Flash floods killed 109 people and some 700,000 have been affected, the National Disaster Management Authority said on Sunday.
Military engineers repaired roads and bridges in the mountainous north to help rescuers reach people cut off for weeks, the authority said.
River Indus, which flows down from the Himalayas to the Arabian Sea, flooded at several points in southern Sindh province, meteorological department chief Ghulam Rasool said.
More rain is expected, Rasool said.
Around 350,000 people have been evacuated from the banks of the Indus in past two days.
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