NYU Spatial Data Repository

Coastal Wetlands, Northeast United States, 1977-2014

Author(s):
Description:
This polygon shapefile represents the extent, approximate location and type of wetlands and deepwater habitats in the Northeastern United States between 1977 ansd 2014. These data delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). Certain wetland habitats are excluded from the National mapping program because of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters. Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats, because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands" as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps. This dataset should be used in conjunction with the Wetlands Project Metadata layer, which contains project specific wetlands mapping procedures and information on dates, scales and emulsion of imagery used to map the wetlands within specific project boundaries.The present goal of the Service is to provide the citizens of the United States and its Trust Territories with current geospatially referenced information on the status, extent, characteristics and functions of wetlands, riparian, deepwater and related aquatic habitats in priority areas to promote the understanding and conservation of these resources.
Publisher:
U.S. Fish and Wildlife Service
Place(s):
Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York (State), Rhode Island, and Northeastern States
Subject(s):
Wetlands, National Wetlands Inventory (U.S.), Marine habitats, Hydrography, Geoscientific Information, Environment, Inland Waters, and Oceans
Format(s):
Shapefile
Year(s):
1977-2014
Held by:
Stanford
Preservation record:
Variable Value
Click object on map to see data values