National Wetlands Inventory Update

The update of the National Wetlands Inventory (NWI) for Minnesota is being conducted through a collaborative effort coordinated by the Minnesota Department of Natural Resources. The original NWI for Minnesota was created through a U.S. Fish and Wildlife program and was based on aerial photographs that primarily date from 1979 to 1984. The NWI data are used at all levels of government, as well as by private industry and non-profit organizations for variety of uses including wetland regulation and management, land use planning, environmental impact assessment, and natural resource inventories. The NWI is the only spatially comprehensive wetland inventory for Minnesota, but it is now considerably out-of-date.

Updating the NWI was one of three key recommendations from an interagency task force that developed the Comprehensive Wetland Assessment Mapping and Monitoring Strategy (CWAMMS). The primary funding source for this effort is the Environmental and Natural Resources Trust Fund.


Project news

  • September 9, 2016 - Ducks Unlimited delivered the final updated data for northeastern Minnesota and the data have been validated and posted to the Minnesota Geospatial Commons. Ducks Unlimited is currently working on draft data for the central region of this project.
  • July 8, 2016 - Ducks Unlimited delivered the final updated data for northeastern Minnesota and the data have been validated and posted to the Minnesota Geospatial Commons. Ducks Unlimited is currently working on draft data for the central region of this project.
  • October 20, 2015 - Ducks Unlimited updated the NWI for central Minnesota and developed draft NWI data for 60% of northeastern Minnesota.
  • May 1, 2015 - St. Mary's University of Minnesota delivered the final updated NWI data for southern Minnesota.
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More information

Project documents

 Loon logo for the Environmental and Natural Resources Trust Fund