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DS-777 Spatial Location of Gages with Total Flow and estimated Base Flow, for the Predevelopment Simulation Period for the Northern High Plains Groundwater-Flow Model in Parts of Colorado, Kansas, Nebraska, South Dakota, and Wyoming These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. Baseflow is the portion of streamflow derived from groundwater flow. It is an important component of the groundwater budget, and can be estimated using known total streamflow at given points through time. Daily streamflow data was collected from 25 streamflow gaging stations across the northern High Plains Groundwater Availability Study (NHPGAS) area from the National Water Information System (NWIS) and the Nebraska Department of... Tags: Big Blue River, Calamus River, Cedar River, Dismal River, Elkhorn River, All tags... Frenchman Creek, Kansas, Lodgepole Creek, Loup River, Middle Loup River, NSDI, Nebraska, Niobrara River, North Loup River, North Platte River, Platte River, Republican River, South Dakota, South Loup River, USGS Science Data Catalog (SDC), baseflow, environment, geohydrology, geoscientificInformation, groundwater, groundwater availability, hydrologic models, inlandWaters, inlandWaters, northern High Plains, surface-groundwater relations, Fewer tags Spatial Coverage for Estimated Baseflow for Streams Containing Endangered Atlantic Salmon in Maine, USA (version 1.1, June 2022) The U.S. Geological Survey (USGS) developed a regression model for estimating mean August baseflow per square mile of drainage area in cooperation with National Oceanic and Atmospheric Administration (NOAA) to help resource managers assess relative amounts of baseflow in streams with Maine Atlantic Salmon habitat (Lombard and others, 2021). The model was applied to each reach of a stream network derived from select National Hydrography Dataset Plus High-Resolution (NHDPlusHR) data in the State of Maine south of 46º 21′55″ N latitude. The spatial coverage developed from the stream network contains model-estimated mean August baseflow per square mile of drainage area as an attribute of each NHDPlusHR reach. Please... Categories: Data, Data Release - Revised; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Atlantic, Atlantic Salmon, August, Distinct Population Segment, Hydrology, All tags... Maine, Maine, Salmon, USGS Science Data Catalog (SDC), Water Resources, baseflow, baseflow, environmental process, environmental proxies, fish, geographic information systems, groundwater, habitat, habitat, refugia, river ecosystems, scientific interpretation, streamflow, Fewer tags Nonlinear Baseflow Model Parameters for USGS and other Agency Gages (ver. 2.0, October 2022) Site-specific parameters for a non-linear baseflow separation model determined by automated calibration to maximize baseflow. The file "bf_param_usgs.csv" has parameter values for 13,208 sites where USGS operated a streamflow gage and calculated daily streamflow for at least 300 days from water year 1981 to 2020. The file "bf_param_wa_ecy.csv" has parameter values for 41 sites where the Washington Department of Ecology operated a streamflow gage from water year 1991 to 2019. The parameters may need to be re-calibrated at a site for some applications. Categories: Data; Tags: United States, baseflow, hydrograph separation, mathematical modeling, streamflow Non-linear baseflow separation model with parameters and results (ver. 2.0, October 2022) This data release provides source code and an R workspace with functions comprising a non-linear baseflow separation model, calibrated values of parameters and estimates of the baseflow component of daily streamflow at selected streamflow gages. Parameter values were determined by calibration of the model. Estimates of the baseflow component include daily values and the total baseflow as a fraction of streamflow for the analysis period. The file 'run_bf_sep.zip' in the directory 'Nonlinear Baseflow Model Source Code, Functions, and Scripts" has a complete set of model functions, parameters for 13,208 USGS streamflow gages, and a script to run the model. Instructions and software requirements for running the model... Categories: Data, Data Release - Revised; Tags: USGS Science Data Catalog (SDC), United States, baseflow, hydrograph separation, mathematical modeling, All tags... streamflow, Fewer tags Baseflow Time Series for Selected USGS Gages (ver. 2.0, October 2022) Daily estimates of baseflow derived from a non-linear, baseflow separation model. The file "baseflow_western_washington.csv" has daily baseflow estimates for 268 sites in western Washington for the period from water year 1981 to 2020 used for estimating groundwater recharge in lowland areas. The file "baseflow_rsqa.csv" has daily baseflow estimates for 462 sites that were sampled as part of the US Geological Survey Regional Stream Qualtiy