Filters: Types: OGC WMS Layer (X) > partyWithName: Jennifer C Murphy (X)

Filters Date Range Past year (4) Past month (0) Past week (0) Past day (0) Custom range... To   Search Types Map Service (11) OGC WFS Layer (11) OGC WMS Service (11) Citation (1) Contacts U.S. Geological Survey - ScienceBase Central Midwest Water Science Center U.S. Geological Survey Water Resources Danielle D Follette More... Categories Data (8) Tag Types Theme (11) Place (11) Harvest Set (7) Subject (3) USGS Scientific Topic Keyword (5) Tag Schemes None (7) USGS Thesaurus (6) Water-quality trends (1) Common geographic area (2) ISO 19115 Topic Category (7) Delaware River Basin (1) Water Quality Water Analysis (1) More... View Results as: JSON ATOM CSV

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 Data to support Leveraging machine learning to automate regression model evaluations for large multi-site water-quality trend studies This data release contains one dataset and one model archive in support of the journal article, "Leveraging machine learning to automate regression model evaluations for large multi-site water-quality trend studies," by Jennifer C. Murphy and Jeffrey G. Chanat. The model archive contains scripts (run in R) to reproduce the four machine learning models (logistic regression, linear and quadratic discriminant analysis, and k-nearest neighbors) trained and tested as part of the journal article. The dataset contains the estimated probabilities for each of these models when applied to a training and test dataset. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Delaware River Basin, USGS Science Data Catalog (SDC), United States of America, Water Quality, biota, All tags... k-nearest neighbors, linear discriminant analysis, logistic regression, quadratic discriminant analysis, Fewer tags Hydrologic event-based water-quality and streamflow data for three oxbow tributaries in northwestern Mississippi, 2007-2016 For about 10 years, the U.S. Geological Survey (USGS) has monitored water quality and streamflow in three agricultural drainage ditches in an effort to evaluate the influence of best management practices on water quality. These ditches are small tributaries to oxbow lakes located in the Mississippi Alluvial Plain of northwestern Mississippi--two sites (LWSR and LWT2) drain to Lake Washington and one site (BLT1) drains to Bee Lake. Streamflow was intermittent at these sites and the ditches were dry much of the year. When streamflow was present, flows were measured on 15-minute intervals and water-quality samples were collected over the course of the flow event using an automated sampler. These datasets were aggregated... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Lower Mississippi - Yazoo, USGS Science Data Catalog (SDC), Water Quality, agriculture, best management practices, All tags... conservation practices, nutrient content (water), runoff, sediment transport, Fewer tags U.S. Geological Survey streamgage matching results for water-quality sites of the Delaware River Basin This data set contains U.S. Geological Survey (USGS) streamgage matching results in tabular format for water-quality sites retrieved from the Water Quality Portal for the Delaware River Basin. The table contains a list of water-quality sites joined to USGS streamgages where the water-quality site and USGS streamgage are located on the same stream, as represented by the National Hydrography Dataset Plus (NHDPlus) "LevelPathID" attribute. The file represents a one-to-many relationship: each water-quality site, as represented by the unique identifier, "MonitoringLocationIdentifier", is joined to anywhere from zero streamgages (not on same stream as any gage; the gage info columns are NA) to one or more streamgages... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: NHDPlus, USGS streamgages, United States of America, water quality Water-quality trends and trend component estimates for the Nation's rivers and streams using Weighted Regressions on Time, Discharge, and Season (WRTDS) models and generalized flow normalization, 1972-2012 Nonstationary streamflow due to environmental and human-induced causes can affect water quality over time, yet these effects are poorly accounted for in water-quality trend models. This data release provides instream water-quality trends and estimates of two components of change, for sites across the Nation previously presented in Oelsner et al. (2017). We used previously calibrated Weighted Regressions on Time, Discharge, and Season (WRTDS) models published in De Cicco et al. (2017) to estimate instream water-quality trends and associated uncertainties with the generalized flow normalization procedure available in EGRET version 3.0 (Hirsch et al., 2018a) and EGRETci version 2.0 (Hirsch et al., 2018b). The procedure... