|Title: National Wetlands Inventory Plus (NWIPlus) - Southern and Southeastern New Hampshire|
|Time Period of Content: 2014||Initial Publication Date: 2017|
|Originator: New Hampshire Department of Environmental Services|
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 hydrogeomeorphic-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.
The NWIPlus mapping covers the extent of the Contoocook, Merrimack River, Nashua, and Piscataqua-Salmon Falls Watersheds (HUC codes 01070003,01070006, 01070004, and 01060003 respectively) within the state of New Hampshire. It includes coverage of 38 full 24K quads, and 47 partial 24K quads.
The NWIPlus data were developed by the Conservation Management Institute (CMI), Virginia Tech, under contract to the New Hampshire Department of Environmental Services.
|Theme Keywords: nwiplus, nwi, national wetlands inventory, water resources, wetlands, swamps, marshes, bogs, fens, hydrologic, land cover, surface and manmade features|
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