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  1. Water Mission Area National Spatial Data Infrastructure Datasets
  2. Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: NLCD 2001 Tree Canopy

Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: NLCD 2001 Tree Canopy

Dates

Release Date
2010-01-01
Publication Date

Citation

Wieczorek, M.E. and LaMotte, A.E., 2010, Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: NLCD 2001 Tree Canopy: U.S. Geological Survey data release, https://doi.org/10.5066/P90D79CT.

Summary

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 mean percent tree canopy from the Canopy Layer of the National Land Cover Dataset 2001 (LaMotte and Wieczorek, 2010), compiled for every MRB_E2RF1 catchment of Major River Basins (MRBs, Crawford and others, 2006). The source data set represents tree canopy percentage for the conterminous United States for 2001. The Canopy Layer of the National Land Cover Data Set for 2001 was produced through a cooperative project [...]

Contacts

Point of Contact :
Michael E. Wieczorek, U.S. Geological Survey
Originator :
Michael E. Wieczorek, Andrew E. LaMotte
Metadata Contact :
U.S. Geological Survey
SDC Data Owner :
Maryland-Delaware-D.C. Water Science Center
USGS Mission Area :
Water Resources

Attached Files

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mrb_e2rf1_canopy.xml
Original FGDC Metadata
View 		22.11 KB application/fgdc+xml
mrb_e2rf1_canopy_mrb1.zip 60.99 KB application/zip
mrb_e2rf1_canopy_mrb2.zip 108.85 KB application/zip
mrb_e2rf1_canopy_mrb3.zip 152.98 KB application/zip
mrb_e2rf1_canopy_mrb4.zip 156.34 KB application/zip
mrb_e2rf1_canopy_mrb5.zip 108.44 KB application/zip
mrb_e2rf1_canopy_mrb6.zip 69.85 KB application/zip
mrb_e2rf1_canopy_mrb7.zip 151.47 KB application/zip
mrb_e2rf1_canopy_mrb8.zip 32.45 KB application/zip
mrb_e2rf1_canopy.jpg thumbnail 45.16 KB image/jpeg

Purpose

This tabular data set was created and used by the U.S. Geological Survey (USGS) specifically to estimate mean percentage of tree canopy for 2001 per watershed segment in the application of the national SPAtially Referenced Regression On Watershed attributes (SPARROW) model . The SPARROW model relates in-stream water-quality measurements to spatially referenced characteristics of watersheds, including contaminant sources and factors influencing terrestrial and stream transport. The model empirically estimates the origin and fate of contaminants in streams, and quantifies uncertainties in these estimates based on model coefficient error and unexplained variability in the observed data. For more information on the USGS SPARROW model please refer to: https://water.usgs.gov/nawqa/sparrow/intro/intro.html.
Illlustration of data set
Illlustration of data set

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Provenance

These data were originally released on the Water Mission Area National Spatial Data Infrastructure Node and were migrated to sciencebase.gov in 2023. 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.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P90D79CT

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