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Priority Toxic Contaminant Metadata Inventory and Associated Total Polychlorinated Biphenyls Concentration Data In June 2019, the U.S. Geological Survey Maryland-Delaware-District of Columbia Water Science Center (MD-DE-DC WSC) team began to collect and inventory available information on toxic contaminants within the Chesapeake Bay Watershed. State agencies were contacted to determine available data. Also, the National Water Information System (NWIS) and National Water Quality Database (NWQD) were queried to gather relevant data for the compilation. The resulting tables contain records for available sites where specific analyte groups, Hg (mercury), PCB (polychlorinated biphenyls), or pesticides, have been collected with appropriate supplemental metadata including media, method, time frame, and frequency of collection. Sample... Categories: Data; Tags: Aquatic Biology, Environmental Health, Hydrology, Mercury, PCBs, All tags... Pesticides, Polychlorinated Biphenyls, Soil Sciences, USGS Science Data Catalog (SDC), Water Quality, Water Resources, inlandWaters, Fewer tags Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: STATSGO Soil Characteristics 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 estimated soil variables compiled for every catchment of NHDPlus for the conterminous United States. The variables included are cation exchange capacity, percent calcium carbonate, slope, water-table depth, soil thickness, hydrologic soil group, soil erodibility (k-factor), permeability, average water capacity, bulk density, percent organic material, percent clay, percent sand, and percent silt. The source... Categories: pre-SM502.8; 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, Rio Grande, Colorado, and Great Basin, SAGT, SPARROW, STATSGO, South Atlantic-Gulf and Tennessee, USGS Science Data Catalog (SDC), elevation, geoscientificInformation, inlandWaters, Fewer tags Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Hydrologic Landscape Regions 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 Hydrologic Landscape Regions (HLR) compiled for every catchment of NHDPlus for the conterminous United States. The source data set is a 100-meter version of Hydrologic Landscape Regions of the United States (Wolock, 2003). HLR groups watersheds on the basis of similarities in land-surface form, geologic texture, and climate characteristics. The NHDPlus Version 1.1 is an integrated suite of application-ready... Categories: pre-SM502.8; Tags: CALI, COGB, California, Catchment, Conterminous United States, All tags... GLMR, Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy, Hydrologic landscape regions, 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 A Digital Hydrologic Network Supporting NAWQA MRB SPARROW Modeling--MRB_E2RF1 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. A digital hydrologic network was developed to support SPAtially Referenced Regression on Watershed attributes (SPARROW) models within selected regions of the United States. These regions correspond with the U.S. Geological Survey's National Water Quality Assessment (NAWQA) Program Major River Basin (MRB) study units 2, 3, 4, 5, and 7 (Preston and others, 2009). MRB2, covers the South Atlantic-Gulf and Tennessee River basins. MRB3,... Categories: pre-SM502.8; Tags: Conterminous United States, MRB, MRB2, MRB3, MRB4, All tags... MRB5, MRB7, Major River Basin, NAWQA, NSDI, RF1, SPARROW, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, inlandWaters, network, reach, reservoir, river, stream, water quality, Fewer tags National Land Cover Database 2001 (NLCD01) Tree Canopy Layer Tile 1, Northwest United States: CNPY01_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 resolution data set represents the tree canopy 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.jpg. The National Land Cover Data Set for 2001 was produced through a cooperative project conducted by the Multi-Resolution Land Characteristics... Categories: pre-SM502.8; Tags: Conterminous United States, Inlandwaters, NAWQA, NLCD, NSDI, All tags... National Land Cover Data Set, National Water-Quality Assessment, Tree canopy, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, land cover, land use, Fewer tags A Digital Hydrologic Network Supporting NAWQA MRB SPARROW Modeling--MRB_E2RF1WS 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. A digital hydrologic network was developed to support SPAtially Referenced Regression on Watershed attributes (SPARROW) models within selected regions of the United States. These regions correspond with the U.S. Geological Survey's National Water Quality Assessment (NAWQA) Program Major River Basin (MRB) study units 2, 3, 4, 5, and 7 (Preston and others, 2009). MRB2, covers the South Atlantic-Gulf and Tennessee River basins. MRB3,... Categories: pre-SM502.8; Tags: Conterminous United States, MRB, MRB2, MRB3, MRB4, All tags... MRB5, MRB7, Major River Basin, NAWQA, NSDI, RF1, SPARROW, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, inlandWaters, network, reach, reservoir, river, stream, water quality, Fewer tags Estimating Domestic Self-Supply Water Use for the Delaware River Basin, 1990 U.S. Census Block Groups 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... Categories: pre-SM502.8; 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 Surface Drainage-Main or Lateral on Agricultural Land in the Conterminous United States, 1992: National Resource Inventory Conservation Practice 608 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 (CP608), Surface Drainage, Main or Laterals (SDML) on agricultural land by county. Surface Drainage, Main or Laterals are described as "an open drainage ditch constructed to a designed size and grade. [As] part of a water management system to collect and convey excess surface or subsurface... Categories: pre-SM502.8; Tags: Agricultural Practices, Conterminous United States, NSDI, National Resources Inventory, Surface Drainage, Field Ditches, All tags... USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, inlandWaters, Fewer tags Hydrogeomorphic Regions in the Chesapeake Bay Watershed. 