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GRANIT Metadata for Two Foot Contours - East Meadow River-Merrimack River (010700061404) - smooth

GRANIT Metadata for Two Foot Contours - East Meadow River-Merrimack River (010700061404) - smooth

Title: Two Foot Contours - East Meadow River-Merrimack River (010700061404) - smooth
Time Period of Content: 05/06/2011 - 05/30/2011 Initial Publication Date: 05/31/2013
Originator: Earth Systems Research Center, University of New Hampshire
Abstract:
This data set represents smoothed, 2-foot bare earth contours (isolines) for the East Meadow River-Merrimack River unit. The data set was extracted from a regional elevation contour data set derived from the Coastal New Hampshire LiDAR collection (2011). Prior to contour generation, the regional LiDAR raster was "smoothed" using the ArcGIS "Focal Statistics" tool using a 3x3 circular neighborhood. The contours were generated using the ArcGIS "Contour" tool while applying a Z factor of 3.2802 to convert the elevation values from meters to feet. Once generated, contours less than 1 meter in length were deleted. The contours were further generalized using the "Smooth" function from within ArcMap with a maximum allowable offset of 0.1 meter.
Theme Keywords: Elevation, contours, hypsography, LiDAR, coastal, coastalcontours, elevation
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