More heavy rain is hampering efforts to help the 15 million people hit by floods in Pakistan.
The southern Sindh province is the latest region to be struck.
One dam has already burst and engineers warn two more are close to overflowing.
Sindh has been put on red alert as survivors wait for aid to arrive.
Thousands are without food as the waters have destroyed crops and washed away livestock.
The worst floods in Pakistan’s recent history have left two million homeless.
“The destruction caused by these floods is far greater than the 2005 earthquake,” Pakistani prime minister Yousuf Raza Gilani said.
“That’s why we are asking the world to help us. The losses we have suffered are irreparable.”
The flooding has killed at least 1,600 people since monsoon rains lashed the northwest of the country over a week ago.The water then wrought a trail of destruction as it headed south.
Forecasters predict more rain for Sindh over the next two days where authorities have declared an “imminent” and “extreme” flood threat.