SECSC Global Change Monitoring Portal

 National Wetlands Inventory (NWI)

Description: The National Wetlands Inventory (NWI) was established to conduct a nationwide inventory of U.S. wetlands to provide biologists and others with information on the distribution and type of wetlands to aid in conservation efforts.  The NWI has been producing wetland maps and geospatial wetland data for the United States since the mid-1970s and relies on trained image analysts to identify and classify wetlands and deepwater habitats from aerial imagery. The NWI developed a wetland classification system that is now the official FWS wetland classification system and the Federal standard for wetland classification.
Status: Active - 1977 to Present
Number of Sites in Program:
Number of Sites Registered in GCMP: 16
Point of Contact: Mitch Bergeson <>
Program URL:
Data Access URL:
Sponsoring Organization(s): US Fish and Wildlife Service
Management Issue Addressed/Purpose of Sampling: Collect and maintain a national geospatial dataset of surface waters and wetlands | Project wetlands trends
Sampling Frequency: Continuous
Area Sampled: Conterminous US, Alaska, Hawaii
Monitored Parameters: Media Measurement Biological Chemical Physical
  Land Physical     Land cover

Last revised 02/11/2016