Provisions modification and definition requirement for calcareous fens

This bill modifies Minnesota's protections for calcareous fens - special wetland areas with unique ecological value - by requiring the Department of Natural Resources to define them through rulemaking and submit a detailed report by December 2025. It clarifies that filling, draining, or degrading these fens requires commissioner approval under a management plan, with temporary water use allowed seasonally under specific conditions. The bill also mandates that permit denials affecting fens must be accompanied by a report detailing the fen's ecological benefits and potential impacts. These changes directly affect land developers, landowners, and agencies handling permits near calcareous fens, while requiring the state to standardize protections and document ecological significance.