Understanding and Assessing Impacts
The City of Percé, QC, faces a serious shoreline erosion problem. This is particularly troubling for the small city because tourism is an important part of the local economy and the scenic views of the shoreline are a major attraction. The shoreline is being threatened by a combination of sea level rise, loss of ice cover, and changing weather patterns. Of particular concern is the area of Anse du Sud, a central commercial, tourist, and cultural hub for the community. This area was particularly hard hit by major winter storms in 2010 and 2016 with substantial damage occurring to the recreational and tourism areas during both storms. The area was protected by a sea wall which required investments from both the local and provincial government to keep standing in the face of repeated storm events. In the absence of these protection measures, it is estimated that the shoreline would erode at a rate of roughly 15cm per year. The report by Ouranos used a cost-benefit analysis to determine the most financially efficient means of protecting the shoreline and ultimately settled on the method of replenishing the local beach with pebbles. This method is estimated to produce a net benefit of approximately $68 million over the next 50 years.