AlQa'dah 18, 1432, Oct 16, 2011, SPA -- Barriers protecting Bangkok from Thailand's worst floods in half a century held firm Sunday as the government said some water drenching provinces just north of the capital has begun receding, according to AP. That fueled hopes that Bangkok, a city of 9 million, could escape unharmed. But outside the capital, thousands of people remain displaced and hungry residents are struggling to survive in half-submerged towns. On Sunday, the military rescued terrified civilians from the rooftops of flooded buildings in the swamped city of Ayutthaya, one of the country's hardest-hit. Bangkok has averted calamity so far thanks to a complex system of flood walls, canals, dikes and underground tunnels that are helping divert vast pools of runoff south into the Gulf of Thailand. But if any of the defenses fail, floodwaters could sweep through the tense city. Ronnarong Wong-Ngern, a bare-chested construction worker in northwestern Bangkok, said residents there still worry that things could go wrong. Seasonal rains that drench Southeast Asia annually have been extraordinarily severe this year, killing hundreds of people across the region. Thailand has been particularly affected. Nearly 300 people have died in the country so far, while more than 200 major highways and roads have been shut, along with the main rail lines to the north. Despite widespread fears that disaster could touch Bangkok, the city has so far been mostly untouched. Heavy rains showered the capital for much of the day Sunday, but life was otherwise normal with shopping malls open and elevated trains crisscrossing the city. Nationwide, the government says property damage and losses could total $3 billion dollars or more. The most affected provinces are just north of Bangkok, including Ayutthaya, a former capital which is home to ancient and treasured stone temples. -- SPA