The death toll in the floods which struck Indonesia last week has now climbed to 631 on Tuesday, with rescue workers still battling to reach affected areas. The floods, which were caused by a rare cyclone that had formed over the Malacca Strait, have hit three provinces and impacted some 1.5 million people, according to the government's disaster agency. Nearly 500 people remain missing, while thousands more have been injured. Indonesia is just one part of Asia which has been hit with torrential rain and storms in recent days, with Thailand, Malaysia, and Sri Lanka all also reporting deaths. In Indonesia, the provinces of Aceh, North Sumatra, and West Sumatra have been hardest hit, with thousands still cut off and without critical supplies. About one million people have been evacuated, the National Disaster Mitigation Agency said. Arini Amalia, a resident from Aceh's Pidie Jaya Regency, told the BBC the flood waters had been 'like a tsunami'. 'According to my grandmother, this is the worst, the worst in her life,' Amalia said. Aid workers have been trying to reach people on foot and by motorcycle, as many roads are impassable to larger vehicles. Pictures from the region show bridges washed away, roads covered in mud and debris, and logs piled high. At West Sumatra's Twin Bridges landmark, where flood waters swept through and deposited enormous amounts of mud and debris, Mariana watched as excavators cleared the roads, hoping they would find her missing family members including her 15-year-old son. 'Watching the excavators, seeing how thick the mud is... I keep thinking, what condition will my child be in when they find him?' she said. 'Will he still be intact? My mother, my brother-in-law... Looking at how it is here, maybe their faces won't even be recognizable anymore.' Many are still waiting for food aid, with some saying they have not eaten for two to three days. Criticism of the government's response has grown, with many accusing authorities of being ill-prepared for the floods. President Prabowo Subianto has stated, 'We face this disaster with resilience and solidarity. Our nation is strong right now, able to overcome this.'