Hydro-Québec has introduced the beginning of the draft design forward of the challenge to overtake Coteau-1 and Coteau-3 dams, that are almost a century previous, to make sure their long-term operability and enhance their capability in compliance with present requirements.
Potential challenge situations might be assessed throughout the draft design, which might be accomplished in 2026. The next phases will embody the preliminary work after which the rehabilitation itself, which is anticipated to begin in 2029.
The draft design goals mainly to determine the optimum plan of action and consists of:
Consulting native Indigenous and non-Indigenous communities to develop a challenge that integrates their objectives.Coordinating all research required to outline the technical content material, constraints, allowing necessities and impacts on the surroundings.Growing of the challenge execution technique.Figuring out and managing challenge dangers.
“This draft-design research is a primary step in the direction of the modernisation of the Beauharnois–Les Cèdres complicated. Within the a long time forward, our infrastructure renovations would require investments, and we need to contain stakeholders from the outset to make sure the challenge’s social acceptability,” stated Yannick Chevrier-Bédard, Supervisor – Building Initiatives.
Constructed by the Beauharnois Mild, Warmth and Energy Firm, Coteau-1 (in-built 1933) and Coteau-3 (in-built 1940) are two of 4 dams designed to control water ranges in Lac Saint-François and facilitate the stream to the Canal de Beauharnois and the headrace canal for Les Cèdres producing station.
Spanning 320 m, Coteau-1 dam has 20 openings with 18 gates. Coteau-3 dam is 270 m lengthy and has 16 gates. The mandatory rehabilitation work is a part of a broad portfolio of main investments to modernise the Beauharnois–Les Cèdres complicated and might be carried out along with the precedence work that started in 2021 primarily based on surveys of all of the constructions on the Fleuve Saint-Laurent (St. Lawrence River) and Canal de Beauharnois.
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