Assessment (RSQA). Values are only provided for days when water samples were collected. Missing values indicate gaps in the streamflow record. Categories: Data; Tags: United States, baseflow, hydrograph separation, mathematical modeling, streamflow Monthly estimates of natural baseflow for 15,866 stream reaches, defined by the National Hydrography Dataset Plus Version 2.0 (NHDPlusV2), in the Delaware River Basin for the period 1950-2015 This metadata record describes monthly estimates of natural baseflow for 15,866 stream reaches, defined by the National Hydrography Dataset Plus Version 2.0 (NHDPlusV2), in the Delaware River Basin for the period 1950-2015. A statistical machine learning technique - random forest modeling (Liaw and Wiener, 2018; R Core Team, 2020) - was applied to estimate natural flows using about 150 potential predictor variables (Miller and others, 2018). Calibration data used for the random forest model are available from (Foks and others, 2020). Each model was run twice, first using all potential predictor variables, which represents a "full" model run, and a second time using the top 20 predictors from the original run, which... Categories: Data; Tags: Delaware, Delaware River Basin, Hydrology, National Hydrography Dataset Plus Version 2.0, New Jersey, All tags... New York, Pennsylvania, USGS Science Data Catalog (SDC), anthropogenic modification, baseflow, environmental impacts, geochemistry, geoscientificInformation, groundwater, hydrology, inlandWaters, natural flows, random forest modeling, random forests, river reaches, rivers/streams, streamflow, surface water hydrology, water resources, Fewer tags Datasets and scripts used for estimating streamflow and base flow within the nontidal Chesapeake Bay riverine system, water years 2006-15 This U.S. Geological Survey (USGS) data release contains estimated daily streamflow and base flow for HUC12 in the nontidal areas of the Chesapeake Bay watershed, monthly average streamflow and base flow, flow statistics, MATLAB scripts, and a document that describes how to create similar datasets in other watersheds. Daily streamflow was estimated for all the nontidal parts of the Chesapeake Bay watershed with the program "Unit Flows in Networks of Channels" (UFINCH; Holtschlag, 2016), together with the observations of measured streamflow at gages at the downstream ends of major rivers. The estimated streamflow was aggregated at the HUC12 level and reformatted as an Optimal Hydrograph Separation (OHS) input file... Categories: Data; Tags: Chesapeake Bay watershed, Delaware, Maryland, Pennsylvania, USGS Science Data Catalog (SDC), All tags... Virginia, Washington, DC, Water Quality, West Virginia, base flow, baseflow, datasets, geospatial datasets, groundwater, hydrograph separation, stream-gage measurement, streamflow, surface water (non-marine), Fewer tags Data for Model Estimated Baseflow for Streams Containing Endangered Atlantic Salmon in Maine, USA (version 1.1, July 2022) The U.S. Geological Survey (USGS) in cooperation with NOAA, developed a regression model for estimating August mean baseflow per square mile of drainage area to help resource managers assess relative amounts of baseflow in streams with Maine Atlantic Salmon habitat. The model was derived from August mean baseflows computed at 31 USGS streamgages in and near the Gulf of Maine Atlantic Salmon Habitat Recovery Units. An ordinary least squares regression model estimates August mean baseflow per unit drainage area using two explanatory variables: percentage of the basin underlain by sand and gravel aquifers, and the basin mean July precipitation. This model provides the means to estimate August mean baseflow in cubic... Categories: Data; Tags: Atlantic Salmon, Distinct Population Segment, Maine, USGS Science Data Catalog (SDC), baseflow, All tags... habitat, refugia, streamflow, Fewer tags Daily-timestep and monthly-timestep estimates of baseflow at 49 reference stream gages located within 25 miles of the Delaware River basin watershed boundary for the years 1950 through 2015 This USGS data release contains daily-timestep and monthly-timestep estimates of baseflow at 49 reference stream gages located within 25 miles of the Delaware River basin watershed boundary. Estimates are provided for the available period of record of streamflow data at each site between 1950 and 2015. A two-parameter recursive digital filter was used to estimate baseflow at the selected stream gaging stations using U.S. Geological Survey Groundwater Toolbox (Barlow and others, 2017; Eckhardt, 2005). References cited: Barlow, P.M., Cunningham, W.L., Zhai, T., and Gray, M., 2017, U.S. Geological Survey Groundwater Toolbox version 1.3.1, a graphical and mapping interface for analysis of hydrologic data: U.S. Geological... Tags: Delaware, Delaware River basin, Hydrology, New Jersey, New York, All tags... Pennsylvania, USGS Science Data