Bangladesh's annual monsoon started with unusually heavy rain, intensified by a storm from the Bay of Bengal on June 9-10, 2007. By June 11, more than one-third of the southeastern coastal city of Chittagong was under water, reported the Australian Broadcasting Corporation. There was a huge amount of rivers that flow through Bangladesh. Also, the Himalars are to the right of Bangladesh, this caused it because of the amount of ice being melted and it would flow down into the rivers causing them to flood because they would raise the water level due to the ice melting.