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Data Supporting Analysis of Relations Between Nutrient Concentrations in the Herring River on the Ebb Tde, Near Wellfleet, Massachusetts and Environmental Conditions, 2015- 2022 This data release supports analyses of the relations between monthly average nutrient concentrations in the Herring River on the ebb tide near Wellfleet Massachusetts and monthly average precipitation, temperature, runoff, solar radiation, ocean water temperature, mean sea level, nutrient concentrations in Wellfleet Harbor, and atmospheric deposition of nitrogen 2015-2021. The Environmental_Variables.csv file contains the monthly average precipitation, temperature, runoff, solar radiation, ocean water temperature, mean sea level, nutrient concentrations in Wellfleet Harbor, and atmospheric deposition of nitrogen data. The Velocity_andgage_height.csv file contains the data on surface water velocity that were used... Categories: Data; Tags: Cape Cod, Massachusetts, Herring River Watershed, Wellfleet, Massachusetts, USGS Science Data Catalog (SDC), Water Quality, biota, All tags... nutrients, suspended sediments, water quality, Fewer tags Total and Dissolved Organic Carbon Data to Support Implementation of Revised Freshwater Aluminum Water-Quality Criteria in Massachusetts This data set contains historical data on concentrations of total and dissolved organic carbon in Massachusetts streams from the U.S. Geological Survey National Water Information System (NWIS) database. The data were compiled from NWIS using site and sample selection criteria to retrieve all publicly available data from surface-water samples that contained analysis of both total and dissolved organic carbon. The data set was screened, as much as possible from the site and sample description information in NWIS, to retain only routine environmental samples from stream sites. The final data set consists of 223 samples from 52 sites and were collected from 1978 to 2007. Categories: Data; Tags: Massachusetts, USGS Science Data Catalog (SDC), Water Quality, surface water quality Baseline groundwater-quality data from a densely developed coastal neighborhood, Falmouth, Massachusetts (2016 - 2021) (ver. 4.0, February 2022) This data release provides a comprehensive dataset of sampling-site characteristics and baseline groundwater-quality data collected from a network of multilevel sampling wells installed in a densely developed coastal neighborhood undergoing a conversion from onsite septic systems to municipal sewering. Groundwater samples were collected during multiple events from a total of 227 well screens at 15 locations using a peristaltic pump between June 2016 and September 2021. Samples were collected and preserved following methods documented in the U.S. Geological Survey National Field Manual (variously dated) and Savoie and others (2012). This dataset provides well construction information, groundwater levels, water-quality... Categories: Data, Data Release - Revised; Tags: Falmouth, Mara Vista, Massachusetts, USGS Science Data Catalog (SDC), groundwater, All tags... groundwater quality, nutrient content, water-quality data, Fewer tags Data for Occurrence and Sources of Lead in Private Wells, Sturbridge, Massachusetts This dataset contains water-quality data, quality-control data, and input and output data for geochemical models that support the findings of a study of lead in drinking water in the Sturbridge, Massachusetts, study area. These data include major and trace element data for unfiltered and filtered (dissolved) samples collected from both taps and well heads at private well sites, and quality-control data, including blank sample data and replicate sample data. The computer program PHREEQC (Parkhurst and Appelo, 2013) was used with the water-quality data and the WATEQ4F thermodynamic database (Ball and Nordstrom, 1991) to calculate aqueous and surface speciation; mineral saturation index (SI=log (IAP/K), where IAP is... Categories: Data; Tags: Environmental Health, Geochemistry, Hydrology, USGS Science Data Catalog (SDC), Water Quality, All tags... Water Resources, Worchester County, Massachusetts, Sturbridge, Southbridge, Charlton, Dudley, lead, drinking water, private wells, geochemical modeling, isotopes, corrosivity, 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 Data used to model and map arsenic concentration exceedances in private wells throughout the conterminous United States for human health studies This data release contains data used to develop models and maps that estimate the probabilities of exceeding various thresholds of arsenic concentrations in private domestic wells throughout the conterminous United States. Three boosted regression tree (BRT) models were developed separately to estimate the probability of private well arsenic concentrations exceeding 1, 5, and 10 micrograms per liter (µg/L). A random forest (RF) model was developed to estimate the most probable arsenic concentration category (≤5, >5 to ≤10, or >10 µg/L). The models use arsenic concentration data from private domestic wells located throughout the conterminous United States and independent variables that are available as geospatial... Categories: Data; Tags: Environmental Health, Geochemistry, Hydrology, USGS Science Data Catalog (SDC), United States, All tags... Water Quality, arsenic, drinking