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Contour Farming on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice 330 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. This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the agricultural conservation practice (CP330), Contour Farming (CF) on agricultural land by county. Contour Farming is described as "tillage, planting, and other farming operations performed on or near the contour of the field slope." (U.S. Department of Agriculture, 1995) This data set was created with geographic information... Tags: Agricultural Practices, Conterminous United States, Contour Farming, NSDI, National Resources Inventory, All tags... USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, inlandWaters, Fewer tags Maryland Ground-Water Observation Well Network, 2001 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. MDNET is a point coverage that represents the locations and names of a network of observation wells for the State of Maryland. Additional information on water conditions at these sites can be found in the Ground-Water Site Inventory System (GWSI) database, which is maintained by the U.S. Geological Survey. Site information can be accessed on the internet at URL: Tags: Ground-water, Maryland, NSDI, Network, Observation well, All tags... USGS Science Data Catalog (SDC), Well, environment, geoscientificInformation, inlandWaters, inlandWaters, Fewer tags Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Average Annual Daily Maximum Temperature, 2002 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. This data set represents the average monthly maximum temperature in Celsius multiplied by 100 for 2002 compiled for every catchment of NHDPlus for the conterminous United States. The source data were the Near-Real-Time High-Resolution Monthly Average Maximum/Minimum Temperature for the Conterminous United States for 2002 raster dataset produced by the Spatial Climate Analysis Service at Oregon State University. The NHDPlus Version... Tags: Average monthly maximum temperature, CALI, COGB, California, Catchment, All tags... Conterminous United States, GLMR, Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy, Inlandwaters, LMTG, Lower Mississippi, Arkansas-White-Red, and Texas-Gulf, MORI, MRB, MRB1, MRB2, MRB3, MRB4, MRB5, MRB6, MRB7, MRB8, Major River Basin, Missouri, NAWQA, NEMA, NHDPlus, NSDI, New England and Mid-Atlantic, PANW, Pacific Northwest, Rio Grande, Colorado, and Great Basin, SAGT, SPARROW, South Atlantic-Gulf and Tennessee, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, Fewer tags Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: Level 3 Nutrient Ecoregions, 2002 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. This tabular data set represents the area of each level 3 nutrient ecoregion in square meters compiled for every MRB_E2RF1 catchment of the Major River Basins (MRBs, Crawford and others, 2006). The source data are from the 2002 version of the U.S. Environmental Protection Agency's (USEPA) Aggregations of Level III Ecoregions for National Nutrient Assessment & Management Strategy (USEPA, 2002). The MRB_E2RF1 catchments are based on... Tags: CALI, COGB, California, Catchment, Conterminous United States, All tags... GLMR, Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy, Inlandwaters, LMTG, Level 3 Nutrient Ecoregions, Lower Mississippi, Arkansas-White-Red, and Texas-Gulf, MORI, MRB, MRB1, MRB2, MRB3, MRB4, MRB5, MRB6, MRB7, MRB8, MRB_E2RF1, MRB_E2RF1WS, Major River Basins, Missouri, NAWQA, NEMA, NSDI, New England and Mid-Atlantic, PANW, Pacific Northwest, Rio Grande, Colorado, and Great Basin, SAGT, SPARROW, South Atlantic-Gulf and Tennessee, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, Fewer tags Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: Level 3 Ecoregions 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. This tabular data set represents the estimated area of level 3 ecological landscape regions (ecoregions), as defined by Omernik (1987), compiled for every MRB_E2RF1 catchment of the Major River Basins (MRBs, Crawford and others, 2006). The source data set is Level III Ecoregions of the Continental United States (U.S. Environmental Protection Agency, 2003). The MRB_E2RF1 catchments are based on a modified version of the U.S. Environmental... Tags: CALI, COGB, California, Catchment, Conterminous United States, All tags... GLMR, Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy, Inlandwaters, LMTG, Level 3 Ecoregions, Lower Mississippi, Arkansas-White-Red, and Texas-Gulf, MORI, MRB, MRB1, MRB2, MRB3, MRB4, MRB5, MRB6, MRB7, MRB8, MRB_E2RF1, MRB_E2RF1WS, Major River Basins, Missouri, NAWQA, NEMA, NSDI, New England and Mid-Atlantic, PANW, Pacific Northwest, Rio Grande, Colorado, and Great Basin, SAGT, SPARROW, South Atlantic-Gulf and Tennessee, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, Fewer tags Volatile Organic Compound and Other Analyses Associated with Laboratory Microcosm Experiments to Determine Biodegradation Rates in Fractured Sedimentary Rock at the Former Naval Air Warfare Center in West Trenton, New Jersey, 2016–18 This metadata record presents analytical