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Database Update: NWIPlus

Date/Time(s): September 7, 2017
Event Type: GRANIT News
URL: http://www.granit.unh.edu/data/search?dset=nwiplus
GRANIT has posted a new data set - NWIPLus - available for Southern and Southeastern New Hampshire. NWI digital data contains records of the extent, approximate location, and type of wetlands and deepwater habitats in the United States and its Territories. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). NWIPlus is an extension of the core NWI database that adds a set of hydrogeomorphic-type descriptors to the basic wetland coding, thereby facilitating the prediction of wetland functions. The new wetland attributes - referred to as LLWW descriptors - describe Landscape position, Landform, Water flow path, and Waterbody type. The primary source used for the NWIPlus development was 2014 NAIP leaf-on true color imagery.

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