I am looking for a practical way to estimate percent impervious area for
wellhead protection areas and water supply watersheds in our state, if
possible from remote sensing data we already have or can easily get.
We have LANDSAT-derived landcover at 30 m resolution (some
landcover categories have imperviousness ranges associated with
them) and high-altitude SPOT black and white images with 10 m
resolution (we could overlay a grid and count squares). Could someone
point me to other means of developing imperious area estimates?
Paul Susca
Drinking Water Source Protection Program
NH Department of Environmental Services
Concord, New Hampshire
USA
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