Lake Manitoba and Lake St. Martin Outlet Channels Project

Rank 2023

88

Image Credit: Province of Manitoba

Industry Sector: Water

Project Type: Water Wastewater

Project Value: $600million

Funding Source: Public

Federal Funding: $247.5 million

Provincial Funding: $292.5 million

Province: Manitoba

City / Region: Interlake

Estimated End Date of Substantial Completion: 2025

In 2011, southern Manitoba experienced widespread flooding and Lake Manitoba experienced excessively high inflows through the Waterhen River, Whitemud River, and the Portage Diversion. Construction of the Lake Manitoba and Lake St. Martin Outlet Channels Project (Outlet Channels Project) will enhance flood protection to the surrounding area and help to strengthen Manitoba’s existing network of flood mitigation infrastructure. The $600 million flood protection Project consists of a 24.6 kilometre (km) long channel from Lake Manitoba and a 23.6 km long channel from Lake St. Martin. The Lake Manitoba outlet channel includes an inlet at Lake Manitoba and outlet at Lake St. Martin, a new water control structure with a bridge and three new bridge crossings over the outlet channel. The Lake St. Martin outlet channel includes an inlet at Lake St. Martin and outlet at Lake Winnipeg, a new water control structure with a bridge, as well as the necessary Manitoba Hydro infrastructure to power the control structure.

Project Owner: Government of Manitoba

Engineer: Hatch; KGS Group; Tetra Tech

Contractor: TBD

Environmental Services: Stantec; North/South Consultants Inc.; WSP Global Inc.; and Magellanicum Ecological Services

Other Key Players: Dillon Consulting (preliminary design and construction inspection services)

2022 Rank: 88

2021 Rank: 83

2020 Rank: 83

2019 Rank: 84

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