Major Floods in Bihar, India

The Kosi river, a tributary of the Ganges in the Indian State of Bihar did something earth shattering this monsoon season. It burst through its banks to flow into a channel it had abandoned more than 200 years ago. The flooded channel swept over a region not accustomed to flooding and forced more than a million people from their homes.

These images below explain what exactly happened:

Here's a Google Maps View of The Kosi River during normal times:


Here's another image from NASA Earth Observatory taken on August 8th, 2008 (before the disaster)


Here's a image from Nasa Earth Observatory taken on August 24th, 2008 showing River Kosi changing its course and flowing through the channel which was abandoned 200 years ago. Looks like more water is flowing through this channel.