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Lake Erie Tributaries: Nutrient and streamflow trend results This data set includes WRTDS nutrient flux trend results and the values of daily streamflow trend results displayed in the Quantile-Kendall plots. For 1995-2015 nutrient trends, the method of generalized flow normalization (FNG) was used which explicitly addresses non-stationary streamflow conditions. For 2005-2015 nutrient trends, the WRTDS trend analyses used the method of stationary flow normalization (FNS) because streamflow nonstationarity is difficult to assess over this shorter duration time frame. The 1995-2015 annual nutrient trends were determined for all five nutrient parameters (TP, SRP, TN, NO23, TKN), and monthly trends were evaluated only for SRP. The 2005-2015 annual nutrient trends were determined... Categories: Data; Tags: Great Lakes, Indiana, Lake Erie, Michigan, Ohio, All tags... Weighted regression on time, discharge, and season (WRTDS), Western Lake Erie, environment, geoscientificInformation, nitrate, nitrogen, nutrient, phosphorus, streamflow, trend, water quality, Fewer tags Owasco Lake, New York spatial water-quality data, June 26 and October 8, 2019 This child item data set provides high-resolution, nearshore, spatial water-quality data collected from Owasco Lake, New York, on June 26 and October 8, 2019. All data are reported as raw measured values. Continuous water-quality monitors were mounted to a boat at approximately 0.5-meters below the water surface and used to measure nitrate, chlorophyll fluorescence (fChl), fluorescent dissolved organic matter (fDOM), dissolved oxygen, specific conductance, phycocyanin fluorescence (fPC), turbidity, pH, and temperature. Categories: Data; Tags: Contaminants, HABS, Finger Lakes, New York, Owasco Lake, Surface-Water Quality Monitoring, All tags... United States, Water Quality, algae, algal blooms, chlorophyll fluorescence (fChl), continuously-measured, cyanobacteria, dissolved oxygen, fluorescent dissolved organic matter (fDOM), freshwater (surface), hazards, limnology, nitrate, nutrient content (water), oxygen content (water), phycocyanin fluorescence (fPC), spatial, specific conductance, surface water quality, synoptic, turbidity, water pH, water temperature, Fewer tags Water-quality trends for rivers and streams in the Delaware River Basin using Weighted Regressions on Time, Discharge, and Season (WRTDS) models, Seasonal Kendall Trend (SKT) tests, and multisource data, Water Year 1978-2018 (input data) The datasets provided here are the input data used to run the Seasonal Kendall Trend (SKT) tests and Weighted Regressions on Time, Discharge, and Season (WRTDS) models. SKT tests use "annualSamplingFreqs_allSites.csv" and "wqData_screenedSitesAll.csv" which includes, for all site-parameter combinations, information on annual sampling frequencies and the screened water-quality data, respectively. The WRTDS models use "DRB.wqdata.20200521.csv", "DRB.flow.20200610.zip", and "DRB.info.20200521.csv" for calibration which includes, for all site-parameter combinations, the water-quality data, streamflow data (as separate .csv files for each site), model specifications and site information, respectively. The multisource... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Ammonia, Calcium, Chloride, Delaware, Delaware River, All tags... Magnesium, Major ions, Maryland, New Jersey, New York, Nitrate, Orthophosphate, filtered, Orthophosphate, unfiltered, Pennsylvania, Potassium, Seasonal Kendall trend test (SKT), Sodium, Specific conductance, Sulfate, Suspended sediment concentration, Total dissolved solids, Total nitrogen, Total phosphorus, Total suspended solids, Water Quality, Water Quality Water Analysis, Water-Quality Parameters, Weighted regressions on time, discharge and season (WRTDS), environment, nutrient content (water), salinity, suspended material (water), Fewer tags Input Files and WRTDS Model Output for the two major tributaries of Lake Koocanusa: Mass Removal Canadian discrete water quality data and daily streamflow records were evaluated using the Weighted Regression on Time, Discharge, and Seasons (WRTDS) model implemented with the EGRET R package (Hirsch et al. 2010, Hirsch and De Cicco 2015). Models were used to estimate