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This dataset and the accompanying Data Series report was created to assist in analysis and interpretation of water-quality data provided by the U.S. Geological Survey, National Stream Quality Accounting Network (NASQAN) and the National Monitoring Network (NMN). The report describes the methods used to develop the geospatial data which was primarily derived from the National Watershed Boundary Dataset (WBD12). The geospatial data contains polygon shapefiles of basin boundaries for 33 NASQAN and 5 NMN stations. In addition, 30 polygon shapefiles of the closed and noncontributing basins contained within the NASQAN or NMN boundaries where applicable are included. Also included is a point shapefile of the NASQAN and...
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The Drainage_Basin polygon feature class was created as a digital representation of drainage basins for more than 1,650 continuous-record streamflow-gaging stations, partial record streamflow-gaging stations of the U.S. Geological Survey (USGS), and other watercourse locations of interest. The Drainage_Basin polygon feature class replaces the drainage basins previously derived through planimetric methods on paper maps, and provides a digital representation that previously was unavailable. The dataset will be used for the update and publication of drainage areas to all USGS stations in Virginia. This dataset represents historical flow patterns and avoids anthropogenic changes to flow when possible. The Drainage_Basin...
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As part of the U.S. Geological Survey's National Water-Quality Assessment Program, an investigation of the Yellowstone River Basin study unit is being conducted to document status and trends in surface- and ground-water quality. Surface-water samples are collected from streams (or lakes) at specific sampling stations. Water-quality characteristics at each station are influenced by the natural and cultural characteristics of the drainage area upstream from the sampling station. Efficient quantification of the drainage area characteristics requires a digital map of the drainage area boundary that may be processed, together with other digital thematic maps (such as geology or land use), in a geographic information...
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This dataset consists of drainage basin boundaries for 212 U.S. Geological Survey (USGS) stream sites sampled in the National Water-Quality Assessment (NAWQA) Program, the National Stream Quality Accounting Network (NASQAN), and the National Monitoring Network (NMN). Of the 212 sites, 206 have either a contributing or total drainage basin boundary, and the remaining 6 have both a total drainage basin boundary and a smaller contributing basin boundary. Collectively, these 218 basin boundaries have been used in a geographic information system (GIS) to generate basin characteristics for the assessment of trends in concentrations of pesticides streams of the United States.
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A digital representation of the watersheds of 43 sites on large river systems sampled by the National Stream Quality Accounting Network (NASQAN) of the U. S. Geological Survey (USGS) in 2000 was created primarily from 1:250,000 hydrologic units(HUCs) in the United States. Watershed information from Canada and Mexico was incorporated to complete the areas draining to the sampling sites from outside the United States. The sampled rivers are in one of four major river systems: the Mississippi, the Colorado, the Rio Grande, or the Columbia.
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Note: NED data can be accessed through The National Map (USGS). Instructions are available on The National Map Viewer homepage. The National Elevation Dataset (NED) is the primary elevation data product produced and distributed by the USGS. The NED provides the best available public domain raster elevation data of the conterminous United States, Alaska, Hawaii, and territorial islands in a seamless format. The NED is derived from diverse source data, processed to a common coordinate system and unit of vertical measure. All NED data are distributed in geographic coordinates in units of decimal degrees, and in conformance with the North American Datum of 1983 (NAD 83). All elevation values are provided in units of...
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As part of the U.S. Geological Survey's (USGS) National Water-Quality Assessment Program (NAWQA), an investigation of the Missouri River Basin is being conducted to document trends in surface-water quality, specifically for trends in nutrients and suspended sediment. Surface-water samples were collected from streams at specific sampling stations. Water-quality characteristics at each station are influenced by the natural and cultural characteristics of the drainage area upstream from the sampling station. Efficient quantification of the drainage area characteristics requires a digital map of the drainage area boundary that may be processed, together with other digital thematic maps (such as geology or land use),...
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This data set consists of 204 drainage basin boundaries for U.S. Geological Survey's (USGS) stream sites sampled in the National Water Quality Assessment (NAWQA) Program and the National Stream Quality Accounting Network (NASQAN). These drainage basin boundaries are used to generate watershed characteristics for the development of water-quality models. The basin boundaries were collected from USGS hydrologists and geographers from 1995 through 2008. Correspondingly, the scale or resolution of the boundaries varies, and common boundaries shared by adjacent and nested drainage basins are not entirely coincident. About 60% of the basin boundaries were developed from data sources at the scale of 1:24,000 or resolution...
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This data set contains 204 drainage basin boundaries for U.S. Geological Survey (USGS) stream sites analyzed in the Watershed Regressions for Pesticides (WARP) model. This dataset supercedes version 1.0 released in April 2010, and consists of revisions to 26 basin boundaries.


map background search result map search result map Digital Elevation Model for Wyoming 10 meter National Stream Quality Accounting Network and National Monitoring Network Basin Boundary Geospatial Dataset, 2008-13 Drainage Basins Used for Assessing Trends in Concentration of Pesticides in Streams of the United States, 1992-2010 Watersheds for U.S Geological Survey National Stream Quality Accounting Network (NASQAN) sampling sites 1996-2000. Drainage areas for selected stream-sampling stations, Missouri River Basin Drainage basin delineations for selected USGS streamflow-gaging stations in Virginia (Drainage_Basin) Drainage Basins used for Development of the Watershed Regressions for Pesticides (WARP) Model Drainage Basins used for Development of the Watershed Regressions for Pesticides (WARP) Model, 2012 Drainage-area boundaries for selected sampling stations, scale 1:100,000, Yellowstone River Basin, Montana, North Dakota, and Wyoming Drainage areas for selected stream-sampling stations, Missouri River Basin Drainage basin delineations for selected USGS streamflow-gaging stations in Virginia (Drainage_Basin) Digital Elevation Model for Wyoming 10 meter Drainage-area boundaries for selected sampling stations, scale 1:100,000, Yellowstone River Basin, Montana, North Dakota, and Wyoming National Stream Quality Accounting Network and National Monitoring Network Basin Boundary Geospatial Dataset, 2008-13 Drainage Basins Used for Assessing Trends in Concentration of Pesticides in Streams of the United States, 1992-2010 Drainage Basins used for Development of the Watershed Regressions for Pesticides (WARP) Model Drainage Basins used for Development of the Watershed Regressions for Pesticides (WARP) Model, 2012 Watersheds for U.S Geological Survey National Stream Quality Accounting Network (NASQAN) sampling sites 1996-2000.