results for laboratory microcosms conducted during 2016–18 as part of a study to develop a field test and numerical interpretation method to determine the effective diffusion coefficients and sorption coefficients of trichloroethene (TCE) and daughter products in the rock matrix of sedimentary rock, as well as biodegradation rate coefficients in the borehole. The biodegradation rate coefficients in the borehole are an important component of defining the back-diffusion of TCE from the matrix of sedimentary rock. Microcosm experiments were conducted with microbial community samples and groundwater collected from boreholes in the field test area to define anaerobic biodegradation... Categories: Data; Tags: Aquatic Biology, Geochemistry, Hydrology, New Jersey, TCE, All tags... USGS Science Data Catalog (SDC), Water Resources, back diffusion, biodegradation, borehole test, fractured rock, inlandWaters, trichloroethylene, trichlorofluoroethene, Fewer tags Attributes for MRB_E2RF1 Catchments in Selected Major River Basins of the Conterminous United States: Contact Time, 2002 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. This tabular data set represents the average contact time, in units of days, compiled for every MRB_E2RF1 catchment of Major River Basins (MRBs, Crawford and others, 2006). Contact time, as described in Vitvar and others (2002), is defined as the baseflow residence time in the subsurface. The source data set was the U.S. Geological Survey's (USGS) 1-kilometer grid for the conterminous United States (D.M. Wolock, U.S. Geological Survey,... Tags: CALI, California, Catchment, Contact time, Conterminous United States, All tags... GLMR, Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy, Inlandwaters, LMTG, Lower Mississippi, Arkansas-White-Red, and Texas-Gulf, MORI, MRB, MRB2, MRB3, MRB4, MRB5, MRB7, MRB8, MRB_E2RF1, MRB_E2RF1WS, Major River Basins, Missouri, NAWQA, NSDI, PANW, PANW, Pacific Northwest, Pacific Northwest, SAGT, SPARROW, South Atlantic-Gulf and Tennessee, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, Fewer tags National Land Cover Database 2001 (NLCD01) Imperviousness Layer Tile 3, Southwest United States: IMPV01_3 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. This 30-meter resolution data set represents the imperviousness layer for the conterminous United States for the 2001 time period. The data have been arranged into four tiles to facilitate timely display and manipulation within a Geographic Information System, browse graphic: nlcd01-partition. The National Land Cover Data Set for 2001 was produced through a cooperative project conducted by the Multi-Resolution Land Characteristics... Tags: Conterminous United States, Imperviousness, Inlandwaters, NAWQA, NLCD, All tags... NSDI, National Land Cover Data Set, National Water-Quality Assessment, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, land cover, land use, Fewer tags National Land Cover Database 2001 (NLCD01) Tile 1, Northwest United States: NLCD01_1 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. This 30-meter data set represents land use and land cover for the conterminous United States for the 2001 time period. The data have been arranged into four tiles to facilitate timely display and manipulation within a Geographic Information System see https://www.sciencebase.gov/catalog/file/get/631405cad34e36012efa3295?name=nlcd01-partitions.jpg. The National Land Cover Data Set for 2001 was produced through a cooperative project... Tags: Conterminous United States, NAWQA, NLCD, NSDI, National Land Cover Data Set, All tags... National Water-Quality Assessment, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inland waters, inlandWaters, land cover, land use, Fewer tags Estimating Domestic Self-Supply Water Use for the Delaware River Basin, 2010 U.S. Census Blocks 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. According to the U.S. Geological Survey, an estimated 258 million people nationwide, or 86% of the U.S. population, relied on public water supplies for their household use in 2005 (USGS, 2013). The remaining population obtains their water from different sources, such as a domestic self-supply well. However, the spatial distribution of water supply systems has not been compiled. Mapping where these people are located can be done within... Tags: Bureau of Census, Census block shapes, Delaware, Delaware River, Delaware River Basin, All tags... Delaware River Basin, Delaware River Basin, Domestic Self Supply, Maryland, NSDI, New Jersey, New York, Pennsylvania, Public Supply, Public Water Supply, U.S. Geological Survey, U.S. Geological Survey, USGS Science Data Catalog (SDC), Water Use, Water Use, WaterSmart, boundaries, inland waters, inland waters, Fewer tags Attributes for NHDPlus Catchments (Version 1.1) in the Conterminous United States: Bedrock Geology 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. This data set represents the area of bedrock geology types in square meters compiled for every catchment of NHDPlus for the conterminous United States. The source data set is the "Geology of the Conterminous United States at 1:2,500,000 Scale--A Digital Representation of the 1974 