People were constructing barricades in Bhan Syedabad on Thursday to prevent the increasing waters from engulfing almost a third of the nation following weeks of rain, even as officials reported that 12 more people had died, bringing the death toll to 1,355.

In a crisis due to climate change that is said to have cost $10 billion in damages and affected the lives of roughly 33 million people out of a population of 220 million, hundreds of thousands have been evacuated from their homes.

As floodwaters reached the town of Bhan Syedabad in the southern province of Sindh, one of the worst-hit areas, people tried to reinforce an existing embankment.

A short distance away, Pakistan's largest freshwater lake of Manchar is dangerously close to bursting its banks, as high water levels persist despite breaches by authorities to stave off further floods in an effort that displaced 100,000 people.  

National disaster authorities said 12 deaths in the last 24 hours carried the toll to 1,355. Seven were children, who make up 481 of the dead.