The Colombier coastline is one of those rare environments that are still relatively unvisited. It also contains two of the 20 main coastal habitats of interest on the north shore of the St. Lawrence Estuary, namely the Îlets Jérémie, an area of exceptional ecological wealth, and the western shore of the Betsiamites River estuary, a fragile sandy area subject to repeated all-terrain vehicle traffic. During the workshops on coastal habitats held in September 2004, three other sectors
de Colombier were identified as habitats of interest, namely the Baie des Plongeurs at the western limit of the municipality, the Blanche River estuary and Cap Colombier.
The main objective pursued in carrying out this plan is to propose actions for the conservation and development of the Colombier coastline through an integrated approach that takes into account both the community, environmental and economic aspects of the region while emphasizing the preservation of sensitive ecological sectors.