P.B. King and H.M. Beikman Map" (Schuben and others, 1994). The NHDPlus Version 1.1 is an integrated suite of application-ready geospatial datasets that... Tags: Bedrock Geology, CALI, COGB, California, Catchment, All tags... Conterminous United States, GLMR, Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy, Inlandwaters, LMTG, Lower Mississippi, Arkansas-White-Red, and Texas-Gulf, MORI, MRB, MRB1, MRB2, MRB3, MRB4, MRB5, MRB6, MRB7, MRB8, Major River Basin, Missouri, NAWQA, NEMA, NHDPlus, NSDI, New England and Mid-Atlantic, PANW, Pacific Northwest, Rio Grande, Colorado, and Great Basin, SAGT, SPARROW, South Atlantic-Gulf and Tennessee, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, Fewer tags Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: 30-Year Average Annual Precipitation, 1971-2000 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. This tabular data set represents the 30-year (1971-2000) average annual precipitation in millimeters multiplied by 100 compiled for every MRB_E2RF1 catchment of selected Major River Basins (MRBs, Crawford and others, 2006). The source data were the United States Average Monthly or Annual Minimum Precipitation, 1971 - 2000 raster data set produced by the PRISM Group at Oregon State University. The MRB_E2RF1 catchments are based on... Tags: 30-year average annual precipitation, Catchment, Conterminous United States, GLMR, Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy, All tags... Inlandwaters, LMTG, Lower Mississippi, Arkansas-White-Red, and Texas-Gulf, MORI, MRB, MRB2, MRB3, MRB4, MRB5, MRB7, MRB_E2RF1, MRB_E2RF1WS, Major River Basins, Missouri, NAWQA, NSDI, PANW, Pacific Northwest, SAGT, SPARROW, South Atlantic-Gulf and Tennessee, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, Fewer tags A Surficial Hydrogeologic Framework for the Mid-Atlantic Coastal Plain 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. The hydrogeologic framework was developed from a combination of the physiography and the predominant texture of surficial geologic units in the Mid-Atlantic Coastal Plain. It describes the primary natural physical factors that affect the flow and chemistry of shallow ground water and small streams in the Mid-Atlantic Coastal Plain. Seven hydrogeologic subregions were defined. Some of the subregions correspond directly to the physiographic... Tags: Coastal Plain, Coastal Plain, Delaware, Maryland, Mid-Atlantic, All tags... Mid-Atlantic, NSDI, New Jersey, North Carolina, Pennsylvania, USGS Science Data Catalog (SDC), Virginia, Washington, D.C., environment, framework, geology, geoscientificInformation, groundwater, hydrogeology, inland waters, inlandWaters, physiography, surficial, Fewer tags Subsurface Drains on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice 606 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. This data set represents the estimated percentage of the 1-km grid cell that is covered by or subject to the agricultural conservation practice (CP606), Subsurface Drains (SD) on agricultural land by county. Subsurface Drains are described as "a conduit, such as corrugated plastic tubing, tile, or pipe, installed beneath the ground surface to collect and/or convey drainage." (U.S. Department of Agriculture, 1995) This data set was... Tags: Agricultural Practices, Conterminous United States, NSDI, National Resources Inventory, Subsurface Drains, All tags... USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, inlandWaters, Fewer tags Digital elevation model and derivative datasets to support the integration of stormwater drainage into the Washington, D.C. Stormwater StreamStats application This dataset was created to support the Washington D.C. StreamStats project funded by the Washington D.C. Department of Energy and Environment (DOEE). The dataset contains digital elevation model (DEM), flow direction and catchment layers that were conditioned using Washingtons D.C.’s stormwater network layer. The data are hosted online as a component of the USGS StreamStats web application (https://streamstats.usgs.gov), where users can interact with a map of Washington D.C.’s stormwater pipe system and National Hydrography Dataset (NHD) “best resolution” blue lines to delineate drainage basins that account for pipe flow. This project utilized 1-meter (high resolution) terrain products, which improves upon existing... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Anacostia, District of Columbia, Fourmile Run - Potomac River, Geography, Hydrology, All tags... Lower Anacostia River, Lower Rock Creek, Mid Atlantic, Middle Potomac-Anacostia-Occoquan, Montgomery, Nichols Run Potomac River, Northwest Branch Anacostia, Pimmit Run - Potomac River, Potomac, Prince George's, Remote Sensing, USGS Science Data Catalog (SDC), Washington East, Washington West, Water Resources, digital elevation models, drainage basins, earth characteristics, elevation, environment, geoscientificInformation, geospatial datasets, hydrographic features, land surface characteristics, lidar, streams, topography, Fewer tags Preliminary streamflow percentile predictions for ungaged areas of the Colorado River Basin, 1981-2020 This dataset consists of daily