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. Generalized lithology (rock type) and physiography based on geologic formations were used to characterize hydrgeomorphic regions (HGMR) within the Chesapeake Bay watershed. These HGMRs were used in conjunction with existing data to assess the significance of ground-water discharge as a source of nitrate load to nontidal streams in the Chesapeake Bay watershed (Bachman and others, 1998). This work is part of the U.S. Geological Survey's... Categories: pre-SM502.8; Tags: (keyword) Chesapeake Bay, (keyword) Geology, (keyword) HGMR, (keyword) Hydrogeomorphic Region, (keyword) Lithology, All tags... (keyword) Mid-Atlantic, (keyword) Physiographic, (keyword) Physiography, (keyword) Province, (keyword) Rock, (keyword) Rock Type, NSDI, USGS Science Data Catalog (SDC), environment, geoscientificInformation, inlandWaters, inlandWaters, Fewer tags Maryland Water-Use Data, 1998 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. MDWU98 is a point coverage that represents the locations of wells for the State of Maryland that are permitted to withdraw 10,000 gallons or more per day by the Maryland Department of the Environment (MDE). Each site has the permit number, permit amount, reported withdrawal, aquifer code, and type of use. Information contained in the dataset comes from the U.S.Geological Survey site-specific water-use database (SWUDS). Categories: pre-SM502.8; Tags: Ground-water, Maryland, NSDI, USGS Science Data Catalog (SDC), Water-use, All tags... Well, Withdrawal, environment, geoscientificInformation, inlandWaters, inlandWaters, Fewer tags Watershed Potential to Contribute Phosphorus from Geologic Materials to Receiving Streams, Conterminous United States 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 spatial data layer is a cell-based Raster model characterizing the contribution of phosphorus (P) to streams from weathering and erosion of surficial geologic materials for the conterminous United States, and has been created as part of the SPARROW (Spatially Referenced Regressions on Watershed Attributes) water-quality model implementation. SPARROW provides estimates of total nitrogen and phosphorus load in surface waters from... Categories: pre-SM502.8; Tags: Conterminous United States, NSDI, SPARROW model, USGS Science Data Catalog (SDC), bed sediment, All tags... eco regions, environment, geoscientificInformation, inlandWaters, inlandWaters, phosphorus, streams, surficial geology, Fewer tags Attributes for NHDPlus Catchments (Version 1.1) in the Conterminous United States: Artificial Drainage (1992) and Irrigation Types (1997) 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 dataset represents the estimated area of artificial drainage for the year 1992 and irrigation types for the year 1997 compiled for every catchment of NHDPlus for the conterminous United States. The source datasets were derived from tabular National Resource Inventory (NRI) datasets created by the National Resources Conservation Service (NRCS, U.S. Department of Agriculture, 1995, 1997). Artificial drainage is defined... Categories: pre-SM502.8; Tags: Artificial Drainage, CALI, COGB, California, Catchment, All tags... Conterminous United States, GLMR, Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy, Inlandwaters, Irrigation, 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, National Resource Inventory, New England and Mid-Atlantic, PANW, Pacific Northwest, Rio Grande, Colorado, and Great Basin, SAGT, SPARROW, South Atlantic-Gulf and Tennessee, Subsurface drains Drainage, Tile drains, USGS Science Data Catalog (SDC), ditches, environment, geoscientificInformation, inlandWaters, Fewer tags Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Population Density from U.S. Block-Level Population Density Rasters for 2000 This tabular data set represents population density, persons per square kilometer from 2000Census block level data, processed by James Falcone (USGS, 2016), compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. This dataset can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data for population density was produced by the U.S. Geological Survey (Falcone, 2016). Units are persons per square kilometer. Reach catchment information characterizes data at the local scale. Reach catchments accumulated upstream through... Types: Citation; Tags: 2000 Population density, Catchment, Conterminous United States, Inlandwaters, NAWQA, All tags... NHDPlus, SPARROW, Fewer tags Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Percent NLCD 2011 in 50 Meter Riparian Buffer This tabular data set represents the percent of NLCD 2011 land cover classes in the 50 meter riparian buffer zones compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. This dataset can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data is the "National Land Cover Database 2011" produced by the United States Geological Survey (Homer and others, 2011). Units are percent. Reach catchment information characterizes data at the local scale. Reach catchments accumulated upstream through the river network characterizes... Types: Citation; Tags: 50 meter riparian buffer, Catchment, Conterminous