Front Range from September 9 to 16, 2013, resulting in extensive flooding in the South Platte River and its major mountain tributaries. In this study, the effects of the flood on the City of Boulder, Colorado urban hydrology system were assessed using weekly time-series sampling of 3 source waters (Boulder tap water, Boulder wastewater treatment facility effluent, and Boulder Creek water) conducted from September 20 to October 16, 2012 (n=5) and August 13 to September 30, 2013 (n=8). The effect of the flood on the South Platte River was assessed using a single basin-wide sampling of 5 main stem and 7 tributary sites from September 18 to 22, 2013. Filtered water samples were analyzed at the Boulder sites, and filtered and unfiltered samples were analyzed at the South Platte River sites. Major elements were measured by inductively coupled plasma-optical emission spectrometry and trace elements were measured by inductively coupled plasma-mass spectrometry. Each sample was measured in triplicate and the averages and standard deviations are reported. The results from analyses of associated quality assurance samples (field blanks and field duplicates) also are presented.

Record amounts of precipitation fell across the Colorado Front Range from September 9 to 16, 2013, resulting in extensive flooding in the South Platte River and its major mountain tributaries. In this study, the effects of the flood on the City of Boulder, Colorado urban hydrology system were assessed using weekly time-series sampling of 3 source waters (Boulder tap water, Boulder wastewater treatment facility effluent, and Boulder Creek water) conducted from September 20 to October 16, 2012 (n=5) and August 13 to September 30, 2013 (n=8). The effect of the flood on the South Platte River was assessed using a single basin-wide sampling of 5 main stem and 7 tributary sites from September 18 to 22, 2013. Filtered water samples were analyzed at the Boulder sites, and filtered and unfiltered samples were analyzed at the South Platte River sites. Major elements were measured by inductively coupled plasma-optical emission spectrometry and trace elements were measured by inductively coupled plasma-mass spectrometry. Each sample was measured in triplicate and the averages and standard deviations are reported. The results from analyses of associated quality assurance samples (field blanks and field duplicates) also are presented.

This U.S. Geological Survey (USGS) Data Release contains locations and concentrations of metals in various size fractions in floodplain-core, streambed-sediment samples, and sediment deposited on the flood plain from the December 2015 flood and underlying soils collected from along the Middle Big River and tributaries in the Southeast Missouri Barite District from 2012 to 2015. All samples were analyzed either by inductively-coupled plasma-mass spectrometry (ICP-MS) or x-ray fluorescence (XRF). Concentrations of metals in quality-assurance samples are also presented to evaluate the effect of sample splitting and compare the U.S. Environmental Protection Agency (EPA) and USGS Missouri Water Science Center XRF units. Major and trace elements included in this data release include aluminum, antinomy, arsenic, barium, beryllium, bismuth, cadmium, calcium, cerium, cesium, chromium, cobalt, copper, gallium, indium, iron, lanthanum, lead, lithium, magnesium, manganese, molybdenum, nickel, niobium, phosphorus, potassium, rubidium, scandium, silver, sodium, strontium, sulfur, tellurium, thallium, thorium, tin, titanium, tungsten, uranium, vanadium, yttrium, and zinc. These data tables are provided as machine readable access to the tables in the following publication: Smith, D.C., and Schumacher, J.G., 2018, Distribution of mining-related trace elements in streambed and flood-plain sediment along the middle Big River and tributaries in the Southeast Missouri Barite District, 2012–15: U.S. Geological Survey Scientific Investigations Report 2018–5103, 89 p., https://doi.org/10.3133/sir20185103.

This U.S. Geological Survey (USGS) Data Release contains locations and concentrations of metals in various size fractions in floodplain-core, streambed-sediment samples, and sediment deposited on the flood plain from the December 2015 flood and underlying soils collected from along the Middle Big River and tributaries in the Southeast Missouri Barite District from 2012 to 2015. All samples were analyzed either by inductively-coupled plasma-mass spectrometry (ICP-MS) or x-ray fluorescence (XRF). Concentrations of metals in quality-assurance samples are also presented to evaluate the effect of sample splitting and compare the U.S. Environmental Protection Agency (EPA) and USGS Missouri Water Science Center XRF units. Major and trace elements included in this data release include aluminum, antinomy, arsenic, barium, beryllium, bismuth, cadmium, calcium, cerium, cesium, chromium, cobalt, copper, gallium, indium, iron, lanthanum, lead, lithium, magnesium, manganese, molybdenum, nickel, niobium, phosphorus, potassium, rubidium, scandium, silver, sodium, strontium, sulfur, tellurium, thallium, thorium, tin, titanium, tungsten, uranium, vanadium, yttrium, and zinc. These data tables are provided as machine readable access to the tables in the following publication: Smith, D.C., and Schumacher, J.G., 2018, Distribution of mining-related trace elements in streambed and flood-plain sediment along the middle Big River and tributaries in the Southeast Missouri Barite District, 2012–15: U.S. Geological Survey Scientific Investigations Report 2018–5103, 89 p., https://doi.org/10.3133/sir20185103.

Sampled depth intervals and selected trace element concentrations as determined by X-ray fluorescence analysis of the intact floodplain cores in the Tri-State Mining District, 2011-12. All samples were collected by the U.S. Geological Survey using conventional coring methods with the exception of cores SH-FB-1 and SH-FB-4 which were collected using a plastic scoop; analysis was conducted using an x -ray fluorescence instrument owned and operated by U.S. Fish and Wildlife Service personnel following the U. S. Environmental Protection Agency Method 6200 (EPA, 2007) at the U.S. Fish and Wildlife Service and U.S. Geological Survey offices. Table Headings: Core_identifier, Site_identifier, Depth_1, Depth_2, Ave_depth, Arsenic, Cadmium, Barium, Cobalt, Copper, Manganese, Nickel, Lead, and Zinc which are explained further in the referenced data dictionary.

Sampled depth intervals and selected trace element concentrations as determined by X-ray fluorescence analysis of the intact floodplain cores in the Tri-State Mining District, 2011-12. All samples were collected by the U.S. Geological Survey using conventional coring methods with the exception of cores SH-FB-1 and SH-FB-4 which were collected using a plastic scoop; analysis was conducted using an x -ray fluorescence instrument owned and operated by U.S. Fish and Wildlife Service personnel following the U. S. Environmental Protection Agency Method 6200 (EPA, 2007) at the U.S. Fish and Wildlife Service and U.S. Geological Survey offices. Table Headings: Core_identifier, Site_identifier, Depth_1, Depth_2, Ave_depth, Arsenic, Cadmium, Barium, Cobalt, Copper, Manganese, Nickel, Lead, and Zinc which are explained further in the referenced data dictionary.

These data contain concentrations of major and trace elements measured by inductively coupled plasma mass spectrometry at the laboratory of various size fractions (less than 0.063, less than 0.250, and less than 2 millimeters) from the middle Big River and tributaries draining the Barite District.

These data contain concentrations of major and trace elements measured by inductively coupled plasma mass spectrometry at the laboratory of various size fractions (less than 0.063, less than 0.250, and less than 2 millimeters) from the middle Big River and tributaries draining the Barite District.