O’Brien Lock and Controlling Works (between mile 326 and 327), the Chicago River as far as the east side of the Ashland Avenue Bridge (between mile 321 and 322), and the Saint Lawrence River as far east as the lower exit of Saint Lambert Lock
O’Brien Lock and Controlling Works (between mile 326 and 327), theChicago River as far as the east side of the Ashland Avenue Bridge(between mile 321 and 322), and the Saint Lawrence River as far east asthe lower exit of Saint Lambert Lock