A Hennepin County farmer with a long record of wetland violations has been ordered to stop clearing trees and vegetation along the South Fork of Rush Creek in Corcoran. This is just the latest enforcement action against the man, who in 2017 installed drainage tile and dug a ditch to drain 11 acres of protected wetlands, work that a senior Hennepin County environmentalist described as "the most blatant violation of wetland laws in my 40 years of working with wetlands." Mayers signed a 2021 settlement with the city of Corcoran but never complied with it — leaving the ditch unfilled and no wetland credits purchased. Neighbors say the recent creek work has already filled a nearby pond with silt. The story is a stark illustration of what's at stake when public waters go unidentified, unprotected, or both.
That's what makes the Public Waters Inventory update through the Minnesota DNR so important. The DNR has published a 60-day public comment period for proposed updates to the Public Waters Inventory (PWI) in Brown, Chisago, Crow Wing, and Douglas counties, and has notified officials in Carver, Chippewa, Grant, and Pine counties that updates are beginning there as well. The PWI is the legal tool that determines which lakes, wetlands, and streams qualify as "public waters" under Minnesota law — and which therefore carry the full weight of state protections and permitting requirements. How the PWI tool is used in these four counties will set a precedent for how the rest of the state will be treated.
The inventory was first created in the 1980s, and the DNR launched this eight-year effort in 2024 to update it. The agency aims to update roughly 12 counties per year, with the full project wrapping up by 2032. Residents, landowners, and local officials in counties currently under review are encouraged to participate in the comment process — because an accurate PWI is what gives regulators the tools to act when violations like the one in Corcoran occur. Preliminary maps and details about the comment period for Brown, Chisago, Crow Wing, and Douglas counties are available at mndnr.gov/pwi-update. Questions can be directed to pwi.update.dnr@state.mn.us.
When a water body isn't on the inventory, enforcement gets harder and the legal protections that wetlands provide — flood control, wildlife habitat, and water quality — can be difficult to defend in court or in settlement negotiations. The Corcoran case, now stretching nearly a decade, shows what can happen when violations go unresolved. A stronger, more current Public Waters Inventory won't guarantee compliance, but it gives communities a clearer legal foundation to demand it. If your county is under review, use your voice and knowledge to help keep protect Minnesota’s waters.