loads of solutes and evaluate trends for three constituents of interest (selenium, nitrate, and sulfate). Six models were generated; one model for each of the three constituents of interest, in each of the two major tributaries to Lake Koocanusa: the Kootenay River at Fenwick (BC08NG0009), and the Elk River above Highway 93 Near Elko (BC08NK0003). Data were obtained by downloading data from the British Columbia Water Tool (https://kwt.bcwatertool.ca/surface-water-quality,... Categories: Data; Tags: British Columbia, Canada, Coal Mining, Elk River, Koocanusa Reservoir, All tags... Kootenai River, Kootenay Boundary, Lake Koocanusa, Lake Koocanusa, Nitrate, Selenium, Sulfate, Transboundary, Upper Kootenai, Water Quality, Fewer tags Water quality, quantity, and gas fluxes of the Upper Mississippi River basin (WY 2012-2016) This product consists of one tabular dataset and associated metadata of water quality information related to rivers, streams, and reservoirs in the Upper Mississippi River watershed between 2012 and 2016. This data release is a part of a national assessment of freshwater aquatic carbon fluxes. Data consist of organic and inorganic carbon related species, carbon dioxide and methane gas fluxes calculated from manual chamber measurements, nitrogen species, carbon isotopes, oxygen isotopes, cations, anions, trace metals, and various in situ measurements including: pH, water temperature, air temperature, barometric pressure, dissolved oxygen, turbidity, fluorescent dissolved organic matter, and specific conductance.... Categories: Data, Project; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Carbon, Fluorescent Dissolved Organic Matter (fDOM), Minnesota, Shingobee, Shingobee Headwaters Aquatic Ecosystems Project, All tags... Shingobee River Headwaters Region, Surface Water Quality, USGS Science Data Catalog (SDC), Upper Mississippi River Basin, Upper Mississippi River Basin Project, WATER QUALITY/WATER CHEMISTRY, Wisconsin, air temperature, alkalinity, aluminum, ammonium, atmospheric carbon dioxide, atmospheric methane, barium, boron, calcium, carbon dioxide (water), carbon dioxide (water), carbon dioxide flux, carbon isotopes, chloride, deuterium, dissolved oxygen, fluorescence index, greenhouse gas flux, hydrophilic organic acid, hydrophobic organic acid, hydrophobic organic neutral, inorganic carbon, magnesium, manganese, methane flux, nitrate, organic carbon, oxygen isotopes, pH (water), potassium, silicon dioxide, sodium, specific conductance, strontium, sulfate, sulfur, total dissolved nitrogen, total iron, transphilic organic acid, turbidity, ultraviolet-visible absorbance, water quality, water temperature, Fewer tags Nutrient and streamflow model-input data (1974-2016) and trend results (1987-2016) for selected Lake Erie tributaries Data provided in this release support the findings in Choquette et al. (2019), utilizing methods for evaluating water-quality and daily-streamflow trends described also in Hirsch and DeCicco (2015 and 2018a) and Hirsch (2018). The trend results and model-input data focus on 10 locations in the Lake Erie watershed that have long-term (20 or more years) water-quality and streamflow monitoring records. The trend results include the years 1987 through 2016 or specified sub-periods during this time frame. The model-input data records spanned the time period 1974 through 2016 although record lengths varied by site, data type, and trend analysis. The water-quality records were provided by the National Center for Water... Categories: Data; Tags: Great Lakes, Indiana, Lake Erie, Michigan, Ohio, All tags... USGS Science Data Catalog (SDC), Water Quality, Water Resources, Weighted regression on time, discharge, and season (WRTDS), Western Lake Erie, geoscientificInformation, nitrate, nitrogen, nutrient, phosphorus, streamflow, trend, water quality, Fewer tags Natural gradient, lakebed tracer tests using nitrite in a nitrate-contaminated groundwater discharge zone in Ashumet Pond, Massachusetts The U.S. Geological Survey Toxic Substances Hydrology Program at Cape Cod has been investigating the fate and transport of a treated-wastewater, groundwater contaminant plume. A portion of the contaminated groundwater discharges into Ashumet Pond, a kettle hole, freshwater lake. A study was conducted from June 2013 to June 2015 to document transport, transformation, and discharge of dissolved inorganic nitrogen species (DIN; nitrate, nitrite, and nitrous oxide) from the contaminant plume to the lake, across the groundwater-surface water interface. As part of that study, in October 2014, two natural gradient tracer tests were conducted within the lake bed sediments using nitrite as a reactive tracer and bromide as... