Storms provoke <a href="https://en.wikipedia.org/wiki/Saguenay_flood" id="mwAQw" rel="mw:WikiLink" title="Saguenay flood">severe flooding</a> on the <a href="https://en.wikipedia.org/wiki/Saguenay_River" id="mwAQ0" rel="mw:WikiLink" title="Saguenay River">Saguenay River</a>, beginning one of <a href="https://en.wikipedia.org/wiki/Quebec" id="mwAQ4" rel="mw:WikiLink" title="Quebec">Quebec</a>'s costliest <a href="https://en.wikipedia.org/wiki/Natural_disaster" id="mwAQ8" rel="mw:WikiLink" title="Natural disaster">natural disasters</a> ever.