Tazin Lake Weir Refurbishment

Project Scope

Commenced: 2015
Completed: 2015
Client: Saskatchewan Power

The Tazin River, whose headwaters arise in the Northwest Territories before dipping southward into Tazin Lake in Saskatchewan and back up again into the Taltson River, NT system, has been regulated by a dam on the outflow of Tazin Lake since 1939. PBN Nuna Contracting Joint Venture was awarded the contract for the refurbishment of the existing timber weir on the Athabasca Hydroelectric System in Northern Saskatchewan. PBN Nuna’s scope included: installation of a new sheet pile wall in front of the existing weir; and placement of granular fill to create a dam shaped structure and finishing with a Concrete Cloth face. PBN Nuna mobilized equipment by barge across Lake Athabasca followed by a heavy lift helicopter to the work site. The work was carried out by a peak crew of 8 during the period July-September 2015.