streamflow percentiles for 1981-10-01 to 2020-03-31 relevant to streamflow drought defined using two approaches: Percentiles accounting for flow seasonality (variable threshold percentiles) and those based on the full record of data for each site regardless of season (fixed threshold percentiles). Because of the size of this dataset (99,530,836 rows), it could not be provided as a .csv file, and is instead provided as a .parquet file. Instructions on reading this file using the R programming language are provided in the Processing Step section of this metadata. The daily streamflow percentiles were estimated for ungaged areas of the Colorado River Basin (CRB) using neural network models,... Tags: Colorado River Basin, Drought, Streamflow, USGS Science Data Catalog (SDC), United States, All tags... Water Resources, climatologyMeteorologyAtmosphere, inlandWaters, Fewer tags National Land Cover Database 2001 (NLCD01) Tile 3, Southwest United States: NLCD01_3 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. This 30-meter data set represents land use and land cover for the conterminous United States for the 2001 time period. The data have been arranged into four tiles to facilitate timely display and manipulation within a Geographic Information System (see https://www.sciencebase.gov/catalog/file/get/631405cad34e36012efa3299?name=nlcd01-partitions.jpg). The National Land Cover Data Set for 2001 was produced through a cooperative project... Tags: Conterminous United States, NAWQA, NLCD, NSDI, National Land Cover Data Set, All tags... National Water-Quality Assessment, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inland waters, inlandWaters, land cover, land use, Fewer tags MODFLOW-NWT model with SWI2 used to evaluate the water-table response to sea-level rise and change in recharge, Assateague Island, Maryland and Virginia A three-dimensional groundwater flow model, MODFLOW-NWT with the SWI2 module, was developed to provide a better understanding of the fresh groundwater system of Assateague Island, Maryland and Virginia. Groundwater flow on Assateague Island was simulated to evaluate the effects of sea-level rise and changes in recharge on the depth to freshwater below the land surface, changes in freshwater discharge, and the depth of the freshwater/saltwater interface. The model was calibrated to average 2014-15 hydrologic conditions and vegetation. The model also simulated the movement of the freshwater- seawater interface for three sea-level rise scenarios.This USGS data release contains all of the input and output files for... Tags: Accomack County, Assateague Island, Chincoteague Bay, Groundwater, Groundwater Model, All tags... InlandWaters, MODFLOW-NWT, Maryland, NSDI, Saltwater Intrusion, Sinepuxent Bay, USGS Science Data Catalog (SDC), Virginia, Worcester County, environment, geoscientificInformation, inlandWaters, usgsgroundwatermodel, Fewer tags Groundwater Site Identification Indexes for Washington D.C., Baltimore City, and the Counties of Maryland 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. These data sets represent 23 geographic 5-minute indexes for the counties of Maryland, one 2 1/2-minute index for Washington D.C., and 1-mile square index for Baltimore City. There are 25 vector polygon data sets covered by this metadata report. Tags: 1-mile index, 2 1/2-minute index, 5-minute index, Allegany County, Anne Arundel County, All tags... Baltimore City, Baltimore County, Calvert County, Caroline County, Carroll County, Cecil County, Charles County, Dorchester County, Frederick County, Garrett County, Harford County, Howard County, Kent County, Maryland, Montgomery County, NSDI, Prince George's County, Queen Anne's County, Saint Mary's County, Somerset County, Talbot County, USGS Science Data Catalog (SDC), United States, Washington County, Washington, D.C., Wicomico County, Worcester County, environment, geoscientificInformation, inlandWaters, inlandwaters, Fewer tags Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Nutrient Application (Phosphorus and Nitrogen ) for Fertilizer and Manure Applied to Crops (Cropsplit), 2002 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. This data set represents the estimated amount of phosphorus and nitrogen fertilizers applied to selected crops for the year 2002, compiled for every catchment of NHDPlus for the conterminous United States. The source data set is based on 2002 fertilizer data (Ruddy and others, 2006) and tabulated by crop type per county (Alexander and others, 2007). The NHDPlus Version 1.1 is an integrated suite of application-ready geospatial datasets... Tags: CALI, COGB, California, Catchment, Conterminous United States, All tags... GLMR, Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy, Inlandwaters, LMTG, Lower Mississippi, Arkansas-White-Red, and Texas-Gulf, MORI, MRB, MRB1, MRB2, MRB3, MRB4, MRB5, MRB6, MRB7, MRB8, Major River Basin, Missouri, NAWQA, NEMA, NHDPlus, NSDI, New England and Mid-Atlantic, PANW, Pacific Northwest, Phosphorus and Nitrogen, Rio Grande, Colorado, and Great Basin, SAGT, SPARROW, South Atlantic-Gulf and Tennessee, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, Fewer tags 1 2 3 4 5 6 »