For generations, families living in eastern Pakistan near the border with India have learned to move quickly when danger comes close.

But this year, one danger has followed another. Sharif Muhammad and his family of seven have been uprooted twice — first in the spring, when Pakistan and India briefly went to war, and again last week, when floodwaters engulfed their village.

“We know evacuation drills from border tensions,” said Mr. Muhammad, a livestock trader. “Now floods force us to carry charpoys and wheat sacks and relocate cattle to safer places. We suffer whether it is war or water.”

Thousands of families who live near the border, like Mr. Muhammad’s, were evacuated in April as tensions escalated between Pakistan and India, sparked by a terrorist attack in the Indian-administered part of Kashmir. In early May, a weeklong military conflict erupted between the two archrivals.

Mr. Muhammad’s family came home soon after the fighting stopped. But they left again last week, as the Sutlej River surged and flooded their home.