Filters: Categories: Data (X) > Types: Map Service (X) > partyWithName: Victor L Roland (X)

Filters Date Range Past year (3) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (2) OGC Web Service (1) Types OGC WMS Layer (8) OGC WFS Layer (7) OGC WMS Service (5) Downloadable (2) Shapefile (2) Contacts Lower Mississippi-Gulf Water Science Center Kirk D Rodgers U.S. Geological Survey - ScienceBase Elena R Crowley-Ornelas Water Resources More... Categories Data Release - Revised (2) Tag Types Theme (7) Place (7) Harvest Set (6) USGS Scientific Topic Keyword (3) Tag Schemes None (3) USGS Thesaurus (3) Geographic names (2) N/A (1) Geographic Names Information System (GNIS) (1) View Results as: JSON ATOM CSV

Assessment of hydrologic alteration at 12-digit hydrologic unit code (HUC12) pour points in the southeastern United States, 1950 - 2009 Two methods of calculating hydrologic alteration were applied to modeled daily streamflow data for 9,201 12-digit hydrologic unit code (HUC12) pour points draining to the Gulf of Mexico (Robinson and others, 2020). The first method is a new modified method of calculating ecosurplus and ecodeficit called hydro change. For this project, ecosurplus and ecodeficit have been combined to assess overall hydrologic regime change. The second method is the confidence interval hypothesis test (Kroll and others, 2015). The first method is a means of quantifying hydrologic alteration while the second is a hypothesis test to simply determine if statistically significant alteration has occurred. Both methods are employed to determine... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alabama, Florida, Gulf Coast, Louisiana, Mississippi, All tags... RESTORE, Texas, USGS Science Data Catalog (SDC), United States, environmental flow, reference hydrology, southeast, streamflow, streamflow alteration, trend analysis, Fewer tags Ozark Plateaus seepage flow-line dataset, southern Missouri and northern Arkansas, 1982-2006 This dataset was compiled to summarize discharge measurements from several published groundwater and surface-water studies in the Ozarks of southern Missouri and northern Arkansas. The discharge measurements were part of numerous USGS studies to assess interaction between streams and groundwater aquifers. A gaining stream is described as a surface-water stream that gains water from the groundwater aquifer and a losing stream is described as a surface-water stream that loses water to the groundwater aquifer. This product is intended to be used in surface-water and groundwater investigations assessing water quantity, quality, and availability. The product includes flow-line data digitized along National Hydrography... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Groundwater Resources Program, Missouri, Ozark Aquifer System, Ozark Physiographic Province, Ozarks, Ozark Highlands, All tags... discharge, gaining streams, groundwater, hydrogeology, inlandWaters, karst, losing streams, seepage run, surface water, Fewer tags Data used in the creation of total phosphorus and total nitrogen SPARROW models for the state of Tennessee This data release consists of the data used to develop SPAtially Referenced Regression On Watershed(SPARROW) attributes models for estimating loads of total phosphorus and total nitrogen in Tennessee streams. These data support the publication containing the Tennessee SPARROW models results (Hoos and others, 2019) and include model input used in the South Atlantic-Gulf Drainages and Tennessee River Basin (SAGT) nutrient SPARROW models (Hoos and McMahon, 2009; Garcia and others, 2011) as well as model input for river basins in Tennessee not included in the domain of the published SAGT SPARROW models. Also included in this data release are model coefficients, the software required to execute the Tennessee SPARROW... Categories: Data, Data Release - Revised; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: USGS Science Data Catalog (SDC) Model input and output from Precipitation Runoff Modeling System (PRMS) simulation of the Red River basin 1981-2016 This data release contains input and output data from hydrologic simulations of streamflow conditions in the Red River Basin (RRB) using the Precipitation-Runoff Modeling System (PRMS). The RRB PRMS model predicts components of the water balance at 3065 hydrologic response units (HRU) and streamflow for 1614 stream segments within the model domain for the simulation period 1981 to 2016. The data release contains two shapefiles: (1) a map of HRUs in the model domain and (2) a map of stream segments in the model domain. In addition to the shapefiles, the data release includes files containing the calibrated parameters of the RRB PRMS model as well as model inputs and outputs. The model inputs are (1) climate data,... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Arkansas, Daymet, HRU, Hydrology, Louisiana, All tags... Oklahoma, PRMS, Red River Basin, Texas, USGS Science Data Catalog (SDC), WAUSP, model, streamflow modeling, Fewer tags Modeled daily salinity derived from multiple machine learning methodologies and Generalized Additive models for three salinity monitoring sites in Mobile Bay, northern Gulf of Mexico, 1980–2021 Results from Generalized Additive models (GAM), Random Forest models (RFM), and Cubist models (CUB) for three Dauphin Island Sealab (DIS) operated salinity sites in Mobile Bay are reported in this data release. These sites included Meaher Park (DIS:MHPA1), Middle Bay Lighthouse (DIS:MBLA1), and Dauphin Island (DIS:DPIA1). The constructed models predicted a 40-year daily salinity record from 1980 to 2021 at each site based on incomplete imputed salinity records and several explanatory variables. Explanatory variables included: daily streamflow from 8 United States Geological Survey (USGS) streamgages, daily minimum and maximum temperature, precipitation, vapor pressure, wind speed, wind direction, horizontal and... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Cubist model, Dauphin Island Sea Labs, Dauphin Island Sea Labs, Generalized Additive model, Gulf of Mexico, All tags... Gulf of Mexico, Hydrology, Mobile Bay, Modeling, Random Forest machine learning model, Salinity, USGS Science Data Catalog (SDC), Fewer tags Trend analysis results for sites used in RESTORE Streamflow alteration assessments Daily streamflow discharge data from 139 streamgages located on tributaries and streams flowing to the Gulf of Mexico were used to calculate mean monthly, mean seasonal, and decile values. Streamgages used to calculate trends required a minimum of 65 years of continuous daily streamflow data. These values were used to analyze trends in streamflow using the Mann-Kendall trend test in the R package entitled “Trends” and a new methodology created by Robert M. Hirsch known as a “Quantile-Kendall” plot. Data were analyzed based on water year using the Mann-Kendall trend test and by climate year using the Quantile-Kendall methodology to: (1) identify regions which are statistically similar for estimating streamflow characteristics;... Categories: Data, Data Release - Revised; Types: Map Service, OGC WMS Layer; Tags: Alabama, Florida, Gulf Coast, Gulf Coast, Gulf of Mexico, All tags... Louisiana, Mississippi, RESTORE, Southeastern United States, Texas, USGS Science Data Catalog (SDC), environmental flow, network optimization, reference hydrology, streamflow alteration, trend analysis, Fewer tags Supporting data and model outputs for hydrologic alteration modeling in the Pearl and Pascagoula river basins Anthropogenic hydrologic alteration threatens the health of riverine ecosystems. This study assesses hydrologic alteration in the Pearl and Pascagoula river basins using modeled daily streamflow. Machine learning was used to identify locations that have undergone statistically significant streamflow alteration, quantify the volume of the alteration, and predict alteration using cubist models. Statistically significant alteration was determined by hypothesis testing. The pre- and post-alteration flow duration curves were used to calculate the net change across 60 years. Cubist models were developed for both basins to predict hydrologic alteration and to identify important basin characteristics. This data release... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alabama, Florida, Gulf Coast, Hydrology, Louisiana, All tags... Mississippi, RESTORE, Texas, USGS Science Data Catalog (SDC), United States, Water Resources, cubist, hydrologic alteration, machine learning, model tree, southeast, streamflow, streamflow alteration, Fewer tags Ozark Plateaus seepage point dataset, southern Missouri and northern Arkansas, 1982-2006 This dataset was compiled to summarize discharge measurements from several published groundwater and surface-water studies in the Ozarks of southern Missouri and northern Arkansas. The discharge measurements were part of numerous USGS studies to assess interaction between streams and groundwater aquifers. A gaining stream is described as a surface-water stream that gains water from the groundwater aquifer and a losing stream is described as a surface-water stream that loses water to the groundwater aquifer. This product is intended to be used in surface-water and groundwater investigations assessing water quantity, quality, and availability. The product includes point data of discharge measurements digitized from... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Arkansas, Groundwater Resources Program, Missouri, Ozark Aquifer System, Ozark Physiographic Province, Ozarks, Ozark Highlands, All tags... discharge, gaining streams, groundwater, hydrogeology, inlandWaters, karst, losing streams, seepage run, surface water, Fewer tags