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Agencies > National Wetlands Inventory (NWI)

Last update: June 5, 2018

The US Fish and Wildlife Service (FWS) is the principal US Federal agency tasked with providing information to the public on the status and trends of our Nation’s wetlands. The US FWS National Wetlands Inventory (NWI) is a publicly available resource that provides detailed information on the abundance, characteristics, and distribution of US wetlands. NWI data are used by natural resource managers, within the US FWS and throughout the Nation,┬áto promote the understanding, conservation and restoration of wetlands.

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