Percent impervious surface for selected Chesapeake Bay watersheds
Dates
Publication Date
2017
Start Date
1985
End Date
2012
Citation
Ryberg, K.R., Sekellick, A.J., and Falcone, J.A., 2017, Ancillary data related to nutrients in the Chesapeake Bay—Data supporting structural equation modeling of nutrient loads: U.S. Geological Survey data release, https://doi.org/10.5066/F7NG4NQ4.
Summary
This dataset contains watershed means of estimated percent impervious surfaces for three time periods: 1992, 2002, and 2012. Estimates are based on coefficients derived from comparing land use of the 2012 NAWQA Wall-to-wall Anthropogenic Land-use Trends (NWALT) product to the 2011 National Land Cover Database (NLCD) imperviousness, then applying those coefficients to previous years (1974-2002) of the NWALT dataset.
Summary
This dataset contains watershed means of estimated percent impervious surfaces for three time periods: 1992, 2002, and 2012. Estimates are based on coefficients derived from comparing land use of the 2012 NAWQA Wall-to-wall Anthropogenic Land-use Trends (NWALT) product to the 2011 National Land Cover Database (NLCD) imperviousness, then applying those coefficients to previous years (1974-2002) of the NWALT dataset.
Click on title to download individual files attached to this item.
Percent_impervious_surface.xml Original FGDC Metadata
View
14.8 KB
application/fgdc+xml
imperviousSurface.csv “data”
62.87 KB
text/csv
Purpose
The purpose of this dataset is to document the data used for structural equation models of total nitrogen and total phosphorus loads in selected Chesapeake Bay watersheds.
