The Minnesota Wetland Conservation Act (WCA) was enacted in 1991 to protect wetlands not protected under DNR's public waters permit program and to provide no net loss of Minnesota's remaining wetlands.
The basic requirement is that "wetlands must not be drained or filled wholly or partially, unless replaced by restoring or creating wetland areas of at least equal public value under an approved replacement plan." Minn. Stat. 103G.222, subd. 1(a).
For state more information on the Minnesota Wetland Conservation Act please visit the MN Board of Water and Soil Resources web page by clicking here.