'Heavy monsoon rains have caused the banks of the Brahmaputra River -- one of Asia's largest -- to overflow and inundate more than 2,000 villages across Assam, according to the flood control center in the state capital Gauhati.

Indian Air Force helicopters have been delivering food and dropping off relief workers to affected areas over the past two days. The floods also submerged large swathes of a national wildlife reserve, the Kaziranga National Park, which is home to more than 2,000 of the estimated 3,000 one-horn rhinos left in the wild.'

Read more: India Floods Kill 30, Displace One Million