.jpg )
The natural disaster hit the country's northern hilly state of Uttarakhand on Sunday morning, severely damaging two hydro power projects.
Among the missing persons are 11 local villagers and around 190 workers employed at two power projects.
Also read: Glacier breaks in India’s north; flood kills 9, 140 missing
"Most of the missing persons are said to be labourers hailing from the eastern state of Bihar and northern state of Uttar Pradesh," the India Today media group quoted Uttarakhand Director General of Police (DGP) Ashok Kumar as saying.
Also read: 16 killed by lightning in India's Bihar amid flood
According to Kumar, the rescue work is focussed on a 1,800-meter long tunnel where around 35 to 40 people, mostly power project labourers, are feared trapped. The tunnel is said to be filled with several feet high slush and debris.
Also read: Flood: Farakka Committee blasts India's upstream management of common rivers
Meanwhile, according to sources at the local disaster management office, 13 villages have been cut off due to the natural disaster, and efforts are being made to reach out to them with food and medical aid.