Project proponents recognize the need for fish passage around the AHS when it is being operated as a sea lamprey barrier. A fish passage ladder, like the existing Sixth Street Dam Fish Ladder, has been designed into the proposed AHS structure and will create similar passage conditions while maintaining effectiveness as a sea lamprey barrier. Recognizing the future desires for a water trail and increased opportunities for non-motorized watercraft on the Grand River, a small craft portage is also being designed to allow passage around the AHS structure.