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Percent impervious surface for selected Chesapeake Bay watersheds


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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,


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.


Point of Contact :
Karen R. Ryberg
Originator :
James Falcone, Karen R. Ryberg
Metadata Contact :
James Falcone
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase

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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.

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