Bangkok is the 68th largest province in Thailand. Much of the area is considered the city of Bangkok, which makes it one of the largest cities in the world. The Chao Phraya River, which stretches 372 km (231 mi), is Bangkok's main geographical feature.
In Bangkok the land is only about two meters (6.5 ft) above sea level, which makes it vulnerable to floods during the monsoon season. Often after a fairly good downpour, the overflowing of water of canals and the river over the banks is a common feature, as a result of which there are massive floods. In order to tackle this problem, the Bangkok Metropolitan Administration (BMA) has raised the banks alongside some canals to prevent water from reaching the street level. However, one thing that decidedly goes against this beautiful city is the fact that the Bangkok is rumored to be sinking an average of two inches a year, primarily because it lies entirely on a swamp.