water use, environment, environmental health (human), geoscientificInformation, groundwater quality, health, machine learning models, private wells, Fewer tags Nitrogen Loads, Yields, and Associated Field Data Collected During Baseflow Conditions and Site Attributes for Small Basins Draining to Long Island Sound During the spring and summer of 2022, the U.S. Geological Survey collected water-quality samples for nutrient analysis at 45 stations across the state of Connecticut and adjacent areas of New York and Rhode Island to better understand the groundwater discharge component of nitrogen loading to the Long Island Sound. The targeted stations were located in small drainage basins (less than 50 square kilometers) in the southern portion of the Long Island Sound watershed. Sites were selected randomly from groups based on expected drivers or controls on baseflow nitrogen loads. Factors used in the grouping included four metrics calculated for the upstream watershed: percent impervious cover, septic system density, percent... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Connecticut, Connecticut Coastal, Hydrology, Long Island Sound, New York, All tags... Rhode Island, USGS Science Data Catalog (SDC), Water Quality, Water Resources, groundwater and surface-water interaction, inlandWaters, nitrogen, nutrient content (water), stream discharge, Fewer tags Water-Quality Data for Discrete Samples and Continuous Monitoring on the Merrimack River, Massachusetts, June to September 2020 This data release includes water-quality data collected at up to thirteen locations along the Merrimack River and Merrimack River Estuary in Massachusetts. In this study, conducted by the U.S. Geological Survey (USGS) in cooperation with the Massachusetts Department of Environmental Protection, discrete samples were collected, and continuous monitoring was completed from June to September 2020. The data include results of measured field properties (water temperature, specific conductivity, pH, dissolved oxygen) and laboratory concentrations of nitrogen and phosphorus species, total carbon, pheophytin-a, and chlorophyll-a. These data were collected to assess selected (mainly nutrients) water-quality conditions in... Categories: Data; Tags: Amesbury, MA, Haverhill, MA, Lawrence, MA, Lowell, MA, Massachusetts, All tags... Merrimac, MA, Merrimack River, Methuen, MA, Newburyport, MA, Salisbury, MA, Tyngsborough, MA, USGS Science Data Catalog (SDC), Water Quality, continuous water-quality, datasets, discrete water-quality, environment, marine water-quality, surface water (non-marine), surface water-quality, water sampling, Fewer tags High-water mark data from Hurricane Sandy for the coastal areas of Connecticut, Rhode Island, and Massachusetts, October 29-30, 2012 High-water marks were collected following Hurricane Sandy, October 29-30, 2012, along the coastal areas of Connecticut, Rhode Island, and Massachusetts. Information on 371 high-water marks that were flagged following Hurricane Sandy is presented in this data release. The general information on the high-water marks presented includes site identification number, location, elevation, quality, type, and website links to the data. Of the 371 high-water marks flagged, 364 high-water marks were surveyed and 7 high-water marks were not found. The U.S. Geological Survey identified and flagged the high-water marks during October and November 2012 following Hurricane Sandy; and surveyed the marks during October and November... Categories: Data; Tags: Connecticut, Hurricane Sandy, Massachusetts, Rhode Island, USGS Science Data Catalog (SDC), All tags... Water Resources, coastal, floods, high-water mark, storm surge, Fewer tags Soil Frost at Sleepers River Research Watershed, Danville, Vermont Soil frost measurements have been made at Sleepers River Research Watershed starting in 1983. Measurements were made by U.S. Army Corps of Engineers Cold Regions Research and Engineering Laboratory from 1983 to 1993, followed by the U.S. Geological Survey from 1993 to the present. Measurements started at 5 sites and has increased to 10 sites. Sites range in elevation from 225 to 670 meters and are in a mix of field and forest types. Soil frost measurements are made with tubes filled with methylene blue solution; on freezing, the methylene blue remains in the liquid phase, yielding clear ice that marks the depth of soil frost (Ricard and others, 1976). Soil frost measurements typically are made 2 to 4 times a month... Categories: Data; Tags: Climatology, Danville, Vermont, USGS Science Data Catalog (SDC), Water Resources, biota, All tags... infiltration, runoff, snow depth, soil frost, Fewer tags Pilot Study of Per- and Polyfluoroalkyl Substances (PFAS) Infiltration to Shallow Groundwater Through Selected Soils in New Hampshire, 2023 In a study conducted by the U.S. Geological Survey (USGS) and the New Hampshire Department of Environmental Services, detectable concentrations of per- and polyfluoroalkyl substances (PFAS) were found in the soil at every site despite targeting locations with no known PFAS sources (Santangelo and others, 2022). The widespread distribution of PFAS concentrations in New Hampshire has since sparked critical interest into understanding whether recharge to groundwater contains significant concentrations of PFAS after infiltration through