ISLAMABAD - The United Nations and Pakistan government appealed for $365 million in foreign donations Sunday to urgently help more than seven million people swamped by a second year of catastrophic floods. One year on from the countrys worst-ever floods that left more than 21 million people in need, Sindh plains have been inundated again, with some parts of the province swamped with more water than last summer. Thousands of people are stranded on hills and roofs, with the government unable to meet more than 30 per cent of funds needed for emergency rescue and relief efforts, it said in a joint news conference with the UN in Islamabad. The UN said its assessment showed that nearly every district in Sindh province had seen flooding, as well as five districts of neighbouring Balochistan province, killing 342 people and injuring 633 others so far. The $365 million appeal is only to garner initial life-saving assistance to the most affected people said the UNs humanitarian coordinator in Pakistan, Timo Pakkala. We need to look to also paving the way for some kind of a recovery for them. The water needs to be removed, he said. Nearly half a million people are living in temporary relief camps, with 1.35 million homes affected by the floodwaters. Hundreds of thousands of families needed help to recover from lost livestock or crop farming incomes, while only one quarter of Sindhs population currently has access to markets, the UN said. As much as six million acres (2.4 million hectares) of land is under water, including two million acres of arable land. Sindhs fertile lands are the countrys breadbasket. The governments response to the 2010 floods was panned for being late and insufficient, and this years disaster has raised questions over whether better flood-proofing since then could have prevented a second year of upheaval. Prime Minister Gilani has cancelled a visit to the UN General Assembly in New York to oversee aid efforts. The UN said it was working with Islamabad to get visa approval for foreign aid workers to come and help with the relief operations. The UNs food agency is scaling up its response to reach 2.5 million with food handouts next month. Many victims are also facing dire shortages of clean drinking water, leading to outbreaks of acute diarrhoea and other waterborne disease, according to the World Health Organization (WHO).