National Wetlands Inventory
Ecological Services

Wetlands Geodatabase User Caution

limitations iconThe Wetlands Geodatabase is an ongoing effort consisting of data additions, updates, and other data modifications. All datasets utilized outside of the Wetlands Geodatabase or the Wetlands Mapper and supporting web services are only effective as of the date of extraction or delivery by the Wetlands Geodatabase Administrator. The Wetlands Mapper displays the current status of wetlands data availability.

This data set represents the extent, approximate location and type of wetlands and deepwater habitats in the United States and select U.S. trust territories.

These data were developed in conjunction with the publication Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. U.S. Department of the Interior, Fish and Wildlife Service, Washington, DC. FWS/OBS-79/31. Alpha-numeric map codes have been developed to correspond to the wetland and deepwater classifications described.

These spatial data are not designed to stand alone. They form topical overlays to the U.S. Geological Survey 1:24,000 or 1:25,000 scale topographic quadrangles or digital imagery. Note that coastline delineations were drawn to follow the extent of wetland or deepwater features as described by this project and may not match the coastline shown in other base maps. The map products were neither designed nor intended to represent legal or regulatory products.

Comments regarding the interpretation or classification of wetlands or deepwater habitats can be directed to the U.S. Fish and Wildlife Service, Division of Habitat and Resource Conservation or by following the feedback mechanism in the Information Quality Guidelines (PDF). In addition, A Request for Entry of Corrected Map Data (see forms here) may also be submitted.

Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. For additional information, product summary information, and limitations please check the metadata web page. Information regarding Product Summary and Data Limitations, Exclusions and Precautions is also available.

Last updated: May 12, 2016