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Ashumet Pond, Denitrification, Environmental Health, Geochemistry, Groundwater-surface water interaction, All tags... Hydrogeology, Lakes, Nitrate, USGS Science Data Catalog (SDC), Water Quality, Fewer tags Modeled nutrient and sediment concentrations from major rivers in Illinois based on continuous monitoring from October 1, 2015, through September 30, 2020 During water years 2016–2020, the U.S. Geological Survey, in cooperation with the Illinois Environmental Protection Agency, operated continuous monitoring stations on eight of the major rivers in Illinois to better quantify nutrient and sediment loadings from the State of Illinois to the Mississippi River. This data release presents estimates of daily nitrate, suspended sediment, and phosphorus concentrations and uncertainty from that period. The concentration estimates are based on a combination of discrete sampling data and surrogate regression (imputation). The data release comprises a single csv file containing daily timeseries of concentration and uncertainty for each monitoring station. Categories: Data; Tags: Hydrology, Illinois, USGS Science Data Catalog (SDC), continuous monitoring, nitrate, All tags... suspended-sediment concentration, total phosphorus, water quality, Fewer tags Near-Surface Spatial Water-Quality Surveys along the St. Lucie and Caloosahatchee Rivers in October 2017, Lake Okeechobee and Caloosahatchee River in July 2018, and Caloosahatchee River, St. Lucie River and Lake Okeechobee in August of 2018, south Florida (ver. 1.1, December 2020) This U.S. Geological Survey (USGS) Data Release provides spatial water-quality data collected from the St. Lucie and Caloosahatchee Rivers in October 2017, Lake Okeechobee and the Caloosahatchee River in July 2018 and the Caloosahatchee River, St. Lucie River and Lake Okeechobee in August of 2018, south Florida. Geo-referenced measurements of near surface water temperature, specific conductance, dissolved oxygen, pH, turbidity, chlorophyll fluorescence, phycocyanin fluorescence, and fluorescence of dissolved organic matter were recorded at 5 second intervals and nitrate+nitrite was recorded at 1 minute intervals during water-quality surveys in order to create high resolution water-quality maps of the study area. Categories: Data, Data Release - Revised; Tags: Caloosahatchee Canal, Caloosahatchee River, Lake Okeechobee, North Fork Saint Lucie River, Saint Lucie Canal, All tags... Saint Lucie Inlet, South Fork Saint Lucie River, USGS Science Data Catalog (SDC), Water Quality, chlorophyll, continuously measured, dissolved oxygen, field deployment, fluorescent dissolved organic matter, nitrate, pH, phycocyanin, spatial, specific conductance, turbidity, water quality, water quality, water temperature, Fewer tags Skaneateles Lake, New York spatial water-quality data, August 23, 2018 This child item data set provides high-resolution, nearshore, spatial water-quality data collected from Skaneateles Lake, New York, on August 23, 2018. All data are reported as raw measured values. Continuous water-quality monitors were mounted to a boat at approximately 0.5-meters below the water surface and used to measure nitrate, chlorophyll fluorescence (fChl), fluorescent dissolved organic matter (fDOM), dissolved oxygen, specific conductance, phycocyanin fluorescence (fPC), turbidity, pH, and temperature. Categories: Data; Tags: Contaminants, HABS, Finger Lakes, New York, Skaneateles Lake, Surface-Water Quality Monitoring, All tags... United States, Water Quality, algae, algal blooms, chlorophyll fluorescence (fChl), continuously-measured, cyanobacteria, dissolved oxygen, fluorescent dissolved organic matter (fDOM), freshwater (surface), hazards, limnology, nitrate, nutrient content (water), oxygen content (water), phycocyanin fluorescence (fPC), spatial, specific conductance, surface water quality, synoptic, turbidity, water pH, water temperature, Fewer tags Calculated Leached Nitrogen from Septic Systems in Wisconsin, 1850-2010 This data release contains a netCDF file containing decadal estimates of nitrate leached from septic systems (kilograms per hectare per year, or kg/ha) in the state of Wisconsin from 1850 to 2010, as well as the python code and supporting files used to create the netCDF file. The netCDF file is used as an input to a Nitrate Decision Support Tool for the State of Wisconsin (GW-NDST; Juckem and others, 2024). The dataset was constructed starting with 1990 census records, which included responses about households using septic systems for waste disposal. The fraction of population using septic systems in 1990 was aggregated at the county scale and applied backward in time for each decade from 1850 to 1980. For decades... Categories: Data; Types: Downloadable, Map Service, NetCDF OPeNDAP Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: Leaching, Nitrate, Nitrogen, Septic, USGS Science Data Catalog (SDC), All tags... Wisconsin, biota, Fewer tags Water quality and gas fluxes of Interior Alaska (2014-2018) This product consists of multiple tabular datasets and associated metadata of water quality information related to rivers, streams, and lakes in the Yukon River watershed between 2014 and 2018. This data release is apart of the National Aeronautics and Space Administration (NASA) funded Arctic-Boreal Vulnerability Experiment (ABoVE) and is an assessment of water quality and greenhouse gas fluxes within the interior of Alaska. Sampling frequency varied across locations, with some sites sampled twice a year or more. Data consist of: organic and inorganic carbon related species, carbon dioxide and methane gas fluxes calculated from manual chamber measurements, nitrogen species, carbon isotopes, oxygen and deuterium... Categories: Data; Types: Data, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alaska, Boot Lake, CH4, CO2, CO2 Bubble Trap, All tags... Canvasback Lake, Carbon, DIC, DOC, Dalton Highway, Datasets/Database, Interior Alaska, Steese Highway, USGS Science Data Catalog (SDC), Water Quality, Water Resources, Yukon Flats, alkalinity, ammonium, anion, biogeochemical cycling, calcium, carbon dioxide, carbon flux, cation, chloride, deuterium, dissolved inorganic carbon, dissolved organic carbon, greenhouse gas flux, lake chemistry, magnesium, methane, nitrate, nitrogen, sodium, specific conductance, stream chemistry, sulfate, total dissolved nitrogen, total iron, water chemistry, water isotopes, water quality, water resources, Fewer tags WRTDS-K nutrient and sediment loads at Illinois EPA Ambient Water Quality Monitoring Network sites through water year 2020 This data release contains estimates of annual nitrate, suspended sediment, phosphorus, and chloride loads and uncertainty from sites in the Illinois Environmental Protection Agency (Illinois EPA) Ambient Water Quality Monitoring Network. The loads were estimated using Weighted Regressions on Time, Discharge, and Season with Kalman filtering (WRTDS-K) and existing discrete water-quality data and discharge data collected by Illinois EPA, the U.S. Geological Survey, and Illinois State Water Survey through water year (WY) 2020. All water-quality and discharge data used in this work are available from the Water Quality Portal and the National Water Information System. The data release comprises a single comma-separated... Categories: Data; Tags: Ambient Water-Quality Monitoring Network, Hydrology, Illinois, USGS Science Data Catalog (SDC), Water Quality, All tags... Water Resources, nitrate, nitrogen, phosphorus, regression analysis, suspended sediment, water quality, Fewer tags Coastal Groundwater Chemical Data from the North and South Shores of Long Island, New York Groundwater data were collected in the spring and fall of 2008 from three sites representing different geological settings and biogeochemical conditions within the surficial glacial aquifer of Long Island, NY. Investigations were designed to examine the extent to which average vadose zone thickness in contributing watersheds controlled biogeochemical conditions and processes, including dissolved oxygen