soils. To address this concern, the USGS implemented a pilot study designed to evaluate whether PFAS infiltrate through shallow soil into shallow groundwater. Five sites were selected... Categories: Data; Tags: Eastern United States, Environmental Health, Hydrology, New Hampshire, Northeast, All tags... PFAS, Soil Sciences, USGS Science Data Catalog (SDC), Water Quality, Water Resources, biota, chemical analysis, groundwater, hydrology, lysimeters, soil, Fewer tags Passive Seismic Horizontal-to-Vertical Spectral Ratio Measurements at Transportation Infrastructure Sites in New Hampshire, 2022 In 2022, the U.S. Geological Survey (USGS) in cooperation with the New Hampshire Department of Transportation (NHDOT) made 107 horizontal-to-vertical spectral ratio (HVSR) passive seismic geophysical measurements at four transportation infrastructure sites in New Hampshire to determine the benefits of HVSR as an enhancement to traditional geotechnical site characterizations performed by NHDOT. Typically, data are obtained from the subsurface during borings to characterize geotechnical properties but often borings are spaced hundreds of feet apart. Geotechnical site characterization guided by geophysical surveys (such as the HVSR method) between borings will help provide a more thorough characterization. By combining... Categories: Data; Tags: Canterbury, NH, Geophysics, Geophysics, Groundwater, Horizontal-to-Vertical Spectral Ratio (HVSR) Seismic, All tags... Lee, NH, New Hampshire, New London, NH, Passive Seismic, Slope failure, Troy, NH, USGS Science Data Catalog (SDC), environment, geoscientificInformation, transportation, Fewer tags Statewide survey of shallow soil concentrations of per- and polyfluoroalkyl substances (PFAS) and related chemical and physical data across New Hampshire, 2021 Per- and polyfluoroalkyl substances (PFAS) and related chemical and physical data are presented from 100 shallow soil sampling locations within the State of New Hampshire. Sites were randomly determined through an equal-area grid approach (Scott, 1990) targeting undisturbed areas, which included lands classified by the 2016 National Land Cover Database (Dewitz, 2019) as forested, shrubland, scrubland, grassland, herbaceous, wetlands, or barren land. Sampling sites were located at the closest point to the random location identified, where access and permission were available. To limit the potential for sampling results to be influenced by local releases of PFAS, a 500-meter buffer around parcels associated with known... Categories: Data; Tags: Environmental Health, New Hampshire, PFAS, Soil Sciences, USGS Science Data Catalog (SDC), All tags... Water Resources, soil chemistry, soil horizons, soil sciences, Fewer tags Water-quality data from the Providence Water Supply Board for tributary streams to the Scituate Reservoir (ver. 3.0, November 2023) Water-quality data were collected by the Providence Water Supply Board (PWSB) from tributaries in the Scituate Reservoir drainage area, October 1, 2017 through September 30, 2022 (water years 2018 through 2022). Water-quality samples were collected by the PWSB either monthly or quarterly at fixed stations on 38 tributaries in the Scituate Reservoir drainage area, Rhode Island. These data were used to calculate instantaneous loads and yields of constituents in reports by the U.S. Geological Survey. Water-quality samples were collected following a strict sampling schedule so that water-quality samples would be representative of various weather conditions. Samples were analyzed at the PWSB water-quality laboratory... Categories: Data; Tags: Bacteria, Chloride, Cranston, Drinking water use, Foster, All tags... Johnston, Nutrient content (water), Rhode Island, Scituate, Scituate Reservoir, Sodium, Surface water quality, Turbidity, USGS Science Data Catalog (SDC), Water pH, Water properties, Fewer tags Groundwater Age-Tracing Data and Models in a PFOA-Contaminated Bedrock Aquifer, North Bennington, Vermont We computed mean groundwater ages and age distributions at eight wells by calibrating lumped parameter models (LPMs) to concentrations of tracers (3H, CFCs, SF6) in samples using the computer program TracerLPM (Jurgens and others, 2012). We also measured 14C but all samples contained ancient carbonate from the limestone bedrock, and we were unable to resolve the atmospherically-derived 14C sufficiently to use it as a tracer. Tritium was below the detection level in two of the eight well-water samples, indicating the water was recharged prior to about 1950. Groundwater from the other six wells could be fitted to LPMs that were either piston flow models (PFM), exponential – piston flow models (EPM), or binary mixing... Categories: Data; Tags: Bennington, Dissolved gas, Geochemistry, Groundwater, Groundwater age, All tags... Hydrogeology, Lumped parameter modeling, New England, North Bennington, PFOA, Recharge temperature, USGS Science Data Catalog (SDC), Vermont, Water quality, Fewer tags Statistics for simulating structural stormwater runoff best management practices (BMPs) with the Stochastic Empirical Loading and Dilution Model (SELDM) This data release documents statistics for simulating structural stormwater runoff best management practices (BMPs) with the Stochastic Empirical Loading and Dilution Model (SELDM)(Granato, 2013). The U.S. Geological Survey (USGS) developed SELDM and the statistics documented in this report in cooperation with the Federal Highway Administration (FHWA) to indicate the risk for stormwater flows, concentrations, and loads to be above user-selected water-quality goals and the potential effectiveness of mitigation measures to reduce such risks. In SELDM, three treatment variables, hydrograph extension, runoff volume reduction, and water-quality treatment are modeled by using the trapezoidal distribution and the rank... