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Streamflow and water-quality data collected at the Henrys Fork near Rexburg, ID go to: https://www.sciencebase.gov/catalog/item/5d0d2cb7e4b0941bde52a208 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: May flow data; mloads.csv: May water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results
Categories: Data
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Field spikes were prepared at 207 stream and river sites as part of the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA) project between December, 2012, and September, 2015. At the field site, a depth-and width-integrated environmental sample was collected, and one subsample of the environmental sample was spiked with a known amount of a spike mixture. Both the spiked subsample ("spike sample") and another subsample ("environmental sample") of the original water sample were analyzed for pesticides at the USGS National Water Quality Laboratory (NWQL) by direct injection liquid chromatography with tandem mass spectrometry (LC-MS/MS), and were used to calculate the spike recovery of each analyte....
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High radium (Ra) concentrations in potable portions of the Cambrian-Ordovician (C-O) aquifer system were investigated using water-quality data and environmental tracers ( 3H, 3Hetrit, SF6 , 14C and 4Herad) of groundwater age from 80 public-supply wells (PSWs). Groundwater ages were estimated by calibration of tracers to lumped parameter models and ranged from modern (1 Myr) in the most downgradient, confined portions of the potable system. More than 80 and 40 percent of mean groundwater ages were older than 1000 and 50,000 yr, respectively. Anoxic, Fe-reducing conditions and increased mineralization develop with time in the aquifer system and mobilize Ra into solution resulting in the frequent occurrence of combined...
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To investigate the effects of imidacloprid on natural stream communities under controlled conditions, experimental streams were dosed with imidacloprid at concentrations ranging from 0.061 to 220 micrograms per liter (µg/L) for a period of 10 days. Natural stream macroinvertebrate communities were obtained from the Cache La Poudre River (Larimer County, CO) by colonizing trays full of large gravel for 75 days. The trays were added to laboratory experimental streams (mesocosms) at the USGS Fort Collins Science Center in Fort Collins, CO. At the end of 10 days, invertebrate abundance metrics were analyzed in relation to measured imidacloprid concentrations in water from the experimental streams. Declines in total...
Streamflow and water-quality data collected at the Bogue Phalia near Leland, MS go to: https://www.sciencebase.gov/catalog/item/5d0d2cb7e4b0941bde52a208 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: May flow data; mloads.csv: May water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results
Categories: Data
Streamflow and water-quality data collected at the Yazoo River below Steele Bayou near Long Lake, MS go to: https://www.sciencebase.gov/catalog/item/5d0d2cb7e4b0941bde52a208 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: May flow data; mloads.csv: May water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results
Categories: Data
Streamflow and water-quality data collected at the Mississippi River near St. Francisville, LA go to: https://www.sciencebase.gov/catalog/item/5d0d2cb7e4b0941bde52a208 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: May flow data; mloads.csv: May water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results
Categories: Data
Streamflow and water-quality data collected at the Atchafalaya River at Melville, LA go to: https://www.sciencebase.gov/catalog/item/5d0d2cb7e4b0941bde52a208 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: May flow data; mloads.csv: May water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results
Categories: Data
Streamflow and water-quality data collected at the Rio Grande near Brownsville, TX go to: https://www.sciencebase.gov/catalog/item/5d0d2cb7e4b0941bde52a208 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: May flow data; mloads.csv: May water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results
Categories: Data
Streamflow and water-quality data collected at the Jordan River at Salt Lake City, UT go to: https://www.sciencebase.gov/catalog/item/5d0d2cb7e4b0941bde52a208 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: May flow data; mloads.csv: May water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results
Categories: Data
Streamflow and water-quality data collected at the Sacramento River at Freeport, CA go to: https://www.sciencebase.gov/catalog/item/5d0d2cb7e4b0941bde52a208 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: May flow data; mloads.csv: May water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results
Categories: Data
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In 2015, the second of several Regional Stream Quality Assessments (RSQA) was done in the southeastern United States. The Southeast Stream Quality Assessment (SESQA) was a study by the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA) project. One of the objectives of the RSQA, and thus the SESQA, is to characterize the relationships between water-quality stressors and stream ecology and subsequently determine the relative effects of these stressors on aquatic biota within the streams (Van Metre and Journey, 2014). To meet this objective, a framework of fundamental geospatial data was required to develop physical and anthropogenic characteristics of the study region, sampled sites and corresponding...
Streamflow and water-quality data collected at the Neuse River at Kinston, NC go to: https://www.sciencebase.gov/catalog/item/5d0d2cb7e4b0941bde52a208 for the complete dataset and associated metadata.Possible file types include: aflow.csv: Annual flow data; aloads.csv: Annual water-quality load data; dflow.csv: Daily flow data; discqw.csv: Discrete water-quality results; mflow.csv: May flow data; mloads.csv: May water-quality load data; pestlong.csv: Pesticide abbreviations, long names, USGS parameter codes, and (CAS) numbers; pestsamp.csv: Discrete pesticide results
Categories: Data
Streamflow and water-quality data collected at the Illinois River at Valley City, IL go to: https://www.sciencebase.gov/catalog/item/57d1c97de4b0571647cfd3d3 for the complete dataset and associated metadata.
Categories: Data
Streamflow and water-quality data collected at the Brazos River near Rosharon, TX go to: https://www.sciencebase.gov/catalog/item/57d1c97de4b0571647cfd3d3 for the complete dataset and associated metadata.
Categories: Data
Streamflow and water-quality data collected at the Henrys Fork near Rexburg, ID go to: https://www.sciencebase.gov/catalog/item/57d1c97de4b0571647cfd3d3 for the complete dataset and associated metadata.
Categories: Data


map background search result map search result map Decadal Change Study Boundary for the U.S. Geological Survey Southeast Stream Quality Assessment Data for Radium Mobility and the Age of Groundwater in Public-drinking-water Supplies from the Cambrian-Ordovician Aquifer System, North-Central USA: Table 3. Detailed information on calculations of environmental tracer data. Decadal Change Study Boundary for the U.S. Geological Survey Southeast Stream Quality Assessment Data for Radium Mobility and the Age of Groundwater in Public-drinking-water Supplies from the Cambrian-Ordovician Aquifer System, North-Central USA: Table 3. Detailed information on calculations of environmental tracer data.