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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...
An extreme gradient boosting ensemble tree model predicting per- and polyfluoroalkyl substances (PFAS) occurrence in groundwater at the depths typical of the bottom of public and domestic drinking water supplies across the conterminous United States was developed. PFAS data used to train the model were collected between 2019 and 2022 by the U.S. Geological Survey National Water Quality Network, Groundwater and the California Groundwater Ambient Monitoring and Assessment Program – Priority Basin Project. This dataset contains concentrations of PFAS, volatile organic compounds (VOCs), pharmaceuticals, and tritium in groundwater, along with associated quality assurance and quality control data. Concentrations of VOCs...
Categories: Data;
Tags: Environmental Health,
Geochemistry,
Hydrology,
PFAS,
USGS Science Data Catalog (SDC),
The Little Sequatchie River and Pryor Cove Creek watersheds are located in southern Tennessee and drain the eastern escarpment of the Cumberland Plateau to the Sequatchie River. The Little Sequatchie River has the largest drainage area of any Sequatchie River tributary, with over 130 square miles in the topographic confines of the watershed. The hydrology of both watersheds has been largely altered by karst processes which have caused the majority of the streams to sink into the sub-surface, typically at the contact between the Mississippian Pennington Formation and the underlying Mississippian Bangor Limestone. A collaborative project between the U.S. Geological Survey and the U.S. Fish and Wildlife Service began...
Categories: Data;
Types: ArcGIS REST Map Service,
ArcGIS Service Definition,
Downloadable,
Map Service;
Tags: Bryant Cove,
Coppinger Cove,
Cumberland Plateau,
Grundy County,
Hydrology,
Counts and measurements were made on specimens of the Halloween darter (Percina crypta) and of the Blackbanded darter (Percina nigrofasciata, sensu lato). Data used in the original description of Percina crypta are included, in addition to counts (and in some cases measurements) for 66 additional Percina nigrofasciata from the Savannah, Altamaha, and upper Chattahoohee river systems, and 1 additional Percina crypta.
Categories: Data;
Tags: Aquatic Biology,
Genetics,
USGS Science Data Catalog (SDC),
biota,
structure
This data release contains data in support of "The Joint Effect of Changes in Impervious Cover and Climate on Trends in Floods: A Comparison of Panel and Single-Station Quantile Regression Approaches" (Over and others, 2025). It contains input and output data used to analyze the effect of impervious cover and climate changes on trends in floods using three regression approaches. The input consists of two files: "finalStationList.csv," which contains streamgage information for the 127 streamgages used in this study, and "regressionInput.csv," which contains data used as input into regressions for each streamgage. The output consists of "lm_trends.csv," "byStation-log10_ann_max_MWBM_Q.csv," and "FixedEffects-log10_ann_max_MWBM_Q.csv."...
These data are from a Distributed Acoustic Sensing (DAS) experiment in Arcata, CA, that was conducted jointly by the U.S. Geological Survey, Cal Poly Humboldt University, and Luna Inc. A Luna QuantX DAS interrogator was installed in the Arcata Police Station and connected to a fiber owned by Vero Communications that runs from Arcata to Eureka (Figure 1). The interrogator was installed on December 22nd, 2022, shortly after the December 20th, M6.4 Ferndale earthquake (see https://earthquake.usgs.gov/earthquakes/eventpage/nc73821036). This dataset covers much of the aftershock sequence including several earthquakes with magnitude >= 4, including the M5.4 earthquake on January 1st, 2023 (see https://earthquake.usgs.gov/earthquakes/eventpage/nc73827571)....
Categories: Data;
Tags: Arcata California,
Distributed Acoustic Sensing,
Earthquakes,
Eureka California,
Gorda,
This data release is for all native bee and plant records collected at four national parks in Maryland and Virginia, 2021 and 2022. The purpose of the study was to document the floral resources and native bees that depend on them within variously-managed park grasslands, with the goal of providing managers with information that will help them maximize pollinator habitat while concurrently meeting other management objectives. The zip file "Bee_and_Plant_Metadata_NPS2021-2022.7z" contains two metadata records: 1) "Battlefield_Bees_metadata_08.07.2024.xml" contains all native bee data, and 2. "Battlefield_Plants_metadata_08.07.2024.xml" contains all plant data.
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Maryland,
Transect Sampling,
USGS Science Data Catalog (SDC),
Virginia,
bees and wasps,
This dataset and model archive provides geochemical modeling input and selected output data used in simulations of seawater restoration on historically diked salt marshes. Biogeochemical changes resulting from seawater reintroduction were simulated using the computer program PHREEQC (Parkhurst and Appelo, 2013) to help support efforts to restore tidal flow and associated estuarine habitat to diked marshes, including the Herring River estuary in Wellfleet, Massachusetts, on Cape Cod. First, one-dimensional reactive transport models were developed and calibrated using data from Portnoy and Giblin (1997) microcosm experiments of sediment cores to better understand the associated timing and sequence of biogeochemical...
The U.S. Geological Survey (USGS), in partnership with several federal agencies, has developed and released five National Land Cover Database (NLCD) products over the past two decades: NLCD 1992, 2001, 2006, 2011, and 2016. The 2016 release saw landcover created for additional years of 2003, 2008, and 2013. These products provide spatially explicit and reliable information on the Nation’s land cover and land cover change. To continue the legacy of NLCD and further establish a long-term monitoring capability for the Nation’s land resources, the USGS has designed a new generation of NLCD products named NLCD 2019. The NLCD 2019 design aims to provide innovative, consistent, and robust methodologies for production of...
Data include the proportion of Florida's coastal islands (n = 2504) that are projected to be inundated from sea level rise (SLR), as well as a prediction of the depth of SLR that would inundate each island. Data include the proportion of Florida's islands predicted to still be above water in 2100 that are currently human-modified. Data also include a count of the number of terrestrial, nonvolant mammalian, reptilian, and amphibian species on a subset list of Florida's Species of Greatest Conservation Need (n = 85) that are vulnerable to sea level rise because some or all of their distribution occurs on Florida's islands.
Geochemical data were obtained to investigate the fate and transport of nitrogen in a subterranean estuary near East Falmouth, Massachusetts. The goal of this investigation was to assess nitrogen attenuation in the aquifer under the Eel River estuary and the adjacent peninsula, introduced as inorganic nitrogen that was densely populated with residences havingfrom residential septic systems and legacy cesspool inputs of inorganic nitrogens. Groundwater-quality data were collected from three transects from a total of twenty-seven locations that were sampled between November 2015 and October 2016. Samples were analyzed for pH, dissolved oxygen, temperature, specific conductance, nitrate + nitrite, ammonium, total...
In the Prince William Sound region of Alaska, recent glacier retreat started in the mid-1800s and began to accelerate in the mid-2000s in response to warming air temperatures (Maraldo and others, 2020). Prince William Sound is surrounded by the Chugach Mountains and has numerous ocean-terminating glaciers, with rapid deglaciation increasingly exposing oversteepened bedrock walls of fiords. Rapidly moving rock avalanches (RAs) have the potential to generate tsunamis and adversely impact maritime vessels, marine activities, and coastal infrastructure and populations in the Prince William Sound region. RAs have been documented in the Chugach Mountains in the past (Post, 1967; McSaveney, 1978; Uhlmann and others, 2013),...
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