The principal

tributaries A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainag ...

of the Chao Phraya River of

Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is b ...

are the

Pa Sak River The Pa Sak River ( th, แม่น้ำป่าสัก, , Pronunciation is a river in central Thailand. The river originates in the Phetchabun Mountains, Dan Sai District, Loei Province, and passes through Phetchabun Province as the back ...

, the

Sakae Krang River The Sakae Krang River ( th, แม่น้ำสะแกกรัง, , ) is a tributary of the Chao Phraya River. It originates in Mae Wong National Park, Nakhon Sawan Province. It is long, with most of its length in Uthai Thani Province. It ...

, the

Nan River The Nan River ( th, แม่น้ำน่าน, , ) is a river in Thailand. It is one of the most important tributaries of the Chao Phraya River. Geography The Nan River originates in the Luang Prabang Range, Nan Province. The province ...

(along with its principal confluent the

Yom River The Yom River ( th, แม่น้ำยม, , ) is a river in Thailand. It is the main tributary of the Nan River (which itself is a tributary of the Chao Phraya River). The Yom River has its source in the Phi Pan Nam Range in Pong District, ...

), the

Ping River The Ping River ( th, แม่น้ำปิง, , ), along with the Nan River, is one of the two main tributaries of the Chao Phraya River. It originates at Doi Thuai in the Daen Lao Range, in Chiang Dao district, Chiang Mai province. After p ...

(with its principal confluent the

Wang River The Wang River ( th, แม่น้ำวัง, , ) is a river in northern Thailand. Geography The Wang River is long. Its waters flow from north to south. The Wang River has its source in the Phi Pan Nam Range in Wiang Pa Pao District, Chi ...

), and the Tha Chin River.Royal Irrigation Department River Gauges Report
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

. None of the tributaries of the Chao Phraya extend beyond the nation's borders.Google Earth The Nan and the Yom River flow nearly parallel from

Phitsanulok Phitsanulok ( th, พิษณุโลก, ) is an important, historic city in lower northern Thailand and is the capital of Phitsanulok Province. Phitsanulok is home to Naresuan University and Pibulsongkram Rajabhat University, as well a ...

to Chumsaeng in the north of Nakhon Sawan province. The

enters the Ping River near Sam Ngao district in

Tak province Tak ( th, ตาก, , Burmese: တာ့ခ် pronounced ak is one of Thailand's seventy-seven provinces (''changwat'') and lies in lower northern Thailand. Neighbouring provinces are (from north clockwise) Mae Hong Son, Chiang Mai, Lamphun, ...

Tributary tree

The following is a tree demonstrating the points at which the major

of the Chao Phraya River branch off from the main river and from each other. * Gulf of Thailand **Chao Phraya River (Drains into the Gulf of Thailand via the Chao Phraya Delta) ***

Noi River The Noi River ( th, แม่น้ำน้อย, , ) is a river in Thailand.Pa Sak River The Pa Sak River ( th, แม่น้ำป่าสัก, , Pronunciation is a river in central Thailand. The river originates in the Phetchabun Mountains, Dan Sai District, Loei Province, and passes through Phetchabun Province as the back ...

(Joins the Lopburi at Ayutthaya Island) ****

Lopburi River The Lopburi River ( th, แม่น้ำลพบุรี, , ) is a tributary of the Chao Phraya River in central Thailand. It splits from the Chao Phraya river at Tambon Bang Phutsa, Singburi. Passing through Tha Wung district and the town of ...

(Joins the Pa Sak at

Ayutthaya Ayutthaya, Ayudhya, or Ayuthia may refer to: * Ayutthaya Kingdom, a Thai kingdom that existed from 1350 to 1767 ** Ayutthaya Historical Park, the ruins of the old capital city of the Ayutthaya Kingdom * Phra Nakhon Si Ayutthaya province (locally ...

) ****Additional tributaries of the Pa Sak include the Muak Lek, Phung, Pa Daeng, Kong, Sonthi, Wang Chomphu, Na, Chun, Duk,

Khon Kaen Khon Kaen ( th, ขอนแก่น, ) is one of the four major cities of Isan, Thailand, also known as the "big four of Isan", the others being Udon Thani, Nakhon Ratchasima, and Ubon Ratchathani. It is the capital of Khon Kaen province and ...

, Yai, Saduang Yai, Ban Bong, Tarang and Phaya Klang Rivers. ***

(Joins the Chao Phraya at

Uthai Thani Uthai Thani ( th, อุทัยธานี, ) is a town (''thesaban mueang'') in Thailand, capital of the Uthai Thani Province, in the upper central region of the country. It includes the entire ''tambon'' Uthai Mai of Mueang Uthai Thani distr ...

