Why drainage is central to the performance of a canal wall.
Pressure behind the wall
Water retained in the backfill can increase load and contribute to movement.
Blocked outlets
Landscaping, debris, silt and past repairs may reduce drainage performance.
Do not clean blindly
The wall condition and material behind it should be considered before aggressive cleaning or alteration.
Include drainage in repairs
Crack repair without addressing the water pathway may not solve the broader problem.
Important: This guide is general information only. Waterfront structures and approval requirements must be assessed for the individual property.
When to arrange a site assessment
Arrange an inspection when visible conditions are changing, safety is uncertain, a purchase or sale is approaching, or you need a reliable project scope and budget.