United States, Inlandwaters, NAWQA, All tags... NHDPlus, NLCD 2011, SPARROW, Fewer tags Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Modeled historical land use and land cover for the conterminous United States, 1992-2002 This tabular data set contains information on historic land use, compiled for two spatial components of the NHDPlus version 2.1 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. This dataset can be linked to the NHDPlus version 2.1 data suite by the unique identifier COMID. The source data is from the Modeled historical land use and land cover for the conterminous United States produced by Terry Sohl and others (USGS, 2014). The data provided here contains information for the years, 1992 through 2002, compiled as described above. The units are in percents. Reach catchment information characterizes data... Tags: Conterminous United States, Inlandwaters, NHDPlus, backcasting, land cover, All tags... land use, Fewer tags Attributes for NHDPlus version 2.1 catchments and modified routing of upstream watersheds for the conterminous United States: estimated fresh-water withdrawal, 2010 This metadata record documents two comma separated text files of average daily fresh-water withdrawal amounts by NHDPlus v2.1 catchment (COMID) within the conterminous United States for calendar year 2010. County-level reported estimated use of water are specifically reported as groundwater and surface water and are allotted to catchments by a sum of the catchment based on evenly distributing the county total across the number of county land-area pixels. All values are reported as gallons per day. Source county-level data were acquired from Estimated use of water in the United States in 2010 (Maupin and others, 2014; available at https://dx.doi.org/10.3133/cir1405). These datasets can be linked to the NHDPlus version... Tags: conterminous United States, groundwater, inlandWaters, surface water, water use, All tags... water withdrawal, Fewer tags Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Crop Land Data Layer 2012 This tabular data set represents the percent of land cover classes from the 2012 Crop land Data Layer compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. This dataset can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data is the "2012 Crop Land Data Layer" produced by the United States Department of Agriculture (USDA) National Agricultural Statistics Service (NASS, 2015). Reach catchment information characterizes data at the local scale. Reach catchments accumulated upstream through the river network characterizes... Types: Citation; Tags: CDL, Catchment, Conterminous United States, Crop Land Data Layer, CropScape, All tags... Inlandwaters, NAWQA, NHDPlus, SPARROW, agriculture, crop cover, crop estimates, cropland, land cover, Fewer tags Attributes for NHDPlus Version 2.1 Reach Catchments and Modified Routed Upstream Watersheds for the Conterminous United States: Distribution of Phosphorus in Soil Horizons A and C and Geologic Mapping Units This tabular data set represents the estimated distribution of Phosphorus (P) in the soil A and C horizons, milligrams per kilogram compiled for two spatial components of the NHDPlus version 2.1 data suite (hereto referred as NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. This dataset can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data is from the publication, Distribution of Phosphorus (P) in the soil A and C horizons, Terziotti, 2019). Units are milligrams per kilogram. Reach catchment information characterizes data at the local scale. Reach catchments accumulated... Tags: Catchment, Conterminous United States, Inlandwaters, NAWQA, NHDPlus, All tags... SPARROW, geologic mapping units, phosphorous, soil horizon A, soil horizon C, Fewer tags Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: Percent of Watershed Covered by Waterbodies from NHD High Resolution This tabular data set represents the presence of six National Hydrography Dataset (NHD) high resolution waterbody types compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. The six types of waterbodies presented here are: playa, ice mass, lake/pond, reservoir, swamp/marsh, and estuary. This dataset can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data is the NHDPlus high resolution waterbodies produced by USGS , 2015. Units are percent. Reach catchment information characterizes data at the local scale.... Types: Citation; Tags: Catchment, Conterminous United States, Inlandwaters, NAWQA, NHD high resolution waterbodies, All tags... NHDPlus, SPARROW, estuaries, ice, lakes, marshes, playas, ponds, reservoirs, swamps, Fewer tags Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: 30 Year Average (1961-1990) of Maximum Monthly Number of Days of Measurable Precipitation This tabular data set represents 30 year average (1961-1990) of maximum monthly number of days of measurable precipitation per month compiled for two spatial components of the NHDPlus version 2 data suite (NHDPlusv2) for the conterminous United States; 1) individual reach catchments and 2) reach catchments accumulated upstream through the river network. This dataset can be linked to the NHDPlus version 2 data suite by the unique identifier COMID. The source data for 30 year average (1961-1990) of maximum monthly number of days of measurable precipitation was originally PRISM-based data, with some further enhancements by ClimateSource.com and then provided to the USGS by the Environmental Protection Agency (Ryan... Types: Citation; Tags: Catchment, Conterminous United States, Inlandwaters, NAWQA, NHDPlus, All tags... SPARROW, Fewer tags « 1 ... 8 9 10 11 12 ... 19 »