National Wetlands Inventory Update


Project overview

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 The NWI is the only spatially comprehensive wetland inventory for Minnesota, but it is now considerably out-of-date.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

October 20, 2015
Ducks Unlimited is beginning work on updating the NWI for central Minnesota. Ducks Unlimited has also developed draft NWI data for about 60% for northeastern Minnesota. This project area is on target for completion by spring of 2016.

May 1, 2015
St. Mary's University of Minnesota delivered the final updated NWI data for the southern region. These have been incorporated into a single geodatabase along with the data from the east-central region and the database has been posted to the Minnesota Geospatial Commons website for public access.

June 18, 2013
The final updated NWI data for the east-central region have been posted to the DNR Data Deli for public access.

Status Map

(May 2015)

  This is a status map for the NWI update project as of May 2014. The NWI update has been completed for 13-counties in east-central MN. Updates are in progress for 38 counties in southern MN and 4 counties in northeast MN.

More information

Project documents

Related documents

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