Floods triggered by heavy monsoon rains are causing havoc in western, central and southern India.
The military is using helicopters to help hundreds of thousands of displaced flood victims.
Reports from the region say floods have killed more than 170 people over the past week in the western states of Gujarat and Maharashtra and the southern state of Andhra Pradesh.
The worst hit region is in Gujarat state. Indian television channels showed stories of most homes under water in Surat, the main industrial town of the state where floodwaters have shut down hundreds of industrial units. So far more 300,000 people have been moved to higher places.
Several regions of Madhya Pradesh and Chhattisgarh states in central India have also been inundated.
In neighboring Pakistan, flash floods triggered by torrential rain have also killed more than 155 people over the past week in northwestern districts, submerging hundreds of villages and causing extensive damage to property.
Some information for this report was provided by AFP, AP and Reuters.