The Indian district magistrate did not respond to requests for comment.

Bhupendra Khatri, the police chief for Rautahat, said at least 20 people died in the district, including two in Gaur, which sits near a customs crossing. Six miles south, there were no reported deaths in the adjacent Indian town of Bairgania, which is about the same size.

Flooding did, however, kill dozens of people in other parts of Bihar. And on Monday, Indian officials said that dozens more had been killed in recent days in Uttar Pradesh and Bihar states.

People in Gaur said they were facing different problems now. In recent weeks, most homes were rebuilt, but a drought has made it difficult for farmers to regrow the crops they lost.

Ranga Lal Raut, 57, whose son, a mason, had drowned on July 13, said he was living through a nightmare.

The flooding destroyed his family’s farm plot. His son’s five young daughters no longer have a father. He dreaded next year, when the monsoon returns and brings more peril.

When there were no embankments, Mr. Raut said, water used to flow freely, “without causing any harm or destruction to us.”

“Dismantle them,” he said. “We’re not safe.”