Wis. Stat. § 237.10: Rapide Croche lock.

(1) Upon entering into the lease under s. 237.06, the authority shall maintain the sea lamprey barrier at the Rapide Croche lock according to specifications of the department of natural resources in order to prevent sea lampreys and other aquatic nuisance species from moving upstream.

(2) If the authority decides to construct a means to transport watercraft around the Rapide Croche lock, the authority shall develop a plan for the construction that includes steps to be taken to control sea lampreys and other aquatic nuisance species. The authority shall submit the plan to the department of natural resources and may not implement the plan unless it has been approved by the department.