Gallant Creek Storm Sewer Upgrades

The District of North Vancouver retained Water Street to provide detailed design and construction service for upgrades to the existing storm sewer in Deep Cove.

Gallant Creek is a steep watercourse in the District of North Vancouver, BC that used to be conveyed through the town centre of Deep Cove via a 1200 mm diameter concrete culvert constructed between 1950 and 1984. Following repeat flooding events, replacement of this culvert was identified as one of the highest priorities in the District’s Integrated Storm Management Plan.

The 1800- and 2100-mm diameter, 150-m long, replacement culvert is sized to convey the 200-year climate-change adjusted design flow. The new culvert was installed in fall 2021 in a dense urban town center and includes a side-tapered inlet structure, an upgraded upstream channel, and a new 40-m long section of downstream channel designed for aesthetics, fish habitat, and flood conveyance.