) ****Tributaries of the Sakae Krang River include Huai Thap Salao and Khlong Pho. ***

(Joins the Chao Phraya at Nakhon Sawan) ****

(Joins the Nan within Amphoe Chum Saeng in the Nakhon Sawan Province) *****Tributaries of the Yom include

Pong ''Pong'' is a table tennis–themed twitch arcade sports video game, featuring simple two-dimensional graphics, manufactured by Atari and originally released in 1972. It was one of the earliest arcade video games; it was created by Allan Al ...

, Ngao, Ngim,

Sin In a religious context, sin is a transgression against divine law. Each culture has its own interpretation of what it means to commit a sin. While sins are generally considered actions, any thought, word, or act considered immoral, selfish, s ...

, Suat, Pi, Mok, Phuak, Ramphan, Lai, Khuan and Kam Mi Rivers **** Butsabong River **** Wang Pong River **** Tha Luang River (Joins the Nan at in Phichit) *****

Wat Ta Yom River The Wat Ta Yom River ( th, แคววัดตายม) is a tributary of the Nan River in Thailand. Geography This river of many names originates in the mountains of the Noen Maprang District of Phitsanulok Province where it is referred to ...

****** Tha Muen Ram River ******* Chomphu River ****

Wang Thong River The Wang Thong River ( th, แคววังทอง, , , also known as the ''Khek River'') is a river in Thailand. Its source lies in the Phetchabun Mountains in the Khao Kho District, Thailand.

(Joins the Nan at within

Phichit Province Phichit ( th, พิจิตร, , ) is one of Thailand's seventy-six provinces (''changwat'') lies in lower northern Thailand and 330 km due north of Bangkok. Neighbouring provinces are (from north clockwise) Phitsanulok, Phetchabun, Nakh ...

) ****

Khwae Noi River The River Kwai (), more correctly Khwae Noi ( th, แควน้อย, , 'small tributary') or Khwae Sai Yok (, ), is a river in western Thailand. It rises to the east of the Salween in the north-south spine of the Bilauktaung range near, bu ...

(Joins the Nan within Chom Thong, Amphoe Mueang Phitsanulok in the Phitsanulok Province) ***** Om Sing River ****** Fua River ***** Phak River **** Tron River (Joins the Nan within Uttaradit Province) **** Pat River (Joins the Nan within Uttaradit Province) ***** Phai River **** Wa River (Joins the Nan within Nan Province) **** Haet River ****

Yao River Yao or YAO may refer to: * Yao (surname), the transliteration of Chinese family names 姚, 銚, and 么 * Yao (ruler), a mythical Chinese ruler and emperor * Yao Ming, Chinese Basketball All-Star that played for the Houston Rockets * Euphrasie Koua ...

**** Hao River (Joins the Nan at Ban A Ham within Nan Province) ***** Yang River ***** Bua River **** Khun River **** Pua River **** Yao River (2) ****Additional tributaries of the Nan include the Than, Khan, Khlung, Haeng River,

Fia FIA is the Fédération Internationale de l'Automobile (English: International Automobile Federation), the world's governing body for all forms of motor sport where four or more wheels are used. Fia or FIA may also refer to: People * Fia Backs ...

, Kaem, Kap, Kleung, Bang Kaeo, Grung Grak, Ban Mung, and Sai Yoi Rivers, although the Royal Irrigation Department report provides insufficient data to link them to tributary tree. ***

(Joins the Chao Phraya at Nakhon Sawan) ****

Khlung River (2) Khlung ( th, ขลุง, ) is the southernmost district ('' amphoe'') of Chanthaburi province, eastern Thailand. Geography Neighboring districts are (from the northwest clockwise) Laem Sing, Mueang Chanthaburi, Makham, Pong Nam Ron of Ch ...

**** Suan Mak River (Joins the Ping at ) ****

Wang Chao River Wang may refer to: Names * Wang (surname) (王), a common Chinese surname * Wāng (汪), a less common Chinese surname * Titles in Chinese nobility * A title in Korean nobility * A title in Mongolian nobility Places * Wang River in Thaila ...

(Joins the Ping at ) **** Pra Dang River (Joins the Ping at ) ****

Raka River Raka can refer to: * A Turkish rendering of the Arabic geographical name Raqqa * Raka'ah, one unit of Islamic prayer, or ''Salaa'' * Raka Maomao * Rajdhani College * Raka, Burkina Faso * Raka, Tibet * Raka, Krško, a village in the Municipality ...

(Placement in tributary tree is approximate, geographical coordinates unavailable due to poor satellite resolution) ****

(Joins the Ping at in the town of Tak) *****Tributaries include Mo, Tui, Chang &

Soi ''Soi'' ( th, ซอย ) is the term used in Thailand for a side-street branching off a major street (''thanon'', th, ถนน). An alley is called a ''trok'' ( th, ตรอก). Overview Sois are usually numbered, and are referred to by th ...

