The Commission and its partners have used inflatable and velocity barrier components in the past with mixed success. The proposed AHS structure is unique and, to date, has been the subject of considerable engineering consideration. Current designs have taken into account the GLFC’s past experiences with inflatable and velocity structures. Advances in inflatable technology . . .
The AHS is unique in that the gates can be fully lowered on the structure, thereby promoting “natural” movement of sedimewnts and woody debris through the system, which most traditional barriers impede. In addition, the ability to lower the gates should improve the ability of fish to move freely through the system during the “non-sea lamprey season.”