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Percent impervious surface for selected Chesapeake Bay watersheds This dataset contains watershed means of estimated percent impervious surfaces for three time periods: 1992, 2002, and 2012. Estimates are based on coefficients derived from comparing land use of the 2012 NAWQA Wall-to-wall Anthropogenic Land-use Trends (NWALT) product to the 2011 National Land Cover Database (NLCD) imperviousness, then applying those coefficients to previous years (1974-2002) of the NWALT dataset. Categories: Data; Types: Citation; Tags: Chesapeake Bay, Delaware, District of Columbia, James River, Maryland, All tags... New York, Pennsylvania, Potomac River, Rappahannock River, Susquehanna River, Virginia, West Virginia, impervious surfaces, surface water quality, Fewer tags 1) Best management practice implementation in the Chesapeake Bay watershed from 1985 to 2014 This metadata record documents 11 comma delimited tables representing the amount of reported best management practice (BMP) implementation for the years from 1985 to 2014 at three geographic scales: county or land-river modeling segment, River Input Monitoring (RIM) station drainage areas, and the entire Chesapeake Bay Watershed (CBWS). Data originated from the Chesapeake Bay Watershed jurisdictions including Maryland, Pennsylvania, Virginia, Delaware, New York, West Virginia, and the District of Columbia. Data were reported to the Chesapeake Bay Program for an annual review of progress toward meeting nitrogen, phosphorus, and sediment reduction goals. Categories: Data; Tags: Animal, Appomattox River, BMP, Best management practice, Chesapeake Bay, All tags... Chesapeake Bay watershed, Choptank River, Conservation practice, Delaware, District of Columbia, Isolation scenarios, James River, Land use, Land use change, Load reduction, Maryland, Mattaponi River, New York, Nitrogen, Non-RIM Eastern Shore, Non-RIM Western Shore, Nutrient sources, Pamunkey River, Patuxent River, Pennsylvania, Phosphorus, Potomac River, Rappahannock River, Sediment, Susquehanna River, USA, United States, Virginia, Watershed Model, West Virginia, Fewer tags Promoting Change in Common Tern (Sterna hirundo) Nest Site Selection to Minimize Construction Related Disturbance These data describe the status of eggs in nests which had a foster egg added to them as part of an effort to relocate a common tern colony on Poplar Island. One data file (McGowanEtAl2018_FosterNestData_Data.csv) contains the data regarding the observations, while one definitions file (McGowanEtAl2018_FosterNestData_Definitions.csv) details the data. Categories: Data; Tags: Birds, Chesapeake Bay, Chesapeake Bay, Ecology, Species Biology, All tags... USGS Science Data Catalog (SDC), Wildlife Biology, Wildlife Biology, nesting behavior, Fewer tags Data describing the use of retention ponds on commercial poultry facilities on Delmarva by wild waterfowl These data support a paired USGS publication and document the use of retention ponds on commercial poultry farms by wild waterfowl. Categories: Data; Tags: Chesapeake Bay, USGS Science Data Catalog (SDC), Wildlife Disease, avian influenza, biota, All tags... domestic poultry, wild waterfowl, Fewer tags Chesapeake Bay Nontidal Network 2005-2014: Average Yields Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in rivers across the Chesapeake Bay watershed have been calculated using monitoring data from the nine Chesapeake Bay River Input Monitoring (RIM) stations for the period 1985 through 2015. Nutrient and suspended-sediment loads and changes in loads were determined by applying a weighted regression approach called WRTDS (Weighted Regression on Time, Discharge, and Season). Yields (represents the mass of constituent transported from a unit area of a given watershed) are used to compare the export loads from one basin to another. Yield results are obtained by dividing the annual load (pounds) of a given constituent by the respective watershed... Categories: Data; Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chesapeake Bay, load analysis, nitrogen, nutrient content, phosphorus, All tags... suspended sediment, water quality, Fewer tags Water levels (November 11 2016 through November 11 2017) for four wells and Light intensity data (October 1 2015 through September 2019): from marsh to upland forest, for Moneystump Marsh, Blackwater National Wildlife Refuge, Maryland Water levels in meters from four wells in Moneystump marsh at Blackwater National Wildlife Refuge, MD. Two wells are located in the upland forest; one well is located in the marsh-forest transition zone (ecotone); and one well is located in the marsh. Water depth of the adjacent creek is reported in meters. Data covers the time span from November 11 2016 - November 11 2017. Pressure transducer data from the wells corrected to water level using barometric pressure loggers located in 3 locations throughout the experiment. Water levels are in units of meters referenced to vertical datum NAVD88. Raw pressure data