North-northeastern region and the Arrowhead
About 75% of all of Minnesota’s wetlands are in this region, including more than 90% of the wetland acres that existed before Europeans settled here. Intact wetlands contribute to the good water quality found in the area.
Approximately 84% of the region's wetlands have high-quality, natural vegetation.
Central region and metro area
Non-native invasive plant species have taken hold or other significant changes in vegetation have occurred in 82% of the wetlands — similar to southern and western Minnesota. Invasive plant species are linked to all types of wetland impacts and can force out native plants.
Forty-three percent of the area's depressional wetlands with open water have healthy macroinvertebrates communities. Depressional wetland quality has been stable from 2007-2012.
Southern and western Minnesota
Counties in this region have lost an average of 95% of their wetlands due to artificial drainage and agricultural development. These changes are a significant reason for the poor water quality in streams and lakes in the region.
Non-native invasive plant species have replaced native plants, or other significant changes in vegetation have occurred in 82% of the wetlands in this region. Wetlands that were plowed and left to recover on their own have degraded vegetation.
Restorable wetland prioritization tool
Wetland restoration is a common approach to improve water quality in lakes and streams. The MPCA and the University of Minnesota have developed an online restorable wetland prioritization tool, which can identify restorable wetlands, prioritize areas more likely to result in sustainable wetlands, and predict the benefits of restoration.