| Yom River
แม่น้ำยม
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|---|---|
Yom River in Doi Phu Nang National Park near Chiang Muan
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Map of the Chao Phraya River drainage basin showing the Yom River
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| Location | |
| Country | Thailand |
| Physical characteristics | |
| Source | |
| • location | Bun Yuen village, Pong district, Phi Pan Nam Range, Phayao Province |
| • elevation | 347 m (1,138 ft) |
| Mouth | Nan River |
• location | Chum Saeng district, Nakhon Sawan province |
• elevation | 28 m (92 ft) |
| Length | 700 km (430 mi) [1] |
| Basin size | 24,047 km2 (9,285 sq mi) |
| Discharge | |
| • location | Nakhon Sawan |
| • average | 103 m3/s (3,600 cu ft/s) |
| • maximum | 1,916 m3/s (67,700 cu ft/s) |
| Basin features | |
| Tributaries | |
| • right | Ngao River |
The Yom River (Thai: แม่น้ำยม, RTGS: Maenam Yom, pronounced [mɛ̂ː.náːm jōm]; Northern Thai: น้ำแม่ยม, pronounced [náːm mɛ̂ː.ɲōm]) 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 RangeinPong District, Phayao Province. Leaving Phayao, it flows through the Phrae and Sukhothai provinces as the main water resource of both provinces before it joins the Nan River at Chum Saeng District, Nakhon Sawan Province.
Tributaries of the Yom include the Nam Mae Phong, Ngao River, Nam Ngim, Huai Mae Sin, Nam Suat, Nam Pi, Mae Mok, Huai Mae Phuak, Mae Ramphan, Nam Mae Lai, Nam Khuan, and Nam Mae Kham Mi.
The Yom river and its tributaries drain a total area of 24,047 square kilometres (9,285 sq mi) of land (called the Yom Basin) in the provinces of Sukhothai, Phitsanulok, Phichit, Phrae, and Lampang.[2] The Yom Basin is part of the Greater Nan Basin and the Chao Phraya Watershed.
A controversial large dam was planned on the Yom River in the central area of the Phi Pan Nam mountains in Kaeng Suea Ten in 1991 but the project was later abandoned.[3] The debate about the dam was opened again in 2011.[4] Currently a proposal is being debated to build two smaller dams on the Yom River in the area instead of the Kaeng Suea Ten mega-dam.[5]
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The Yom River flows through Mae Yom National ParkinPhrae Province.
19°23′24″N 100°27′18″E / 19.39000°N 100.45500°E / 19.39000; 100.45500
