Flood Water which has overwhelmed the northwest and central parts of the country is "exceptionally high flood", said the officials.
Over 700 villages were flooded as water levels of 1,128,000 cusecs and 1,115,300 cusecs were recorded at the Guddu Barrage and Sukkur Barrage respectively and authorities struggled to cope with the impact of the worst deluge in 80 years.
Further, the situation will continue to be worsen as heavy rains are forecasted by the weather reporters.
Tens and thousands of people were evacuated fearing their homes would be looted. Rivers in other parts of Pakistan too continued to rise in high currents.
"Things will probably get worse before they start getting better. We are working at full speed to respond to most urgent needs of the affected populations," said Martin Mogwanja, UN Humanitarian Coordinator in Pakistan.
Prime Minister Yousuf Raza Gilani, also requested the world for more aid.
This natural fury is one of the worst since 1929 in Pakistan and the worst affected areas are Khyber-Pakhtunkhwa, where an estimated 1.5 million people are homeless.