Catalog (SDC), Water Quality, Water Resources, baseflow, estuary, hydrology, river reaches, streamflow, water resources, watershed, Fewer tags Streamflow, Runoff and Baseflow Estimates for Gaged Basins in the Northwest Volcanic Aquifer Study Area, USA, 1904 to 2015 The U.S. Geological Survey’s Water Availability and Use Study Program (WAUSP) (https://water.usgs.gov/ogw/gwrp/activities/regional.html) supports quantitative assessments of groundwater availability in areas of critical importance. As part of a WAUSP study in the arid to semi-arid Northwest Volcanic Aquifer Study Area (NVASA), estimates of runoff and baseflow were determined for 312 streamflow-gaging stations from 1904 to 2015. Gages with complete water years (October to September) of continuous-streamflow record were used to partition streamflow into runoff and baseflow, which is that part of streamflow attributed to groundwater discharge. For each water year annual estimates of baseflow, runoff, and a base-flow... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: California, GWToolbox, Hydrogeology, Idaho, NVASA, All tags... NVASA, Oregon, USGS Science Data Catalog (SDC), USGS Water Availability and Use Study Program, Water Resources, baseflow, hydrograph separation, inlandWaters, runoff, volcanic aquifers, Fewer tags Model code, input datasets, and prediction files for dynamic stream dissolved solids and static baseflow dissolved solids SPARROW models of the Upper Colorado River Basin, 1986-2017 This data release contains model code and input data for, and predictions from, both a dynamic stream dissolved solids and a static baseflow dissolved solids SPARROW (SPAtially Referenced Regression On Watershed attributes) model of the Upper Colorado River Basin for water years 1986-2017. Input data includes information on dissolved solids sources, landscape transport characteristics, and dissolved solids load calibration data from water quality monitoring stations. Model output includes predictions for every reach of total and incremental predicted loads and total and incremental loads from each source. Further details on model development and results are described in Miller and others, 2023. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Arizona, Colorado, New Mexico, SPARROW, USGS Science Data Catalog (SDC), All tags... Upper Colorado, Utah, Wyoming, baseflow, climate, dissolved solids, irrigated lands, none, salinity, streamflow, water quality, Fewer tags Nitrogen sources to and export from the Chesapeake Bay watershed, 1950 to 2050 This U.S. Geological Survey data release contains datasets that combine past data with future projections of nitrogen sources and nitrogen export to the Chesapeake Bay watershed for the years 1950-2050. To help understand the effect of human and environmental changes over this time period, data for nitrogen sources from wastewater, agricultural fertilizer and manure, and atmospheric deposition are combined with datasets of population and land use. These datasets were used in conjunction with a previously calibrated SPAtially Referenced Regression On Watershed attributes (SPARROW) modeling tool to estimate the mean annual loads of total nitrogen to the Chesapeake Bay and nontidal stream reaches in the watershed at... Tags: Chesapeake, Chesapeake Bay watershed, Delaware, District of Columbia, Environmental Health, All tags... Geochemistry, Hydrology, Land Use Change, Lower Chesapeake Bay, Maryland, New York, Pennsylvania, TMDL, USGS Science Data Catalog (SDC), Upper Chesapeake Bay, Virginia, Water Quality, West Virginia, agriculture, baseflow, climate change, effects of climate change, estuary, eutrophication, evaporation, fertilizer, groundwater, groundwater and surface-water interaction, groundwater quality, land cover change, land use change, manure, mathematical modeling, nitrate, nitrogen, point sources, runoff, stormwater, streamflow, surface water, surface water (non-marine), surface water quality, transpiration, urban areas, wastewater discharge, water quality, watershed, watershed management, Fewer tags Data set used to develop a conceptual framework for effectively anticipating water-quality changes resulting from changes in agricultural activities This USGS data release contains 2013 streamflow, baseflow, and precipitation data from three hydrologically-diverse streams in the United States used to develop a conceptual framework for effectively anticipating water-quality changes resulting from changes in agricultural activities. The framework combined generalized concepts on the movement of water, the environmental behavior of chemicals and eroded soil, and the designed functions of various agricultural activities. The framework addresses the impacts on water quality of a broad range of agricultural chemicals and sediment across a variety of hydrologic settings. • Chesterville Branch near Crumpton, Maryland, (USGS site ID - 