concentration (DO), oxidation-reduction potential (Eh), dissolved organic carbon concentration (DOC), and microbial dinitrogen (N2) production. Greatest N2 production was observed at the south shore of Long Island, which is characterized by a thin vadose zone, low DO and Eh, and relatively high DOC. Limited N2 production... Categories: Data; Types: Citation; Tags: Geochemistry, Great South Bay, Hydrogeology, Long Island Sound, Long Island, NY, United States, All tags... Manhasset Bay, Northport Harbor, Northport, NY, United States, Patchogue, NY, United States, Port Washington, NY, United States, Water Resources, climate change, denitrification, dissolved organic carbon, dissolved oxygen, environment, excess air, geoscientificInformation, groundwater, groundwater discharge, hydrogeology, membrane inlet mass spectrometry (MIMS), nitrate, oxygen content (water), recharge temperature, salinity, tritium analysis, vadose zone thickness, water chemistry, water pH, Fewer tags Water-quality trends for rivers and streams in the Delaware River Basin using Weighted Regressions on Time, Discharge, and Season (WRTDS) models, Seasonal Kendall Trend (SKT) tests, and multisource data, Water Year 1978-2018 (output data) The datasets provided here are the output from the Seasonal Kendall Trend (SKT) test and Weighted Regressions on Time, Discharge, and Season (WRTDS) model that characterize changes in water quality in rivers and streams across the Delaware River Basin. SKT results are compiled in "skt_out.csv" for all combinations of site, water-quality parameter, and trend period. WRTDS results are compiled in four datasets. If unspecified, generalized flow normalization (GFN) results are reported. Stationary flow normalization (SFN) results are indicated in the datasets. "wrtds_out_annResults.csv" contains the annual estimates of mean concentration and load and GFN and SFN estimates by site and parameter for the entire calibration... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Ammonia, Calcium, Chloride, Delaware, Delaware River, All tags... Delaware River Basin, Magnesium, Major ions, Maryland, New Jersey, New York, Nitrate, Orthophosphate, filtered, Orthophosphate, unfiltered, Pennsylvania, Potassium, Seasonal Kendall trend test (SKT), Sodium, Specific conductance, Sulfate, Suspended sediment concentration, Total dissolved solids, Total nitrogen, Total phosphorus, Total suspended solids, Water Quality, Water Quality Water Analysis, Water Resources, Water quality, Water-Quality Parameters, Weighted regressions on time, discharge and season (WRTDS), environment, nutrient content (water), salinity, suspended material (water), water-quality trends, Fewer tags Input Files and WRTDS Model Output for the two major tributaries of Lake Koocanusa: Water Quality Canadian discrete water quality data and daily streamflow records were evaluated using the Weighted Regression on Time, Discharge, and Seasons (WRTDS) model implemented with the EGRET R package (Hirsch et al. 2010, Hirsch and De Cicco 2015). Models were used to estimate loads of solutes and evaluate trends for three constituents of interest (selenium, nitrate, and sulfate). Six models were generated; one model for each of the three constituents of interest, in each of the two major tributaries to Lake Koocanusa: the Kootenay River at Fenwick (BC08NG0009), and the Elk River above Highway 93 Near Elko (BC08NK0003). Data were obtained by downloading data from the British Columbia Water Tool (https://kwt.bcwatertool.ca/surface-water-quality,... Categories: Data; Tags: Coal Mining, Elk River, Koocanusa Reservoir, Kootenai River, Kootenay Boundary, All tags... Lake Koocanusa, Lake Koocanusa, Nitrate, Selenium, Sulfate, Transboundary, Upper Kootenai, Water Quality, Fewer tags Near-Surface Spatial Water-Quality Surveys along the Caloosahatchee River, St. Lucie River and Lake Okeechobee in July and August 2019, south Florida (ver. 1.1, December 2020) This U.S. Geological Survey (USGS) Data Release provides spatial water-quality data collected from the Caloosahatchee River, St. Lucie River and Lake Okeechobee July 15-18 and August 19-22 of 2019, south Florida. Geo-referenced measurements of near surface water temperature, specific conductance, dissolved oxygen, pH, turbidity, chlorophyll