National Wetlands Inventory

National Spatial Data Infrastructure (NSDI) Wetlands Layer:


Visit the Wetlands Layer index page for more information.

Contact Information:


You can also email the FWS Customer Service Center, or call 1.800.344.WILD (1.800.344.9453).

Download Seamless Wetlands Data

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Read First

   

Please read the Disclaimer, Data Limitations, Exclusions and Precautions, and the Wetlands Geodatabase User Caution.
 

   

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Download

 

With each watershed download you will receive a .zip file that contains the following layers:

  • Wetlands polygon data
  • Wetlands Project Metadata (includes image dates and project information)
  • Wetlands Historic Map Information*
  • Riparian polygon data*
  • Riparian Project Metadata (includes image dates and project information)*
  • Historic Wetlands*
  • Historic Wetlands Project Metadata (includes image dates and project information)*
  • USGS HUC 8 Watershed Boundary

    * If available at the requested location

State downloads only include the first three Wetlands layers mentioned above. Information about each of these layers can be found on our Metadata page.    

There are two methods for downloading seamless wetlands data as viewed on the Wetlands Mapper:

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Wetlands Mapper

The Wetlands Mapper Download Data by Watershed tool uses the Wetlands Mapper interface to interactively download a ZIP file containing a compressed file Geodatabase and Shapefile of the watershed of interest. The tool is available by visiting the Wetlands Mapper and selecting the Download Data by Watershed tool from the Tools menu.

US States

Data by State

Each State dataset is available for download as either a compressed file Geodatabase or a Shapefile

   

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View Data

 

You can view the Geodatabase and Shapefiles by using ESRI's ArcGis Explorer free software, among others. Please note that ArcGIS version 10.* is required for Geodatabase downloads.

State and watershed data downloaded will be in an equal area Albers projection with a North American Datum (NAD) of 1983.  

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