Cost of Adaptation – Sea Dikes and Alternative Strategies

2012 – Delcan for the BC Ministry of Forests, Lands and Natural Resource Operations

This report explores diking and other flood management options, along with related costs, for more than 250 km of coastal shoreline in Metro Vancouver, including the Fraser River downstream of the Port Mann Bridge. Options include new or expanded dikes, floodwalls where there is insufficient room for dikes, breakwaters or barrier islands to dissipate wave energy, restrictions on building in the floodplain and better emergency response systems. The report estimates a cost of $9.5 billion to implement flood-protection improvements in Metro Vancouver by 2100 to address sea level rise.

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