A flash flood triggered by upstream hill runoff and continuous rainfall damaged a regional road in Patgram upazila of Lalmonirhat district, disrupting communication for around 2,000 families.

The Teesta River swelled above the danger level on Wednesday evening, causing a sudden flood that inundated at least six localities in Dahagram Union.

However, the water began receding from Thursday morning.

According to local residents, the Teesta's water level rose by two to three feet within a few hours due to heavy upstream flows from India, flooding several areas in Wards 1, 2 and 3 under Dahagram Union.

The flood submerged around 500 acres of transplanted Aman paddy fields, local people said.

However, the Department of Agricultural Extension in Patgram said the crop did not suffer significant damage as the floodwater receded within a few hours.

As the floodwater receded on Thursday, the approach roads on both sides of a bridge over the Sakoa River in the Sristiarpar area of Ward No. 1 were damaged.

A nearly 20-foot stretch of the regional paved road connecting Sistiarpar with Angarpota and Patgram collapsed, leaving a crater about 10 feet deep, according to locals.

The damage has cut off road communication for nearly 2,000 families in Dangapara, Mistripara, Pradhanpara, Olerpar and Sakoapara villages under Wards 2 and 3, causing hardship for residents, including children, elderly people and those with livestock.

"Asad Mia, a resident of Ward No. 3, said they found the road washed away on Thursday morning.

"It will be impossible to travel unless the road is repaired. There is also a risk of falling into the large crater while trying to cross," he said.

Patgram Upazila Nirbahi Officer (UNO) Tanvir Hossain said he had spoken with the executive engineer of the Roads Department after learning about the road damage.

"The Roads Department has assured us that the damaged section will be repaired as soon as possible," he said.