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Data for machine learning predictions of pH in the glacial aquifer system, northern USA A boosted regression tree (BRT) model was developed to predict pH conditions in three-dimensions throughout the glacial aquifer system (GLAC) of the contiguous United States using pH measurements in samples from 18,258 wells and predictor variables that represent aspects of the hydrogeologic setting. Model results indicate that the carbonate content of soils and aquifer materials strongly controls pH and when coupled with long flow paths, results in the most alkaline conditions. Conversely, in areas where glacial sediments are thin and carbonate-poor, pH conditions remain acidic. At depths typical of drinking-water supplies, predicted pH > 7.5 – which is associated with arsenic mobilization – occurs more frequently... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Boosted regression trees, Calcite saturation index, Connecticut, Geochemistry, Geochemistry, All tags... Glacial aquifer system, Groundwater, Groundwater corrosivity, Hydrology, Idaho, Illinois, Indiana, Iowa, Kansas, Machine learning, Maine, Massachusetts, Michigan, Minnesota, Missouri, Montana, NAWQA, Nebraska, New Hampshire, New Jersey, New York, North Dakota, Ohio, Pennsylvania, Rhode Island, South Dakota, USGS Science Data Catalog (SDC), Vermont, Washington, Water Quality, Wisconsin, pH, Fewer tags Disentangling the effects of low pH and metal mixture toxicity on macroinvertebrate diversity: data sets This dataset is comprised of water quality data and benthic macroinvertebrate data collected from basins in Colorado, USA, and Finland. The data includes ancillary water quality characteristics but also a suite of trace metals observed at each site. Also included are modeled outputs that characterize the bioavailability of each trace metal to a biotic ligand. These data were used to explore the importance of metal toxicity and pH as stressors on benthic macroinvertebrates characterized as the number of unique Ephemeroptera + Plecoptera + Trichoptera genera observed at each site. An interpretive summary of the work follows. One of the primary goals of biological assessment of rivers is to identify whether contaminants... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Benthic Macroinvertebrates, Bioavailability, Colorado, Europe, Finland, All tags... Forestry, Metals, Mining, Mixtures, National Water Quality Program, USGS Science Data Catalog (SDC), United States, biota, environment, inlandWaters, pH, Fewer tags Vertical water-quality profiles collected at Great Salt Lake monitoring sites, Utah, 1995–2022 This U.S. Geological Survey (USGS) Data Release provides vertical water-quality profiles collected at Great Salt Lake, Utah monitoring sites during 1995–2000 and 2011–2022. Data were collected using an In-Situ Multi-Parameter TROLL 9500, In-Situ AquaTROLL 500, In-Situ AquaTROLL 600, or YSI EXO2 Multiparameter Sonde. Recorded parameters include water temperature, specific conductance, dissolved oxygen, pH, and reduction potential. Historic data, 1995–2000, includes hydrometer and refractometer readings. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Great Salt Lake, USGS Science Data Catalog (SDC), Utah, Water Quality, dissolved oxygen, All tags... hypersaline, pH, salinity, specific conductance, terminal lake, vertical profile, water quality, water temperature, Fewer tags Surface water water-quality data for select constituents in Williston Basin, Montana, North Dakota, and South Dakota for water years 1970-2014 The surface water water-quality data were compiled from Water Quality Portal (https://www.waterqualitydata.us/) (National Water Quality Monitoring Council, 2015), USGS’s NAWQA Project’s data compilation (Oelsner and others, 2017) or the Montana Bureau of Mines and Geology (Montana Bureau of Mines, 2021), The compilation contains data for chloride, pH, specific conductance, sulfate, total dissolved solids (TDS) collected between water year 1970 to 2014. In addition 10 metals (aluminum, arsenic, barium, chromium, copper, iron, lead, selenium strontium, and zinc) analyzed during water years 1993 through 2014. National Water-Quality Monitoring Council, 2015, Water Quality Portal: National Water-Quality Monitoring Council,... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Montana, North Dakota, South Dakota, Water-Quality Parameters, Williston Basin, All tags... aluminum, arsenic, barium, chloride, chromium, copper, elevation, inlandWaters, iron, lead, pH, selenium, specific conductance, strontium, sulfate, surface-water, surface-water water-quality, surface-water water-quality, total dissolved solids, water-quality, water-quality, zinc, Fewer tags Water-quality data from two sites on Milford Lake, Kansas, July 26-27 and August 30-31, 2015 This U.S. Geological Survey (USGS) data release provides continuously-measured water-quality data collected from two sites on Milford Lake, Kansas, during July 26-27 and August 30-31, 2015. All data are reported as raw measured values and are not rounded to USGS significant figures. Water-quality monitors were used to measure water temperature, specific conductance, turbidity, pH, chlorophyll, phycocyanin, and dissolved oxygen at fifteen-minute intervals. This dataset includes all continuously measured data collected at two short-term, fixed-site locations as part of a study to evaluate the spatial variability of harmful algal blooms in Milford Lake, Kansas. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chlorophyll, Continuously measured, Dissolved Oxygen, Fixed Site 1 Milford Lake, Kansas, Fixed Site 2 Milford Lake, Kansas, All tags... Harmful algal bloom, Kansas, Milford Lake, Monitor, Phycocyanin, Sensor, Spatial data collection, Specific Conductance, Turbidity, USGS Science Data Catalog (SDC), USGS Station ID 390610096555500, USGS Station ID 391328097000500, United States, Water Resources, Water Temperature, pH, Fewer tags Vertical Profiles of Water Quality and Phytoplankton Data from Five Lakes in the Adirondack Park, New York State, 2021 This data release contains phytoplankton data and vertical profile measurements of water quality and light in oligotrophic (low nutrient) lakes within the Adirondack Park, New York State. Data were collected between June and October 2021 at five lakes. Four lake locations (Nearshore, Open Water, Layer, Bloom) were sampled representing one of four sample types (Bottom Sediment, Surface Water, Bloom Material, Layer). Water-quality field parameters (water temperature, dissolved-oxygen concentration and percent saturation, pH, specific conductance, turbidity, chlorophyll fluorescence, phycocyanin fluorescence, and fluorescent dissolved organic material) were measured at each sampling location from the surface to the... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Adirondack Park, Algal concentration, Blue Mountain Lake, Blue-green algae, Brant Lake, All tags... Chlorophyll-a, Contaminants, HABS, Cyanobacteria, Dissolved Oxygen, East Caroga Lake, Freshwater Ecosystems, Friends Lake, Harmful Algal Bloom, Limnology, New York, PAR, Phycocyanin, QW_ADK, Specific Conductance, Surface-Water Quality Monitoring, Turbidity, USGS Science Data Catalog (SDC), United States, Vertical Profile, Water Quality, Water Quality, Water Temperature, West Caroga Lake, algae, algal blooms, biota, elevation, freshwater (surface), hazards, inlandWaters, lake ecosystems, limnology, pH, phycology, phytoplankton, Fewer tags Sediment Oxygen Demand Data for Eastern Kansas Streams, August 2014 through December 2015 This U.S. Geological Survey (USGS) Data Release provides data collected from sediment oxygen demand (SOD) deployments conducted at eight stream sites in eastern Kansas during August 2014 through December 2015. Continuous water-quality monitors were used to measure water temperature, dissolved oxygen, pH, specific conductance, turbidity, and total algae (chlorophyll-a and phycocyanin) at thirty second intervals. All data are reported as raw measured values and are not rounded to USGS significant figures. The dataset includes all water-quality data collected during sediment oxygen demand deployments. Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chlorophyll, Dissolved Oxygen, Field Deployment, Grouse Creek, Indian Creek, All tags... Kansas, Kansas River, Little Arkansas River, Marmaton River, Phycocyanin, Pottawatomie Creek, Sediment, Sediment Oxygen Demand, Sediment Oxygen Demand Chamber, Specific Conductance, Turbidity, USGS Science Data Catalog (SDC), USGS Station ID 06887500, USGS Station ID 06892350, USGS Station ID 06914100, USGS Station ID 06917500, USGS Station ID 07144200, USGS Station ID 07146900, USGS Station ID 07148111, USGS Station ID 385608094380300, United States, Walnut River, Water Resources, Water Temperature, pH, Fewer tags Groundwater water-quality data for select constituents in Williston Basin, Montana, North Dakota, and South Dakota for water years 1970-2014 The groundwater water-quality data were compiled from Water Quality Portal (https://www.waterqualitydata.us/) (National Water Quality Monitoring Council, 2015), USGS’s NAWQA Project’s data compilation (Oelsner and others, 2017), and the Montana Bureau of Mines and Geology (Montana Bureau of Mines, 2021), The compilation contains data for chloride, pH, specific conductance, sulfate, total dissolved solids (TDS) collected between water year 1970 to 2014. In addition 10 metals (aluminum, arsenic, barium, chromium, copper, iron, lead, selenium strontium, and zinc) analyzed during water years 1993 through 2014. National Water-Quality Monitoring Council, 2015, Water Quality Portal: National Water-Quality Monitoring Council,... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Montana, North Dakota, South Dakota, Water-Quality Parameters, Williston Basin, All tags... aluminum, arsenic, barium, chloride, chromium, copper, elevation, groundwater, groundwater chemistry, groundwater quality, inlandWaters, iron, lead, pH, selenium, specific conductance, strontium, sulfate, total dissolved solids, water quality, zinc, Fewer tags