Dike rehabilitation

Feasibility study in Les Cèdres for Hydro-Québec

February 22, 2016
Hydro-Québec selected Hatch after a competitive bid to prepare a feasibility study and tender documents for the rehabilitation of the Les Cèdres right bank dike in Les Cèdres municipality, Québec, Canada.

The rehabilitation will correct water infiltration, improve slope stability, and mitigate the potential for collapse of the dike.

In order to prevent dam failure, the project team used a very uncommon solution consisting of an inverted filter on the downstream face of the dike. To prevent infiltration, water was piped through the foundation, and a layer of sedimentary shale material was added to the upstream face.