Riprap rehabilitation at the Cap-aux-Meules terminal, Iles-de-la-Madeleine, Quebec.

The 20 years old protective riprap of the ferry terminal at the Port of Cap-aux-Meules, at Iles-de-la-Madeleine in the province of Québec, has been recently evaluated and its ability to withstand wave action during severe storm events was judged insufficient.

During several inspection conducted, it was noted that there are many fissures in the riprap stones, it was also noted that some stones were randomly dispatched in the area along the terminal. This degradation implies a reduction in the degree of protection against certain weather conditions.

The rehabilitation of the riprap aims to protect and maintain the integrity of the terminal facilities from all weather conditions for the next 50 years. The new installation intends to assure the safety and security of the surroundings such as the port, boats and ferry while meeting the current environmental requirements. The structural integrity will be preserved by being adequately protected from wave action, and the existing containment cells will be protected.

The implementation of this project will significantly reduce wave damage as the design will anticipate the possible impacts of climate change, which may result in an augmentation of force and frequency of storm events, higher water levels and sea ice thinning.

The project therefore consists of replacing the existing stone with a good quality stone and building a berm (in two stages) at the foot of the breakwater, with an elevation of +2 m from Chart Datum at the ridge and a width of about 6 m over the entire study area. This berm will protect the breakwater from storm surge.


Latest update

The assessment is in progress.



Environmental and Aboriginal affairs - Québec region

  • Location

    • Cap-aux-Meules (Quebec)
  • Nature of Activity

    • Ports and Harbours
  • Assessment Status

    In progress
  • Start Date

  • Proponent

    Transport Canada
  • Authorities

    • Fisheries and Oceans Canada
    • Transport Canada
  • Assessment Type

    Project on federal lands
  • Reference Number


This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.


Nearby assessments

...within 200 kilometres
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