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Best Management Practice (BMP), Ecology, Environmental Health, Event Mean Concentration, Federal Highway Administration, All tags... Hydrology, SELDM, Stochastic Empirical Loading and Dilution Model, USGS Science Data Catalog (SDC), Water Quality, environment, highway runoff, inlandWaters, runoff, stormwater, transportation, Fewer tags Data for Regression Models to Estimate Water Use in Providence, Rhode Island, 2014-2021 This data release contains input data and programs (scripts) used to estimate monthly water demand for retail customers of Providence Water, located in Providence, Rhode Island. Explanatory data and model outputs are from July 2014 through June 2021. Models of per capita (for single-family residential customers) or per connection (for multi-family residential, commercial, and industrial customers) water use were developed using multiple linear regression. The dependent variables, provided by Providence Water, are the monthly number of connections and gallons of water delivered to single- and multi-family residential, commercial, and industrial connections. Potential independent variables (from online sources) are... Categories: Data; Tags: Providence, Rhode Island, USGS Science Data Catalog (SDC), Water Resources, public supply water use, All tags... regression analysis, residential water use, water supply and demand, Fewer tags Concentrations of arsenic in water from public-supply and domestic wells in New Hampshire (2004-2006) Groundwater samples from public and private drinking water wells throughout the state of New Hampshire were analyzed for total Arsenic (As). Samples were collected after pH, specific conductivity, dissolved oxygen, and water temperature had met stabilization criteria as outlined in the USGS National Field Manual (United States Geological Survey 2005). The As analyses were carried out in the geochemistry laboratory in the Department of Earth Sciences at the University of New Hampshire (UNH). Not including replicate analysis, a total of 527 samples were analyzed via a hydride generator-inductively coupled plasma mass spectrometer (HG-ICP-MS) using a Cetac HGX-200 plumbed into a Nu Instruments Attom high-resolution... Categories: Data; Tags: Arsenic, Drinking Water, Groundwater, Hydrogeology, New Hampshire, All tags... USGS Science Data Catalog (SDC), Water Quality, Fewer tags Concentrations of Per- and Polyfluoroalkyl Substances (PFAS) in Lake-Bottom Sediments of Ashumet Pond on Cape Cod, Massachusetts, 2020 (ver. 2.0, February 2024) Lake-bottom sediment and associated quality-control samples were collected in August 2020 from one coring location (U.S. Geological Survey station 413756070321301, ASHUMET POND, MASHPEE MI-ASHPD-0011) in Ashumet Pond downgradient from a former fire-training area on Cape Cod, Massachusetts. The core was collected to determine if per- and polyfluoroalkyl substances (PFAS) were present in the bottom sediments of a lake known to have elevated concentrations of PFAS in surface water and groundwater (Tokranov and others, 2021), and whether the sediments could act as a continuous source of PFAS to the lake. Processing the sediment core entailed collection of discrete samples at intervals ranging from 1-5 centimeters (cm)... Categories: Data, Data Release - Revised; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Cape Cod, Eastern United States, Environmental Health, Falmouth, Hydrology, All tags... Mashpee, Massachusetts, PFAS, Sandwich, Sedimentology, USGS Science Data Catalog (SDC), Water Quality, chemical analysis, environment, grain-size analysis, hydrogeology, limnology, radiometric dating, sedimentation, vibracoring, Fewer tags Storm Event Dissolved Organic Carbon and Total Dissolved Nitrogen Concentrations and Yields for Precipitation, Throughfall, Stemflow, and Stream Water and Hourly Streamflow and Precipitation Record for the W-9 Catchment, Sleepers River Research Watershed, 2017 and 2018 (ver. 2.0, September 2022) This dataset describes water yields for precipitation, throughfall, and stemflow for 22 rain events within the 40.5-hectare (ha) forested W-9 catchment at Sleepers River, Vermont. Sampling occurred during the summer and fall of 2018. Dissolved organic carbon (DOC) and total dissolved nitrogen (TDN) concentrations are reported for each sampled event. The dataset also includes 5-minute catchment normalized runoff and the hourly precipitation record for 2017 and 2018 calendar years. Stream water chemistry for DOC and TDN are also included. Major ions and spectroscopic properties are also reported. First posted May 17, 2021, ver. 1.0 Revised September 2022, ver. 2.0 Categories: Data, Data Release - Revised; Tags: Dissolved organic carbon, Precipitation, Sleepers River Research Watershed, Stemflow, Throughfall, All tags... USGS Science Data Catalog (SDC), Fewer tags 1 2 3 4 »