Second Nature Residential Development

TOWN OF
THE BLUE MOUNTAINS

280
UNITS

90
METRES OF CHANNEL REALIGNMENT

Tatham Engineering was retained to provide engineering design services for the Second Nature residential development (280 units) in the Town of The Blue Mountains. Included was the relocation/reconstruction of an existing watercourse at the base of Blue Mountain and a culvert replacement to improve flood conveyance. The watercourse being relocated was 90 metres in length and designated as a coldwater fishery. The natural channel design employed a riffle pool sequence and bio-engineering principles including the use of live stake planting to provide bank stability.

The culvert design included the use of a two-piece precast box culvert allowing machine access in the culvert to construct a low flow channel and place substrate material. Once placed, the top portion of the box culvert was installed. This method resulted in reduced footing depth, reduced dewatering efforts, accelerated construction schedule and significantly lower construction costs.

All works were approved by the Grey Sauble Conservation Authority, the Department of Fisheries and Oceans, and the Town, and constructed outside the applicable restricted timing windows for protection of fish.