The U.S. Department of Transportation’s Saint Lawrence Seaway Development Corporation (SLSDC) together with Transport Canada, the Canadian St. Lawrence Seaway Management Corporation (SLSMC), the U.S. St. Regis Mohawk Tribe, and the Canadian Mohawk Council of Akwesasne have finalized a three-year Joint Observational Study (JOS) that assessed the potential impacts caused by icebreaking activities on the St. Lawrence Seaway. The study’s conclusion, endorsed by all participants, is that no adverse impacts to the shoreline could be observed as a consequence of ice breaking activity. Using a baseline characterizing the impact of natural ice break-up and clear-out…