The Minnesota 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.