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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.
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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.
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The US Geological Survey, in cooperation with the National Park Service, mapped 35 7.5-minute quadrangles, within a 2-mile-wide+ corridor centered on the Parkway, from BLRI (Blue Ridge Parkway) Mile Post (MP) 0 near Afton, Virginia southward to MP 218 at Cumberland Knob, approximately 1.3 km south of the Virginia – North Carolina State Line. Detailed bedrock geologic mapping for this project was conducted at 1:24,000-scale by systematically traversing roads, trails, creeks, and ridges within and adjacent to the 2-mile-wide+ corridor along the 216.9-mile length of the BLRI in Virginia. Geologic data at more than 23,000 station points were collected during this project (September 2009 – February 2014), with approximately...
Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Adney Gap, Air Bellows Gap, Alligator Back Formation, Antietam Formation, Ashe Formation, All tags...
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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.
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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.
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The US Geological Survey, in cooperation with the National Park Service, mapped 35 7.5-minute quadrangles, within a 2-mile-wide+ corridor centered on the Parkway, from BLRI (Blue Ridge Parkway) Mile Post (MP) 0 near Afton, Virginia southward to MP 218 at Cumberland Knob, approximately 1.3 km south of the Virginia – North Carolina State Line. Detailed bedrock geologic mapping for this project was conducted at 1:24,000-scale by systematically traversing roads, trails, creeks, and ridges within and adjacent to the 2-mile-wide+ corridor along the 216.9-mile length of the BLRI in Virginia. Geologic data at more than 23,000 station points were collected during this project (September 2009 – February 2014), with approximately...
Types: Citation; Tags: Adney Gap, Air Bellows Gap, Alligator Back Formation, Antietam Formation, Ashe Formation, All tags...
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This dataset provides estimates of annual and seasonal precipitation for selected Chesapeake Bay watersheds. Season 1 is November-February; season 2 is March-June; and season 3 is July-October.
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This dataset contains values of soils, climate, hydrologic, topographic, and other geographic characteristics such as drainage area. These are considered "static" characteristics, which do not change over the time period of this study.
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The collection of LiDAR data for the James River basin began in 2010. The detailed surface elevation data will be used for conservation planning, design, research, delivery, floodplain mapping and hydrologic modeling utilizing LiDAR technology. The project area includes part of the James River watershed and adjacent areas in North and South Dakota. The project encompasses 16,825 sq miles and the 2010 phase of the project acquired 8,060 sq miles of LiDAR data and subsequent terrain data. This project represents the second phase with an objective to collect the remaining 8,765 square miles of the project area.
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This metadata record documents 2 comma delimited tables representing output from the Chesapeake Bay Program Phase 5.3.2 Watershed Model. The effect of best management practices (BMP) in 2014 in the Chesapeake Bay Watershed (CBWS) is estimated through a series of model scenarios that isolate the effect of individual BMPs. Data include a table describing the series of isolation scenarios and the summarized output of all scenarios. Scenario output include the estimated nitrogen, phosphorus, and sediment mass reductions for each BMP. Analysis of BMP implementation over time can provide insight to water quality restoration progress.
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This metadata report documents a shapefile of watershed boundaries for 84 selected United States Geological Survey (USGS) water quality stations that are part of the Chesapeake Bay non-tidal network (NTN).
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This metadata report documents a shapefile of 84 selected United States Geological Survey (USGS) water quality stations that are part of the Chesapeake Bay non-tidal network (NTN).
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The dataset contains estimates for total nitrogen and total phosphorus loads from point sources, combined sewer overflows, wastewater treatment plants that discharge to surface water for selected Chesapeake Bay watersheds. For source information, please refer to the process steps in this metadata report.
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These data report the percent of agricultural land, within each selected Chesapeake Bay watershed, that is enrolled in the Conservation Reserve Program (CRP), based on county-level data for each year from the U.S. Department of Agriculture Farm Service Agency.
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This dataset contains estimates of the yearly sum of total nitrogen and total phosphorus (hereafter referred to as nitrogen and phosphorus) inputs from fertilizer applications and from manure applications in selected Chesapeake Bay watersheds from 1985 through 2012.
