Monsoon season in Nepal, which usually starts in June, causes deadly flooding and landslides across the country every year. With many slopes now especially vulnerable to landslides and more rain on the way the situation in Nepal can only get worse.

http://thewatchers.adorraeli.com/2015/06/11/deadly-floods-and-landslides-hit-eastern-nepal-as-monsoon-season-starts/


Even before the latest earthquakes, those were on the rise as shifting weather patterns increased the chances of flooding from melting glaciers, more intense monsoon rains and the bursting of glacial lakes when their banks collapsed.

http://www.abc.net.au/news/2015-05-13/threat-of-more-landslides-floods-in-nepal-after-quakes/6465848


In Nepal, eighty-four people were killed by the floods and resulting landslides and 9,700 families were displaced. Twenty-eight of the country's seventy-five districts were affected,^[5] in eleven of Nepal's fourteen zones and all five of Nepal's regions. Nepali officials were concerned about the spread of waterborne diseases.^[7] By 7 August an estimated 333,500 people in Nepal were affected by flooding.

https://en.wikipedia.org/wiki/2007_South_Asian_floods