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Historic bi-national ice study on St. Lawrence Seaway

2010-04-07

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. Results of the study were released on April 7.

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, the study revealed that the use of icebreakers to clear the shipping channel did not result in any measurable change to shoreline ice scour and/or land-fast ice breaking away from the shore.

During the three-year JOS, landowners along the shoreline being studied, which extended from the U.S. Snell Lock to the middle of Lake St. Francis, did not report any negative effects from the icebreaking activity. Moreover, the JOS revealed that the forces imposed on the shoreline due to icebreaking activities were significantly less than the forces exhibited by ice floes driven onto the shoreline by high wind conditions.

"From the Seaway's perspective, the JOS is unprecedented in terms of its cooperative nature and the thoroughness of its analysis. After three years of hard work, the Akwesasne Mohawk, the Governments of Canada and the United States, and the U.S. and Canadian Seaway entities all endorse the study's findings and recommendations." said U.S. SLSDC Administrator Collister Johnson, Jr.

He added: "We will work closely with our Akwesasne neighbors to carry out the study's recommendations."

Among the study's recommendations is that all parties involved in the JOS continue to interact on a regular basis concerning the stewardship of the waterway. In reviewing the findings, Richard Corfe, President and CEO of theSt. Lawrence Seaway Management Corporation emphasized, "The study highlights the importance of a collaborative approach to resolving issues on our shared waterway. With the correct data, informed decisions can be made, and any questions concerning the sustainability of ice management activities can be comfortably settled."

Chief Brian David of the Mohawk Council of Akwesasne stated: "We hope that this will be part of an ongoing collaboration to find a harmonious balance between ice-breaking activity and the practice of our inherent rights on the waterways."

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