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This metadata record documents a comma-delimited table representing scenario output from the Chesapeake Bay Program Phase 5.3.2 Watershed Model. The annual effect of best management practices (BMP) on water quality in the Chesapeake Bay Watershed (CBWS) is estimated through a series of model scenarios. The model output data tables for each year from 1985 to 2014 are included with estimated mass of nitrogen, phosphorus, and sediment. Each year has an output table for a “Progress” scenario, which is a model run with all BMPs active, and a “No Action” scenario, which is a model run with all BMPs deactivated. Model output is provided at the Watershed Model land-river segment scale.
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This dataset contains values of the Palmer Hydrological Drought Index (PHDI) for annual and seasonal periods from 1985-2012. Values are derived from data based on National Climatic Data Center (NCDC) climate divisions, of which there are 344 in the U.S.


    map background search result map search result map LiDAR Data Collection for the James River Watershed and Adjacent Areas in South Dakota and North Dakota Detailed geologic mapping geodatabase for the Blue Ridge Parkway in Virginia with station point photographs Detailed geologic mapping geodatabase for the Blue Ridge Parkway in Virginia Nutrient contributions from point sources, combined sewer overflows, and wastewater treatment plants for selected Chesapeake Bay watersheds Chesapeake Bay non-tidal network shapefiles for selected station locations Percent of land in agricultural production and developed for selected Chesapeake Bay watersheds Seasonal precipitation for selected Chesapeake Bay watersheds Nitrogen and phosphorus from fertilizer and manure for selected Chesapeake Bay watersheds Palmer Hydrological Drought Index (PHDI) values for selected Chesapeake Bay watersheds Static soils, climate, hydrologic, topographic, and geographic characteristics for selected Chesapeake Bay watersheds Reservoir storage for selected Chesapeake Bay watersheds Percent impervious surface for selected Chesapeake Bay watersheds Percent agricultural land enrolled in the Conservation Reserve Program for selected Chesapeake Bay watersheds Chesapeake Bay non-tidal network shapefiles for selected watershed boundaries Estimated effect of best management practice implementation on water quality in the Chesapeake Bay watershed from 1985 to 2014 1) Best management practice implementation in the Chesapeake Bay watershed from 1985 to 2014 3) Annual estimated effect of best management practice implementation on water quality in the Chesapeake Bay watershed from 1985 to 2014 2) Estimated effect of best management practice implementation on water quality in the Chesapeake Bay watershed from 1985 to 2014 Detailed geologic mapping geodatabase for the Blue Ridge Parkway in Virginia with station point photographs Detailed geologic mapping geodatabase for the Blue Ridge Parkway in Virginia Estimated effect of best management practice implementation on water quality in the Chesapeake Bay watershed from 1985 to 2014 1) Best management practice implementation in the Chesapeake Bay watershed from 1985 to 2014 2) Estimated effect of best management practice implementation on water quality in the Chesapeake Bay watershed from 1985 to 2014 Nutrient contributions from point sources, combined sewer overflows, and wastewater treatment plants for selected Chesapeake Bay watersheds Chesapeake Bay non-tidal network shapefiles for selected station locations Percent of land in agricultural production and developed for selected Chesapeake Bay watersheds Seasonal precipitation for selected Chesapeake Bay watersheds Nitrogen and phosphorus from fertilizer and manure for selected Chesapeake Bay watersheds Palmer Hydrological Drought Index (PHDI) values for selected Chesapeake Bay watersheds Static soils, climate, hydrologic, topographic, and geographic characteristics for selected Chesapeake Bay watersheds Reservoir storage for selected Chesapeake Bay watersheds Percent impervious surface for selected Chesapeake Bay watersheds Percent agricultural land enrolled in the Conservation Reserve Program for selected Chesapeake Bay watersheds Chesapeake Bay non-tidal network shapefiles for selected watershed boundaries 3) Annual estimated effect of best management practice implementation on water quality in the Chesapeake Bay watershed from 1985 to 2014 LiDAR Data Collection for the James River Watershed and Adjacent Areas in South Dakota and North Dakota