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GRANIT Metadata for Impervious Surfaces in the Coastal Watershed of NH and Maine, High Resolution - 2015

GRANIT Metadata for Impervious Surfaces in the Coastal Watershed of NH and Maine, High Resolution - 2015

Title: Impervious Surfaces in the Coastal Watershed of NH and Maine, High Resolution - 2015
Time Period of Content: 2015 Initial Publication Date: 06/07/2017
Originator: Earth Systems Research Center, University of New Hampshire
Abstract:
This data set maps impervious surfaces as of 2015 within the 52 towns of the Piscataqua Region Estuaries Partnership (PREP). It also includes impervious features as of 2010, thereby facilitating change analysis. The data set identifies human-made surfaces that do not allow water to permeate through them. Naturally occurring impervious cover, such as exposed bedrock, is not included in the impervious class.

The New Hampshire component of the data set was derived by interpreting 1-foot resolution, 4-band orthophotography, acquired in the spring of 2015, and delineating features. Primary source data for Maine comprised 1-meter resolution, 3-band orthotography, acquired in the summer of 2015. Additional reference data sets, including older orthophoto imagery from 2005 and 2010, were also used in the delineation of features.

Funding for this project was provided by a grant from the Piscataqua Regional Estuaries Partnership as authorized by the U.S. Environmental Protection Agency's National Estuary Program.
Theme Keywords: Impervious, Impervious cover, Impervious surface, Runoff, Land use, Landuse, Land cover, Landcover, Photo interpretation
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