worst monsoon floods in living memory have killed at least 800 people
and affected one million in north-west Pakistan, a local official has
Rescuers are struggling to reach inundated areas where transport and communication are down.
Peshawar, the area's largest city with a 3m-strong population, is cut off.
At least 60 people have died across the border in Afghanistan where floods affected four provinces.
Mian Iftikhar Hussain, information minister for Pakistan's
Khyber-Pakhtoonkhwa (formerly North-West Frontier) province, announced
the latest death toll. Earlier, he described the floods as the
province's worst ever.
Manuel Bessler, the head of the UN's Office for the Coordination for
Humanitarian Assistance (UNOCHA) in Pakistan, told the BBC about 1m
people's lives had been disrupted.
He could not say with certainty the full scale of the
emergency in Pakistan, as he was having trouble reaching his own offices
in some of the worst-affected areas.
UN aid workers were helping to co-ordinate efforts to provide
shelter, health care, drinking water and ready-to-eat food rations, he
There was concern, he added, that swollen rivers running
south would carry the floods to provinces like Sindh where heavy rain
was forecast in coming days.
The government declared a state of emergency as Pakistan's
meteorological department said 312mm (12in) of rain had fallen over the
last 36 hours in the north-west - the largest amount for decades.
The districts of Swat and Shangla have been inaccessible with people
left homeless and helpless after several rivers burst their banks,
washing away villages, roads and bridges. Some 45 bridges were washed
away in Swat alone.
The BBC's Lyse Doucet, who is travelling through some of the
worst-hit areas, says at least half a million people remain marooned on
islands of high ground, while others have taken refuge in mosques and
TV footage taken from helicopters flying over the flooded
landscape showed people clinging to roof-tops as raging torrents swept
through the streets.
Military and rescue workers have been using helicopters to
deliver essential supplies to areas that have had transport and
communication links cut off.
Some 17 helicopters were in action to airlift people out of
the worst affected areas on Friday and more were being deployed over the
Swathes of farmland have been inundated, and some power
supplies have been cut after people were electrocuted by the water-borne
Many of those hit hardest by the flooding are the rural poor
who live in flood-prone areas because they cannot afford safer land.
Pakistan has not made a formal request for international aid,
but it is understood that it has appealed to donors to help it respond
to this disaster.
In Afghanistan, the national army said it had rescued 5,000
people over the past three days, using helicopters, vehicles and
The provinces of Laghman, Nangarhar, Kunar and Logar have all been hit by the bad weather.
There were plans to deliver food and medicine on Monday but the mountainous terrain was hindering the effort.
In Eastern Logar province, a provincial spokesman told the
BBC that 10 people had been killed overnight. Nomad communities had lost
tents and livestock, he added.
In Kama, Nangarhar, local resident Haji Baqi told the BBC: ''We lost all of our food.
"I lost three wheat harvests, our bridges have been
destroyed. We want the government to come and help. What will people eat
for the rest of the year? Where is the government? When are they going
to help us.''