fluorescence, phycocyanin fluorescence, and fluorescence of dissolved organic matter were recorded at 5 second intervals and nitrate+nitrite as nitrogen was recorded at 1 minute intervals during water-quality surveys in order to create high resolution water-quality maps of the study area. First posted: April 9, 2020 Revised: December 10, 2020, ver.1.1 Categories: Data; Tags: Caloosahatchee Canal, Caloosahatchee River, Lake Okeechobee, North Fork Saint Lucie River, Saint Lucie Canal, All tags... Saint Lucie Inlet, South Fork Saint Lucie River, USGS Science Data Catalog (SDC), chlorophyll, continuously measured, dissolved oxygen, field deployment, fluorescent dissolved organic matter, nitrate, pH, phycocyanin, spatial, specific conductance, turbidity, water quality, water quality, water temperature, Fewer tags Monthly inorganic nitrogen atmospheric wet deposition estimates for the conterminous United States, 1999 through 2020 This data release provides estimates of monthly wet atmospheric deposition of total inorganic nitrogen (TIN)--the summation of nitrate (NO3) and ammonium (NH4) ions--for the conterminous United States from 1999 through 2020 in units of kilograms nitrogen per square kilometer per month with spatial reference ESPG 4326. The spatial resolution of the gridded data provided in this release is approximately 5 km. The source data used to provide wet deposition estimates include monthly atmospheric concentration data interpolated between National Atmospheric Deposition Program (NADP, 2022) observation stations and monthly precipitation estimates from the National Oceanic and Atmospheric Administration's ClimGrid data (NOAA,... Categories: Data; Tags: Ammonium, Ammonium, Atmospheric Wet Deposition, Atmospheric Wet Deposition, Geochemistry, All tags... Hydrology, Inorganic Nitrogen, Inorganic Nitrogen, National Atmospheric Deposition Program, National Atmospheric Deposition Program, Nitrate, Nitrate, Remote Sensing, USGS Science Data Catalog (SDC), Water Quality, Water Resources, farming, Fewer tags Nutrient and streamflow trend results This data set includes WRTDS nutrient flux trend results and the values of daily streamflow trend results displayed in the Quantile-Kendall plots. For 1995-2015 nutrient trends, the method of generalized flow normalization (FNG) was used which explicitly addresses non-stationary streamflow conditions. For 2005-2015 nutrient trends, the WRTDS trend analyses used the method of stationary flow normalization (FNS) because streamflow nonstationarity is difficult to assess over this shorter duration time frame. The 1995-2015 annual nutrient trends were determined for all five nutrient parameters (TP, SRP, TN, NO23, TKN), and monthly trends were evaluated only for SRP. The 2005-2015 annual nutrient trends were determined... Categories: Data; Tags: Great Lakes, Indiana, Lake Erie, Michigan, Ohio, All tags... Weighted regression on time, discharge, and season (WRTDS), Western Lake Erie, environment, geoscientificInformation, nitrate, nitrogen, nutrient, phosphorus, streamflow, trend, water quality, Fewer tags Modeled nutrient and sediment concentrations from the Des Plaines River at Route 53 at Joliet, Illinois, based on continuous monitoring from October 1, 2017, through September 30, 2020 During the 2018–20 water years, the U.S. Geological Survey, in cooperation with the Metropolitan Water Reclamation District of Greater Chicago, operated a continuous monitoring station on the Des Plaines River at Route 53 at Joliet, Illinois (USGS station 05537980), to better quantify nutrient and sediment loadings from the Greater Chicago Area to the Illinois River. This data release presents estimates of daily nitrate, suspended sediment, and phosphorus concentrations and uncertainty from that period. The concentration estimates are based on a combination of discrete sampling, continuously monitored surrogates, and surrogate regression (Bayesian imputation). The data release comprises a single csv file containing... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Des Plaines River, Illinois, Joliet, USGS Science Data Catalog (SDC), Water Quality, All tags... Water Resources, continuous monitoring, nitrate, suspended-sediment concentration, total phosphorus, water quality, Fewer tags 1 2 »