Rivers **** Tak River (Joins the Ping at ) ****

Ko River A KO is a knockout in various sports, such as boxing and martial arts. K.O., Ko or Kō may also refer to: Arts and entertainment Music * KO (musician), Canadian musician who plays a fusion of hip hop and folk music * ''K.O.'' (album), a 202 ...

(Joins the Ping at ) ****

Tun River TUN or tun may refer to: Biology * Tun shells, large sea snails of the family ''Tonnidae'' * Tun, a tardigrade in its cryptobiotic state * Tun or Toon, common name for trees of the genus ''Toona'' Places * Tun, Sweden, a locality in Västra G� ...

(Placement in tributary tree is approximate, geographical coordinates unavailable due to poor satellite resolution) **** Pa River **** Chaem River (Joins the Ping at ) ****

Klang River The Klang River ( ms, Sungai Klang) is a river which flows through Kuala Lumpur and Selangor in Malaysia and eventually flows into the Straits of Malacca. It is approximately in length and drains a basin of about . The Klang River has 11 major tr ...

(Joins the Ping at ) ****

Li River The Li River or Li Jiang () is the name for the upper reaches of the Gui River in northwestern Guangxi, China. It is part of the Xijiang River system in the Pearl River Basin. The river flows from Xing'an County to Pingle County, where the ...

(Joins the Ping at ) ****

Tun River (2) TUN or tun may refer to: Biology * Tun shells, large sea snails of the family ''Tonnidae'' * Tun, a tardigrade in its cryptobiotic state * Tun or Toon, common name for trees of the genus ''Toona'' Places * Tun, Sweden, a locality in Västra Gö ...

(Placement in tributary tree is approximate, geographical coordinates unavailable due to poor satellite resolution) **** Khan River (2) (Joins the Ping at ) ***** Wang River (2) (Joins the Khan at ) **** Kuang River (Joins the Ping at ) *****

Tha River The Tha River (Nam Tha) is a river in northwest Laos, and one of the 12 tributaries on the Mekong River. It gave its name to the town of Luang Namtha Luang Namtha (''Luang Nam Tha'') ( Lao: ມ. ຫລວງນໍ້າທາ) is a district as ...

(Joins Kuang at ) ****** 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 The San ( pl, San; uk, Сян ''Sian''; german: Saan) is a river in southeastern Poland and western Ukraine, a tributary of the river Vistula, with a length of (it is the 6th-longest Polish river) and a basin area of 16,877 km2 (14,42 ...

(Placement in tributary tree is approximate, geographical coordinates presently undeterminable due to recently built dam) ****

Tip River Tip commonly refers to: * Tip (gambling) * Tip (gratuity) * Tip (law enforcement) * another term for Advice Tip or TIP may also refer to: Science and technology * Tank phone, a device allowing infantry to communicate with the occupants of an armo ...

(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) **** Sa River (Joins the Ping at ) ****

Rim River Rim may refer to: *Rim (basketball), the hoop through which the ball must pass **Breakaway rim, a sprung basketball rim *Rim (coin), the raised edge which surrounds the coin design * Rim (crater), extending above the local surface *Rim (firearms), ...

(Joins the Ping at ) ****

Nai River Nai River () or River Null is a river in Tai'an, Shandong Province, China. It merges into Dawen River, then empties into Dongping Lake. The river flows through the city of Taian. See also *List of rivers in China This incomplete list of ri ...

(Placement in tributary tree is approximate, geographical coordinates unavailable due to poor satellite resolution) **** Taeng River (Joins the Ping at ) **** Ngat River (Joins the Ping at {{coord, 19, 09, 11, N, 99, 00, 44, E, type:landmark_region:TH) ***Additional tributaries of the Chao Phraya include the Wang River (3), the Yai River (2), the Bang Kaeo River, and the Khun Kaeo River. ** Tha Chin River ***Tributaries of the Tha Chin include the Kra Sieo,

Yang Yang may refer to: * Yang, in yin and yang, one half of the two symbolic polarities in Chinese philosophy * Korean yang, former unit of currency of Korea from 1892 to 1902 * YANG, a data modeling language for the NETCONF network configuration ...

, Tawip, Chorakhe Sam, Bang Len and Chin Si Rivers. Rivers marked with a number in parentheses indicate multiple rivers in this system bearing the same name in English.

References

Chao Phraya River

Chao Phraya The Chao Phraya ( or ; th, แม่น้ำเจ้าพระยา, , or ) is the major river in Thailand, with its low alluvial plain forming the centre of the country. It flows through Bangkok and then into the Gulf of Thailand. E ...