The Mae Klong River in Samut Songkhram. This river that is formed in the tambon Ban Tai (บ้านใต้) in Kanchanaburi, by the confluence of the rivers Kwae Yai and Kwae Noi (fig.), literally the ‘Greater Tributary’ and the ‘Small or Lesser Tributary’.

From Kanchanaburi, it (fig.) flows through Ratchaburi to empty into the Gulf of Thailand in Samut Songkhram, of which the provincial emblem bears the picture of a large drum (klong) floating on the water (fig.), which is both a reference to the old name of the city, i.e. Meuang Klong, as well as to the river that flows through it.