Parent Layer:
Impervious Cover Best Available Data
Name: 2010
Display Field:
Type: Raster Layer
Geometry Type: null
Description: This is a county-wide impervious cover data set covering Strafford County, New Hampshire and was derived using semi-automated image classification methods based on 1-foot resolution orthophotography acquired in the spring of 2010 and fall of 2011. The image processing phase of the project involved Object Based Image Analysis (OBIA) using eCognition software. A second phase followed in order to cleanup obvious classification errors and to include addition impervious cover masked by overhanging foliage, where present. The data set has two classes, pervious and impervious. The impervious cover are human-made surfaces that do not allow water to permeate through them. Naturally occurring impervious cover such exposed bedrock, etc. were not included in the impervious class.
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