Following significant rainfall events in November 2021 and October 2024, slope failures occurred along the banks of Thain Creek in the City of North Vancouver, BC. This project focused on remediating and stabilizing the slope using 9,000 tonnes of riprap and structural infill. To support fish and aquatic life, the design incorporates rock weirs, plunge pools, and large woody debris. A comprehensive restoration plan using native plants and trees strengthens the banks, enhances natural habitat, and improves the long-term stability of the channel.
Quattro reconstructed the Thain Creek channel while reinforcing the creek banks with riprap to prevent future washouts, as well as reshaping and raising the creek bed to reduce the steep drops caused by previous storm events. These improvements slow water flow during heavy rain, increasing channel stability and reducing erosion. Quattro implemented a two-phase creek bypass diversion with a backup plan, conducted tree felling, placed 5,000 tons of riprap and 3,000 tons of infill within 45 days, and constructed boulder weirs with bentonite, along with completing an extensive landscaping scope. The team adhered to site-specific fire and spill prevention and response plans to ensure safety and environmental compliance throughout the project. Quattro also managed quality control, strict environmental monitoring, coordinated with design consultants, and prepared and submitted all required permits, documentation, and record drawings for CNV approval, ensuring the project was delivered on schedule.
- Trench excavation & tree removal
- Creek bypass system
- Riprap and filter layer installation
- Woody debris and in-stream boulders
- Environmental enhancement for fish and aquatic lives
- Site Rehabilitation
City of North Vancouver
Marine & Environmental
Excavation & Shoring
North Vancouver, BC
