4DM, with HDR, awarded AAFC contract for dam safety classification and inundation mapping in Saskatchewan

The Water Infrastructure Division (WID) of Agriculture and Agri-Food Canada (AAFC) operates a diverse portfolio of water infrastructure in southwestern Saskatchewan, including thirty-three water storage projects. AAFC manages these reservoirs which were originally built from the 1930s to 1960s under the former Southwest Saskatchewan Water Supply System Development Program to serve as water storage and delivery systems to support irrigation. In conformity with the principles and practices of the Canadian Dam Association (CDA) Dam Safety Guidelines (2007), AAFC has commissioned a detailed consequence assessment of five of these structures, the Gouverneur, Admiral, Cadillac, Eastender, and Braddock dams, to be completed in early 2013.

4DM, in partnership with HDR, will be utilizing LiDAR data and orthophotography to support and conduct hydraulic dam breach modeling needed to determine the incremental flood inundation. The information from the modeling will be used to conduct consequence classification of the Gouverneur, Admiral, Cadillac, Eastend, and Braddock Dams as well as provide AAFC, where applicable, with inundation maps for use in for Emergency Preparedness Planning and Response activities.