Manoir du Lac Delage shoreline

Ecological restoration and enhancement of a manor’s shoreline, to protect the lake’s water quality.

The context

Lac Delage, north of Québec City, is part of the upper watershed of the Saint-Charles River, monitored for water quality since 2010. The Manoir site has been designated a particularly sensitive area: the lake is becoming enriched with phosphorus, lacks oxygen, and its riparian buffers are degraded.

The project

• Ecological restoration: removal of about 100 m of low wall and two concrete staircases, gentle regrading of the slope toward the lake and stabilization with a biodegradable erosion-control blanket
• Riparian buffer 15 to 25 m wide, planted in three layers over about 2,300 m²
• Enhancement: a path that channels walkers and preserves lake views, a new dock and lighting
• Upstream stormwater management, to reduce the flow of polluted water into the lake

Our work

Youssef El Saai, landscape architect and founder of Scaliance Studio, is part of the multidisciplinary design team: landscape architecture, ecology, biology and civil engineering.

At a glance

• Shoreline restoration and water quality
• About 2,300 m² of planted riparian buffer
• Multidisciplinary team