01493112) had substantial baseflow... Categories: Data; Types: Citation; Tags: Indiana, Kansas, Maryland, National Water Quality Program, USGS Science Data Catalog (SDC), All tags... agricultural management practices, agriculture, base flow, baseflow, chemical sorptivity, chemical transformation, chemical transport, flowpath, groundwater, groundwater flow, groundwater quality, hydrologic transit times, sediment transport, sorption, water chemistry, water quality, Fewer tags Nonlinear Baseflow Model Source Code, Functions, and Scripts (ver. 2.0, October 2022) Source code, an R workspace with functions comprising a non-linear baseflow separation model, and a complete set of files to run the model in a compressed file including a script that will demonstrate how to run the model. Categories: Data; Tags: United States, baseflow, hydrograph separation, mathematical modeling, streamflow Baseflow Fractions at USGS Gages for Water Years 1981 to 2020 (ver. 2.0, October 2022) Simulated daily baseflow was summed from water year 1981 to 2020 and divided by observed streamflow at 13,208 sites where US Geological Survey operated a streamflow gage and calculated daily streamflow for at least 300 days. Days with negative flows (tidal systems) are not included. Categories: Data; Tags: United States, baseflow, hydrograph separation, mathematical modeling, streamflow Hydrologic data for the effects of forest cover on base flow of streams in the mountainous interior of Puerto Rico This U.S. Geological Survey (USGS) data release consists of daily mean base flow, daily precipitation and slug test data collected for a study to determine whether a relation exists between the extent of forest cover and the magnitude of base flow at two sets of paired drainage basins in the highlands of the municipalities of Adjuntas and Utuado within the mountainous interior of Puerto Rico. One set of paired basins includes the Río Guaónica and Río Tanamá, both tributaries of the Río Grande de Arecibo. The other set includes two smaller basins in the drainage basin of the Río Coabey, which is a tributary of the Río Tanamá. The paired basins in each set have similar rainfall patterns, geologic substrate, and aspect;... Categories: Data; Types: Citation; Tags: Adjuntas, Puerto Rico, Río Guaónica, Río Tanamá, USGS Science Data Catalog (SDC), All tags... Utuado, Water Resources, baseflow, Fewer tags DS-777 Spatial Location of Gages with Total Flow and estimated Base Flow, organized by Seasonal Stress Periods for the Development Simulation Period for the Northern High Plains Groundwater-Flow Model in Parts of Colorado, Kansas, Nebraska, South Dakota, and Wyoming These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. Baseflow is the portion of streamflow derived from groundwater flow. It is an important component of the groundwater budget, and can be estimated using known total streamflow at given points through time. Daily streamflow data was collected from 91 streamflow gaging stations across the northern High Plains Groundwater Availability Study (NHPGAS) area from the National Water Information System (NWIS) and the Nebraska Department of... Categories: pre-SM502.8; Tags: Big Blue River, Calamus River, Cedar River, Dismal River, Elkhorn River, All tags... Frenchman Creek, Kansas, Lodgepole Creek, Loup River, Middle Loup River, NSDI, Nebraska, Niobrara River, North Loup River, North Platte River, Northern High Plains, Platte River, Republican River, South Dakota, South Loup River, USGS Science Data Catalog (SDC), baseflow, environment, geohydrology, geoscientificInformation, groundwater, groundwater availability, hydrologic models, inlandWaters, inlandWaters, surface-groundwater relations, 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 Datasets and metadata for estimates of nitrate loads and yields from groundwater to streams in the Chesapeake Bay watershed based on land use and geology This USGS data release contains datasets, metadata, and figures associated with estimating nitrate loads and yields from groundwater to streams in the Chesapeake Bay watershed based on land use and geology. There are three shapefiles with associated metadata and figures representing the shapefiles: • Catchments_GWcontribN.shp: NHDPlus catchment estimates of groundwater contribution of nitrate to streams in the Chesapeake Bay watershed • HUC12_GWcontribN.shp: HUC 12 estimates of groundwater contribution of nitrate to streams in the Chesapeake Bay watershed • Sites_GWcontribN.shp: Sites with baseflow measurements for nitrate plus nitrite within the Chesapeake Bay watershed These data support the following publication:... Types: Citation; Tags: Chesapeake Bay, Delaware, District of Columbia, Maryland, National Water Quality Program, All tags... New York, Pennsylvania, USGS Science Data Catalog (SDC), Virginia, West Virginia, baseflow, groundwater, nitrate, water quality, Fewer tags