AGSL GeoDiscovery

Coastal Wetlands, Northeast United States, 1977-2014

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. None. Precautions - Federal, state, and local regulatory agencies with jurisdiction over wetlands may define and describe wetlands in a different manner than that used in this inventory. There is no attempt, in either the design or products of this inventory, to define the limits of proprietary jurisdiction of any Federal, state, or local government or to establish the geographical scope of the regulatory programs of government agencies. Persons intending to engage in activities involving modifications within or adjacent to wetland areas should seek the advice of appropriate federal, state, or local agencies concerning specified agency regulatory programs and proprietary jurisdictions that may affect such activities. Acknowledgement of the U.S. Fish and Wildlife Service and (or) the National Wetlands Inventory would be appreciated in products derived from these data. This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.

Resource Link:

https://purl.stanford.edu/tq206qz6894

Identifier:

https://purl.stanford.edu/tq206qz6894

Language:

eng

Creator:

U.S. Fish and Wildlife Service

Publisher:

U.S. Fish and Wildlife Service

Provider:

Stanford

Resource Class:

Datasets

Resource Type:

Polygon data

Subject:

Wetlands, National Wetlands Inventory (U.S.), Marine habitats, Hydrography, Geoscientific Information, Environment, Inland Waters, and Oceans

Theme:

Land cover, Environment, Inland Waters, and Oceans

Temporal Coverage:

1977-2014

Date Issued:

2014

Spatial Coverage:

Connecticut, Maine, Massachusetts, New Hampshire, New Jersey, New York (State), Rhode Island, and Northeastern States

Rights:

This item is in the public domain. There are no restrictions on use.

Rights Holder:

This work is in the Public Domain, meaning that it is not subject to copyright.

Access Rights:

Public

Format:

Shapefile

Georeferenced:

false