41 datasets found
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Federal
Drainage Basins Used for Assessing Trends in Concentration of Pesticides in Streams of the United States, 1992-2010
Department of the Interior —
This dataset consists of drainage basin boundaries for 212 U.S. Geological Survey (USGS) stream sites sampled in the National Water-Quality Assessment (NAWQA)... -
Federal
Estimates of subsurface tile drainage extent for the conterminous United States, early 1990s
Department of the Interior —
This dataset is a 30-meter resolution national-scale raster of estimated subsurface tile drainage extent based on early 1990s county areas of subsurface tile drains... -
Federal
Study Region Boundaries for the U.S. Geological Survey Regional Stream Quality Assessment
Department of the Interior —
In 2013, the Regional Stream Quality Assessment (RSQA) study was started as part of the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA)... -
Federal
Riparian-Zone Boundaries for the U.S. Geological Survey Midwest Stream Quality Assessment
Department of the Interior —
In 2013, the first of several Regional Stream Quality Assessments (RSQA) was done in the Midwest United States. The Midwest Stream Quality Assessment (MSQA) was a... -
Federal
Sampled Sites for the U.S. Geological Survey Regional Stream Quality Assessment
Department of the Interior —
In 2013, the Regional Stream Quality Assessment (RSQA) study was started as part of the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA)... -
Federal
Generalized boundaries of the National Water-Quality Assessment (NAWQA) Study-Unit Investigations in the conterminous United States 2001-2012
Department of the Interior —
This is a GENERALIZED version of the boundaries and codes used for the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program Study-Unit... -
Federal
Dissolved Pesticides in Weekly Water Samples from the NAWQA California Stream Quality Assessment (2017)
Department of the Interior —
Dissolved pesticides were measured in weekly water samples from 85 wadeable streams in Central Coastal California over a variable six-week period during March–May,... -
Federal
Watershed Boundaries for the U.S. Geological Survey Midwest Stream Quality Assessment
Department of the Interior —
In 2013, the first of several Regional Stream Quality Assessments (RSQA) was done in the Midwest United States. The Midwest Stream Quality Assessment (MSQA) was a... -
Federal
Drainage Basins used for Development of the Watershed Regressions for Pesticides (WARP) Model
Department of the Interior —
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)... -
Federal
National Land Cover Database 2001 (NLCD01) Tree Canopy Layer Tile 4, Southeast United States: CNPY01_4
Department of the Interior —
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... -
Federal
Enhanced National Land Cover Data 1992 revised with 1990 and 2000 population data to indicate urban development between 1992 and 2000 (NLCDep0306)
Department of the Interior —
This 30-meter resolution raster data set of land cover for the conterminous United States ("NLCDep0306") was designed to describe conditions representative of the... -
Federal
Enhanced National Land Cover Data 1992 revised with 2000 population data to indicate urban development between 1992 and 2000 (NLCDep0905)
Department of the Interior —
This 30-meter resolution raster data set of land cover for the conterminous United States ("NLCDep0905") was designed to describe conditions representative of the... -
Federal
Riparian-Zone Boundaries for the U.S. Geological Survey Regional Stream Quality Assessment
Department of the Interior —
In 2013, the Regional Stream Quality Assessment (RSQA) study was started as part of the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA)... -
Federal
Selected environmental characteristics of sampled sites, watersheds, and riparian zones for the U.S. Geological Survey Regional Stream Quality Assessment, 2013 to 2017
Department of the Interior —
In 2013, the Regional Stream Quality Assessment (RSQA) study was started as part of the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA)... -
Federal
National Land Cover Database 2001 (NLCD01) Tile 4, Southeast United States: NLCD01_4
Department of the Interior —
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... -
Federal
Pesticides in Weekly Water Samples from the NAWQA Midwest Stream Quality Assessment (2013)
Department of the Interior —
Dissolved pesticides were measured in weekly water samples from 100 wadeable streams across eleven states in the Midwestern U.S. during May-August, 2013, as part of... -
Federal
Watershed Boundaries for the U.S. Geological Survey Regional Stream Quality Assessment
Department of the Interior —
In 2013, the Regional Stream Quality Assessment (RSQA) study was started as part of the U.S. Geological Survey (USGS) National Water Quality Assessment (NAWQA)... -
Federal
Data from Decadal Change in Groundwater Quality Web Site, 1988-2024
Department of the Interior —
Evaluating Decadal Changes in Groundwater Quality: Groundwater-quality data were collected from 5,000 wells between 1988-2001 (first decadal sampling event) by the... -
Federal
Generalized boundaries of the National Water-Quality Assessment (NAWQA) Study-Unit Investigations in the conterminous United States 1991-2001
Department of the Interior —
This is a GENERALIZED version of the boundaries and codes used for the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) Program Study-Unit... -
Federal
National Land Cover Database 2001 (NLCD01) Imperviousness Layer Tile 4, Southeast United States: IMPV01_4
Department of the Interior —
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...
41 datasets found