The purpose of the geotechnical analysis is to assess all geotechnical considerations required for the evaluation of performance and safety of the Bradwell East and West, Candle Lake, Dellwood Brook, Russell Creek, and Altawan dams.

The scope of this contract will include analyses, modelling, and recommendations for all sites. All geotechnical aspects of the dams will be analyzed including the stability and seepage conditions under select loading conditions for the embankment. Other analyses, where applicable, include assessment for liquefaction potentials, assessment of filter systems, potential for foundation erodibility, assessment of emergency earth spillways to determine the erodibility and functionality during an event of activation, and review of the adequacy of slope protection and available freeboards of the embankments.

A final report for each site will be delivered as part of this work. Specific recommendations should be given on the performance and further study and/or possible rehabilitation of the dam systems. However, this scope will be limited to desktop study utilizing existing information provided by WSA; no field investigations or site visits are included.

WSA is a Treasury Board Crown corporation within the meaning of The Crown Corporations Act, 1993 (Saskatchewan) that is governed by The Water Security Agency Act (Saskatchewan). WSA is responsible for water management in the Province of Saskatchewan, which includes managing the Province’s water supply, protecting water quality, ensuring safe drinking water and the treatment of wastewater, reducing flood and drought damage, protecting aquatic habitat, and managing dams and related supply channels.