is in units of kilopascals (kPa). Pressure transducer locations and elevation data from GNSS and digital... Categories: Data; Tags: Blackwater National Wildlife Refuge, Chesapeake Bay, Climatology, Coastal Wetlands, Coastal and Estuarine, All tags... Habitat Management, Hydrology, Land Use Change, Salt Marsh, Sea-level Change, Sea-level Rise, USGS Science Data Catalog (SDC), groundwater level, light intensity, utilities Communication, Fewer tags Animal Best Management Practice by Chesapeake Bay Watershed Region from 1985 to 2014 This metadata record covers 18 comma delimited files that support the USGS Scientific Investigations Report 2018-5022 Manure and Fertilizer Inputs to Land in the Chesapeake Bay Watershed, 1950-2014 by Jennifer Keisman, Olivia Devereux, Andrew LaMotte, Andrew Sekellick, and Joel Blomquist. The data were created by running scenarios through the Chesapeake Bay Program Partnership Phase 5.3.2 Watershed Model for years between 1985 and 2014. Scenarios include data with the reported Best Management Practice (BMP) for each year, as well as scenarios with no BMPs for each year. Data include summaries of the amount of land use change and animal BMPs reported as implemented for each year. Data originated with the Chesapeake... Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: BMP, Best Management Practice, Chesapeake Bay, Geography, Land Use Change, All tags... USGS Science Data Catalog (SDC), Water Quality, Water Resources, Fewer tags Elevation of marsh units in Blackwater salt marsh complex, Chesapeake Bay, Maryland Note: The 2022 data release "Geospatial Characterization of Salt Marshes in Chesapeake Bay" incorporates the Blackwater region salt marsh dataset. (https://doi.org/10.5066/P997EJYB) This data release contains coastal wetland synthesis products for the geographic region of Blackwater salt marsh complex, Chesapeake Bay, Maryland. Metrics for resiliency, including unvegetated to vegetated ratio (UVVR), marsh elevation, and others, are calculated for smaller units delineated from a digital elevation model, providing the spatial variability of physical factors that influence wetland health. The U.S. Geological Survey has been expanding national assessment of coastal change hazards and forecast products to coastal wetlands... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Blackwater National Wildlife Refuge, Chesapeake Bay, Dorchester County, Fishing Bay, Honga River, All tags... Maryland, Nanticoke River, United States, Wicomico County, coastal ecosystems, coastal processes, elevation, environment, estuary, geospatial datasets, inlandWaters, marsh health, oceans, salt marsh, vegetation, wetland ecosystems, wetland functions, Fewer tags Depth to Quaternary regional unconformities offshore of the Delmarva Peninsula, including Maryland and Virginia state waters Geologic structure and isopach maps were constructed by interpreting over 19,890 trackline kilometers of co-located multichannel boomer, sparker and chirp seismic reflection profiles from the continental shelf of the Delmarva Peninsula, including Maryland and Virginia state waters. In this region, Brothers and others (2020) interpret 12 seismic units and 11 regional unconformities. They interpret the infilled channels as Late Tertiary and Quaternary courses of the Susquehanna, Potomac, Rappahannock, York and James Rivers and tributaries, in addition to a broad drainage system. These regional unconformities form a composite unconformity interpreted as the Quaternary-Tertiary (Q-T) unconformity. A depth to Tertiary... Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: 32-bit GeoTIFF, Applied Acoustics S-Boom Source, Assateague Island, Assateague Island National Seashore, Atlantic Ocean, All tags... BOEM, Bureau of Ocean Energy Management, CMHRP, Chesapeake Bay, Chincoteague Bay, Chincoteague Bight, Chincoteague Inlet, Chincoteague Island, Chincoteague National Wildlife Refuge, Coastal and Marine Hazards and Resources Program, Cobb Island, Delaware, Delmarva Peninsula, Fisherman Island, Geologic Framework, Geometrics 16-channel Geoeel Streamer, Hog Island, Holocene, Holocene, Interpretation, James River, Marine Geology, Maryland, Maryland Energy Administration, Maryland Wind Energy Area, Myrtle Island, Parramore Island, Persimmons Point, Pleistocene, Potomac River, Quaternary, Rappahannock River, Sea floor, Seismic Interpretation, Seismic-reflection Profiles, Ship Shoal Island, Smith Island, Susquehanna River, Tertiary, U.S. Geological Survey, USGS, Unconformity, Virginia, WHCMSC, Wallops Island, Woods Hole Coastal and Marine Science Center, Wreck Island, geologic contacts, geoscientificInformation, geospatial datasets, imageryBaseMapsEarthCover, marine geology, oceans, scientific interpretation, Fewer tags Shenandoah Valley Stream Survey (2021) U. S. Geological Survey (USGS) scientists completed a stream surveying campaign from the 26th of July to the 13th of August in 2021 at thirty 100m reaches within the Shenandoah Valley throughout Virginia and West Virginia. The goal was to collect three cross sections, water surface elevation at the top and bottom of each reach, and thalweg point data at each study location to use the geomorphological surveys alongside habitat information. Together, these two sources of data can be used to create a habitat assessment of Shenandoah Valley streams. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Categories: Data; Tags: Chesapeake Bay, Chesapeake Bay, GPS measurement, Shenandoah Valley, U.S. Geological Survey, All tags... USA, Virginia, West Virginia, agriculture, dendrochronology, environmental health (human), erosion, geography, geomorphology, geoscientificInformation, habitat, hydrology, inlandWaters, riparian, river reaches, stream survey, streams, transect sampling, usgs, Fewer tags Input and predictions from a suspended-sediment SPARROW model CBSS_V2 in the Chesapeake Bay watershed These data represent input and estimates from a medium-resolution (1:100,000 scale) NHDPlus SPAtially Referenced Regression on Watershed attributes (SPARROW) model for the Chesapeake Bay watershed (CBSS_v2). The model spatially correlates long-term mean annual suspended-sediment flux in 113 non-tidal streams to likely upland and stream-corridor sources, landscape factors affecting upland sediment transport and delivery to stream corridors, and fluvial and reservoir retention representing the early 2000 time period. The item COMID is a common related field between the data file and the spatial component (catchments) in NHDPlus version 1.0. Categories: Data; Tags: "Chesapeake Bay", "SPARROW Model", "Sediment Load", "Sediment Sources", "Sediment Yield", All tags... "Suspended Sediment", Chesapeake Bay, Geomorphology, USGS Science Data Catalog (SDC), Water Quality, Water Resources, transport, Fewer tags Reservoir storage for selected Chesapeake Bay watersheds This dataset contains values of normal reservoir storage in units of acre-feet per km2, for three time periods: 1992, 2002, and 2012. Values are derived from a slightly-modified version of the National Inventory of Dams (NID) 2013 dataset, for which approximately 10% of records had the dam completion date estimated. Categories: Data; Types: Citation; Tags: Chesapeake Bay, Delaware, District of Columbia, James River, Maryland, All tags... New York, Pennsylvania, Potomac River, Rappahannock River, Susquehanna River, Virginia, West Virginia, dams, reservoir storage, surface water quality, Fewer tags Data Release: Peat collapse and vegetation shift after storm-driven saltwater surge in a tidal freshwater swamp, vegetation This dataset documents the water quality in depth, salinity, and pH as well as the vegetation found in the freshwater swamps of Hickory Point State Forest near Pocomoke City, Maryland from 2013 to 2021. Categories: Data; Tags: Botany, Chesapeake Bay, Ecology, Forested Wetland, Hickory Point State Forest, All tags... Maryland, Pocomoke City, Pocomoke River, Relict Tidal Inlet, USGS Science Data Catalog (SDC), United States, Water Quality, biota, climate change, droughts, freshwater ecosystems, freshwater swamp, global warming, regime shift, relict forest, wetlands, Fewer tags Estimated effect of best management practice implementation on water quality in the Chesapeake Bay watershed from 1985 to 2014 This metadata record documents 3 sets of comma delimited tables representing the amount of reported best management practice (BMP) implementation within the Chesapeake Bay watershed as well as output data from scenarios of the Chesapeake Bay Program Phase 5.3.2 Watershed Model. The scenario data were used to estimate the effects of BMPs on water quality. The data are organized by three themes (child items below); 1) BMP implementation and definitions, 2) isolation scenarios, and 3) "Progress" and "No Action" scenarios. Categories: Data; Tags: Animal, Appomattox River, BMP, Best management practice, Chesapeake Bay, All tags... Chesapeake Bay watershed, Choptank River, Conservation practice, Delaware, District of Columbia, Isolation scenarios, James River, Land Use Change, Land use, Land use change, Load reduction, Maryland, Mattaponi River, New York, Nitrogen, Non-RIM Eastern Shore, Non-RIM Western Shore, Nutrient sources, Pamunkey River, Patuxent River, Pennsylvania, Phosphorus, Potomac River, Rappahannock River, Sediment, Susquehanna River, USA, USGS Science Data Catalog (SDC), United States, Virginia, Water Quality, Watershed Model, West Virginia, Fewer tags “ChesBay 24k – LU": Land Use/Land Cover Related Data Summaries for the Chesapeake Bay Watershed Within NHD Plus HR catchments These tabular data are summaries of land use/land cover related variables within catchments of the Chesapeake Bay watershed using the Xstrm methodology at 1:24,000 scale. Variables being counted as land use/land cover related contain all land use and land cover data including datasets that are split off or combined from those data (eg. agriculture or impervious classes only datasets). Outputs consist of tabular comma-separated values files (CSVs) for