The principal
tributaries of the
Chao Phraya River of
Thailand are the
Pa Sak River, the
Sakae Krang River, the
Nan River (along with its principal confluent the
Yom River), the
Ping River (with its principal confluent the
Wang River), and the
Tha Chin River.[1] Each of these tributaries (and the Chao Phraya itself) is further tributed by additional minor tributaries often referred to as khwae. All of the tributaries, including the lesser khwae, form an extensive tree-like pattern, with branches flowing through nearly every province in central and northern
Thailand.[1] None of the tributaries of the Chao Phraya extend beyond the nation's borders.[2] The Nan and the Yom River flow nearly parallel from
Phitsanulok to Chumsaeng in the north of Nakhon Sawan province. The
Wang River enters the Ping River near Sam Ngao district in
Tak province.
Tributary tree
The following is a tree demonstrating the points at which the major
tributaries of the
Chao Phraya River branch off from the main river and from each other.[1]
Sapuat River (Placement in tributary tree is approximate, geographical coordinates unavailable due to inaccurate station data from Royal Irrigation Department)
Khanat River (Placement in tributary tree is approximate, geographical coordinates unavailable due to poor satellite resolution)
San River (Placement in tributary tree is approximate, geographical coordinates presently undeterminable due to recently built dam)
Tip River (Placement in tributary tree is approximate, geographical coordinates presently undeterminable due to recently built dam)
Phaem River (Placement in tributary tree is approximate, geographical coordinates unavailable due to poor satellite resolution)
Mempin River (Placement in tributary tree is approximate, geographical coordinates unavailable due to poor satellite resolution)
Lai River (2) (Placement in tributary tree is approximate, geographical coordinates unavailable due to poor satellite resolution)