The Canmore Flood Control Dykes were originally constructed in 1979 by Alberta Environment to provide protection to the Town of Canmore from overland flood flows on the Bow River. Inspections of the Canmore Flood Control Dykes in 2005 identified that sections of the dyke may be in need of rehabilitation due to erosion.
Klohn Crippen Berger (KCB) was awarded the contract for the preliminary design through to final design and construction administration and inspection. Preliminary design commenced with a site inspection and reconnaissance along the entire north dyke (a length of approximately 5 km) to determine potential threats to the dyke’s integrity due to bank erosion. Three sections of concern were identified as requiring a more detailed analysis. The erosion processes at these three sites were identified and potential solutions investigated including; applying structural techniques (e.g. riprap revetment), flow redirection techniques (e.g. groynes) and bioremediation techniques (e.g. large woody debris structure, willow fences, etc.). A detailed option comparison was then performed which included analyzing each solution based on a number of factors ranging from environmental and social impacts to costs and long term stability.
KCB undertook a detailed environmental assessment which included rare plant and wildlife assessments and fish habitat mapping and development of habitat compensation plans.
Final design was completed in 2011; the project tendered in June 2012; and construction completed in May 2013, about one month before devastating floods occurred in Canmore and Calgary.
- Site reconnaissance and investigation
- Undertake preliminary and detailed designs and prepare contract documents
- Provide inspection and contract administration services during construction