both the local catchment and network summaries linked to the National Hydrography Dataset Plus High-Resolution (NHDPlus HR) framework by NHDPlus ID. Local catchments are defined as the single catchment the data is summarized within. Network accumulation summaries were... Categories: Data; Tags: Agriculture, Aquatic Biology, Catchment, Catchments, Chesapeake, All tags... Chesapeake Bay, Chesapeake Bay Watershed, Delaware, District of Columbia, Ecology, Ecology, Forest, Geographic Information Systems, Geography, Geography, Hydrography, Hydrologic network, Hydrology, Hydrology, Impervious Surfaces, Land Use Change, Land Use Change, Land Use/ Land Cover, Lower Chesapeake Bay, Maryland, National Hydrography Dataset Plus, National Hydrography Datasets High Resolution, New York, Pennsylvania, Remote Sensing, Remote Sensing, Stream / River, USGS Science Data Catalog (SDC), United States, Upper Chesapeake Bay, Virginia, Water Resources, Water Resources, West Virginia, barren lands, cities, geospatial datasets, hydrographic datasets, hydrographic features, inlandWaters, Fewer tags Discharge measurements, air temperature, water temperature, and gage height data for select stream monitoring locations across Delmarva Peninsula (2022) As part of a larger study examining stream conditions and the effect of Best Management Practices in the Chesapeake Bay watershed, thirty small streams on the Delmarva Peninsula were instrumented and monitored for gage height (water level), water temperature, and air temperature using Onset HOBO sensors from March to September 2022. In addition, two discrete discharge measurements were made at baseflow at each site. This data release contains four .csv files with time-series for gage height, water temperature, and air temperature for all thirty monitoring locations and a table of discrete discharge measurements and associated field measurement metadata: Delmarva_2022_Continuous_Air_Temperature.csv Delmarva_2022_Continuous_Gage_Height.csv... Categories: Data; Tags: Chesapeake Bay, Climatology, Delaware, Earth sciences, Hydrology, All tags... Maryland, USGS Science Data Catalog (SDC), Water Quality, data release, hydrology, inlandWaters, transect sampling, Fewer tags Nitrogen, Phosphorus, and Suspended-Sediment Loads and Trends measured in Nine Chesapeake Bay Tributaries: Trends in Annual Loads, Water Years 1985 - 2015 Nitrogen, phosphorus, and suspended-sediment loads, and changes in loads, in rivers across the Chesapeake Bay watershed have been calculated using monitoring data from the nine Chesapeake Bay River Input Monitoring (RIM) stations for the period 1985 through 2015. Nutrient and suspended-sediment loads and changes in loads were determined by applying a weighted regression approach called WRTDS (Weighted Regression on Time, Discharge, and Season). The load results represent the total mass of nitrogen, phosphorus, and suspended sediment that was exported from each of the nine RIM watersheds. When summed, the loads from the nine RIM stations represents the total load delivered from nearly eighty-percent of the bay watershed.... Categories: Data; Types: Citation; Tags: Chesapeake Bay, Nitrogen Trends, Phosphorus Trends, Suspended Sediment Trends, Water Quality Data describing the effects of elastic leg-loop harnesses on adult and juvenile Common Terns These data describe the affects of elastic leg-loop harnesses on the reproductive success and behavior of adult Common Terns and the growth and behavior of juvenile Common Terns. These data support a USGS authored manuscript. Categories: Data; Tags: Chesapeake Bay, Common Tern, Ecology, Poplar Island, USGS Science Data Catalog (SDC), All tags... Wildlife Biology, Wildlife Biology, behavior, biologging, biota, leg-loop harness, transmitter effects, Fewer tags Data regarding the efficacy of management practices for controlling gull use of Common Tern nesting colonies These data, which support a paired USGS publication, describe the efficacy of several management practices for reducing the presence of herring gulls in the nesting colonies of Common Terns. This data was collected on Poplar Island, located in the Chesapeake Bay portion of Maryland. Categories: Data; Tags: Chesapeake Bay, Common Tern, Herring Gull, USGS Science Data Catalog (SDC), Wildlife Biology, All tags... Wildlife Management, biota, Fewer tags Inputs and Selected Predictions of the CBTN_v5 and CBTP_v5 SPARROW Models for the Chesapeake Bay Watershed The CBTN_v5 and CBTP_v5 SPARROW models were developed to support inferences about causes of observed changes in nitrogen and phosphorus (respectively) fluxes in Chesapeake Bay tributaries between 1992 and 2012. Model inputs and outputs are included in three files, which are described below. Detailed documentation of the SPARROW modeling technique is available at https://pubs.er.usgs.gov/publication/tm6B3. Categories: Data; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Chesapeake Bay, National Water Quality Program, USGS Science Data Catalog (SDC), nutrients 1 2 3 4 5 6 »