Pointe du Bois Spillway Replacement

The spillway facilities at Pointe du Bois require replacement in order to maintain public and dam safety and to provide a modern and safer working environment for staff.

The Pointe du Bois spillway replacement project includes:

• A new primary spillway immediately downstream of the existing rockfill dam on the east side of the Winnipeg River;
• A new secondary spillway west of the primary spillway;
• New concrete and earthfill dams;
• Stability measures for the existing east and west gravity dams;
• Decommissioning of the existing spillway structure.

Key factors considered for the layout of the spillway were:

• Maintaining dam safety during construction;
• Protecting and maintaining existing lake sturgeon habitat;
• Limiting changes to water flow patterns and levels upstream and downstream of the spillway;
• Overall cost;
• Constructability of the project;
• Accommodating the option of building a new powerhouse at a future date.

There are no plans to rebuild the powerhouse at this time. The existing powerhouse will continue to operate with on-going activities to maintain safety and reliability. With these improvements, modern dam safety guidelines will be addressed.

More information on the Pointe du Bois generating station.
Map showing the location of the Pointe du Bois generating station.

View Pointe du Bois Tendering Opportunities.