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Contiguous United States and Puerto Rico, USGS Science Data Catalog (SDC), United States, biota, carbon, All tags... concentration, loads (fluxes), major ions, nutrients, rivers, salinity, sediment, streams, surface water quality, water-quality trends, 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 Multisource surface-water-quality data and U.S. Geological Survey streamgage match for the Delaware River Basin Jointly managed by multiple states and the federal government, there are many ongoing efforts to characterize and understand water quality in the Delaware River Basin (DRB). Many State, Federal and non-profit organizations have collected surface-water-quality samples across the DRB for decades and many of these data are available through the National Water Quality Monitoring Council's Water Quality Portal (WQP). For this data release, WQP data in the DRB were harmonized, meaning that they were processed to create a clean and readily usable dataset. The harmonization process included the synthesis of parameter names and fractions, the condensation of remarks and other data qualifiers, the resolution of duplicate... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Delaware, Delaware Basin, Delaware River, Delaware River Basin, Maryland, All tags... National Water Quality Program, New Jersey, New York, Pennsylvania, USGS Science Data Catalog (SDC), Upper Delaware River, Delaware River Basin, Upper Delaware Scenic and Recreational River, Water Quality, Water Quality, Water Quality Water Analysis, Water Resources, Water-Quality Parameters, 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 This data release provides water-quality trends for rivers and streams in the Delaware River Basin determined using the Weighted Regressions on Time, Discharge, and Season (WRTDS) model and the Seasonal Kendall Trend (SKT) test. Sixteen water-quality parameters were assessed, including nutrients (ammonia, nitrate, filtered orthophosphate, total nitrogen, total phosphorus, and unfiltered orthophosphate), major ions (calcium, chloride, magnesium, potassium, sodium, and sulfate), salinity indicators (total dissolved solids and specific conductance), and sediment (total suspended solids and suspended sediment concentration). The child items include the input and output data used in the modeling and testing of water-quality... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Delaware, Delaware Basin, Delaware River, Delaware River Basin, Major ions, All tags... Maryland, New Jersey, New York, Pennsylvania, Seasonal Kendall trend test (SKT), USGS Science Data Catalog (SDC), Water Quality, Water Quality Parameters, Water-quality trends, Weighted regressions on time, discharge and season (WRTDS), environment, nutrient content (water), salinity, suspended material (water), water quality, water resources, Fewer tags Multisource surface-water-quality data for the Delaware River Basin Jointly managed by multiple states and the federal government, there are many ongoing efforts to characterize and understand water quality in the Delaware River Basin (DRB). Many State, Federal and non-profit organizations have collected surface-water-quality samples across the DRB for decades and many of these data are available through the National Water Quality Monitoring Council's Water Quality Portal (WQP). In this data release, WQP data in the DRB were harmonized, meaning that they were processed to create a clean and readily usable dataset. This harmonization processing included the synthesis of parameter names and fractions, the condensation of remarks and other data qualifiers, the resolution of duplicate... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Delaware, Delaware Bay, Delaware River Basin, Maryland, New Jersey, All tags... New York, Pennsylvania, bacteria, environment, field parameters, nutrients, salinity, sediment, water quality, Fewer tags Data to Incorporate Water Quality Analysis into Navigation Assessments as Demonstrated in the Mississippi River Basin This data release includes estimates of annual and monthly mean concentrations and fluxes for nitrate plus nitrite, orthophosphate and suspended sediment for nine sites in the Mississippi River Basin (MRB) produced using the Weighted Regressions on Time, Discharge, and Season (WRTDS) model (Hirsch and De Cicco, 2015). It also includes a model archive (R scripts and readMe file) used to retrieve and format the model input data and run the model. Input data, including discrete concentrations and daily mean streamflow, were retrieved from the National Water Quality Network (https://doi.org/10.5066/P9AEWTB9). Annual and monthly estimates range from water year 1975 through water year 2019 (i.e. October 1, 1974 through... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Atchafalaya River, Illinois River, Iowa River, Mississippi River, Mississippi River Basin, All tags... Missouri River, Nitrate plus nitrite, Ohio River, Orthophosphate, Suspended sediment concentration, USGS Science Data Catalog (SDC), Water Quality, Water quality, Weighted Regressions on Time, Discharge, and Season, Fewer tags Data supporting a spatiotemporal trend analysis of specific conductivity, streamflow, and landscape attributes of selected sub-basins within the Delaware River watershed, 1980 to 2018 This data release makes available three data tables supporting a spatiotemporal analysis of riverine conductivity and streamflow trends within the Delaware River Basin. The listed datasets include baseflow and total flow time series for selected gaged basins, watershed attributes, water quality information and trend analysis results. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Baseflow, Deicing, Delaware River, Delaware River Basin, Groundwater, All tags... Legacy, Road salt, Specific conductivity, Stream flow, USGS Science Data Catalog (SDC), climatologyMeteorologyAtmosphere, environment, none, transportation, Fewer tags