Kashmir floods
Rescue workers help flood victims into a boat, after heavy rain in Wazirabad, in Gujranwala on September 7, 2014.Reuters/Mani Rana

More than 300 people have been killed in the worst flooding to hit India and Pakistan in half a century. Authorities have declared a national level of disaster as desperate villagers wait to be rescued from rooftops.

Kashmir floods
A couple wades through a flooded road after heavy rains in Lahore September 4, 2014.Reuters/Mohsin Raza

Army troops have reportedly reached more than 3,000 people across the Kashmir valley, supported by 25 helicopters and seven aircraft. The worst affected flooded areas in Pakistan include Jhelum, Sarai Alamgir and Sialklot.

kashmir floods
A flood victim searches among the debris of a house destroyed by a flood, caused by heavy rain, in Wazirabad, in Gujranwala September 7, 2014.Reuters/Mani Rana

Omar Abdullah, Kashmir's chief minister, has warned people to move to the highest point in their home promising to rescue them: "We are doing the best we can under the circumstances," he said on social media. "Please don't panic. We will reach you. I promise."

Kashmir floods
A rescue worker steers a a boat as flood victims wait for their turn in floodwaters in Gujranwala on September 7, 2014.Reuters/Mani Rana

Hospitals, army bases and large areas of crops have been ruined since the Jhelum river broke its banks.

kashmir floods
A general view of a flooded road after heavy rains in Lahore September 5, 2014.Reuters/Mohsin Raza

More than 100 people have been killed in Pakistani Kashmir and Punjab. A police official in the city of Srinagar told Agence France Presse the extent of the devastation was not yet known because phone networks were down and areas cut off.

kashmir floods
A Kashmiri man evacuates an elderly woman to a higher ground at a flooded road in Srinagar September 7, 2014.Reuters/Danish Ismail

In Indian Kashmir, around 2,500 villages were either partially or completely under water.

"Many people may have died and houses collapsed but we are not getting to know much," the police officer said describing the situation as "catastrophic".

Indian Prime Minister Narendra Modi has declared the floods a "national level disaster" and promised almost $200m in aid and compensation.

kashmir floods