At least 75 people are now known to have died due to flash floods across Nepal, Bangladesh and northeastern India.
Monsoon rains have pounded the region, affecting over one million people.
The majority of deaths so far have come in Nepal, where 55 people are known to have died as huge swathes of land were submerged and infrastructure such as roads and bridges destroyed.
Flooding in Bangladesh has badly affected overcrowded Rohingya refugee camps, with two children among the 10 that have been killed.
Ten people have also died in the Indian state of Assam as a result of the monoons, with at least 1.5 million being displaced.
Officials say that the rain has started to ease in some areas, but that a number of rivers remain above flood level.