Edmonton pitches $2.6-billion flood mitigation plan

City of Edmonton officials are releasing details of a suggested $2.6-billion flood mitigation plan to protect neighbourhoods against a one in 100 year cloud burst. 
These are storms that typically hit only parts of Edmonton at a time – about a five square kilometre area at a time – but they quickly overwhelm sewer lines in older areas, flooding basements and floating cars. Storms like this caused 4,000 basements to flood in Mill Woods in 2004, and 1,200 basements in the central