More than 100 people have been killed after major flooding in Nepal and northern India.

The Independent reported that last week’s torrential downpours caused landslides and entire villages to be swept away in the flood waters. Over 100 people are still missing after the devastation.

Thousands of people have been evacuated to temporary shelters and rescue workers have begun to search for some of the missing. The worst of the rain is now thought to be over and the water has receded, aiding in the search efforts.

The Associated Press noted that Jhanka Nath Dhakal of the National Emergency Operation Center said that relief supplies have been transported by helicopter on Monday to some of the hardest-hit villages.

But, officials have become increasingly worried that the lack of drinking water could lead to an outbreak of cholera in the region. The bacterial disease is contracted from contaminated water supplies and causes severe vomiting and diarrhea. It is often fatal.

Unfortunately, hundreds of people die every year during South Asia’s monsoon season.