Wis. Stat. § 88.14: Controversies between districts.

(1) If a controversy arises out of the relationship of 2 or more drainage districts that are subject to the jurisdiction of a single drainage board, the board may hold hearings and take whatever other action it considers necessary toward settling the controversy, including the issuance of orders.

(2) If a controversy arises out of the relationship of 2 or more drainage districts that are subject to the jurisdiction of 2 or more drainage boards, the boards shall attempt to settle the controversy and may hold hearings and take whatever other action they consider necessary to accomplish that objective. If the drainage boards are unable to settle the controversy, the matter shall be submitted to arbitration under ch. 788.