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USFWS National Wetlands Inventory

Metadata Updated: October 28, 2023

This data set represents 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), which represents a biological definition of wetlands and deepwater habitats. There is no attempt 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. Some wetland habitats may be under represented or excluded in certain areas 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 and also some deepwater reef communities (coral or tuberficid worm reefs). These habitats, because of their depth and water clarity, go undetected by most 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 boundaries, specific wetlands mapping procedures and information on dates, scales and emulsion of imagery used to map the wetlands within specific project boundaries.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

Downloads & Resources



Metadata Created Date May 31, 2023
Metadata Updated Date October 28, 2023

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date May 31, 2023
Metadata Updated Date October 28, 2023
Publisher U.S. Fish and Wildlife Service
Identifier FWS_ServCat_64394
Data First Published 2023-05-01T12:00:00Z
Data Last Modified 2023-05-01
Category Geospatial Dataset
Category Tag 16E15F51 D96E 4051 9124 75665Abdc6Ff "Arctic","Arctic Ocean, Sea Ice and Coasts","Ecosystem Vulnerability","Biodiversity","Land Cover and Land Use Water"
Public Access Level public
Bureau Code 010:18
Metadata Context
Metadata Catalog ID
Schema Version
Catalog Describedby
Data Quality True
Harvest Object Id e0c60afc-4fe6-4eb9-8b9f-d7b6b29c177b
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Homepage URL
Old Spatial -64.55,13.17,144.6,72.0
Program Code 010:028, 010:094
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Fish and Wildlife Service
Related Documents,,,,,
Source Datajson Identifier True
Source Hash 72087c5739d03e23d347c1539ab5ad854369275938e893edd883f29d534aca70
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -64.55, 13.17, -64.55, 72.0, 144.6, 72.0, 144.6, 13.17, -64.55, 13.17}
Temporal 1977-01-01T12:00:00Z/2023-01-01T12:00:00Z

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