Basin Yom
Yom River
แม่น้ำยม
Rises in the Phi Pan Nam Range in Pong district, Phayao province. It flows through Phrae, Sukhothai, Phitsanulok and Phichit, then joins the Nan River in Chum Saeng district, Nakhon Sawan province. It is the only one of the four main tributaries that still has no large dam across its main channel.
Key facts
- Length
- about 735 kmMeasured along the river on this map; official figures can differ with the method used
- Source
- Phayao province
- Flows into
- Nan River, Nakhon Sawan province
- Basin
- Yom
- Provinces (6)
- Phayao, Phrae, Sukhothai, Phitsanulok, Phichit, Nakhon Sawan
- Tributaries on the map
- Ngao River
Yom River water level today
24 automatic gauging stations on this river, highest water relative to the bank first. As of 15 Nov 2026, 04:50
| Station | Location | Level (m MSL) | Of bank-full | Status | Measured |
|---|---|---|---|---|---|
| บางระกำ | Bang Rakam District, Phitsanulok | 36.95 | 76% | High | 15 Nov 2026, 03:00 |
| บางระกำ | Bang Rakam District, Phitsanulok | 36.96 | 76% | High | 15 Nov 2026, 03:00 |
| Chum Saeng Songkhram Communuty | Bang Rakam District, Phitsanulok | 38.51 | 75% | High | 15 Nov 2026, 04:50 |
| ต.ธานี | Mueang Sukhothai District, Sukhothai | 48.25 | 65% | Normal | 15 Nov 2026, 03:00 |
| Yom 12 | Mueang Sukhothai District, Sukhothai | 48.17 | 61% | Normal | 15 Nov 2026, 04:50 |
| สามง่าม | Sam Ngam District, Phichit | 34.90 | 59% | Normal | 15 Nov 2026, 03:00 |
| Yom 7 | Kong Krailat District, Sukhothai | 39.58 | 54% | Normal | 15 Nov 2026, 04:50 |
| บ้านกง | Kong Krailat District, Sukhothai | 39.91 | 53% | Normal | 15 Nov 2026, 03:00 |
| Yom 9 | Pho Prathap Chang District, Phichit | 29.96 | 44% | Normal | 15 Nov 2026, 04:50 |
| บ้านคลองตาล | Si Samrong District, Sukhothai | 49.48 | 40% | Normal | 15 Nov 2026, 03:00 |
| หน้าอำเภอโพทะเล | Pho Thale District, Phichit | 26.37 | 37% | Normal | 15 Nov 2026, 03:00 |
| บ้านทุ่งหนอง | Chiang Muan District, Phayao | 258.76 | 33% | Normal | 14 Nov 2026, 12:00 |
| บ้านห้วยสัก | Song District, Phrae | 182.69 | 33% | Normal | 14 Nov 2026, 12:00 |
| Yom 10 | Mueang Phrae District, Phrae | 144.98 | 32% | Normal | 15 Nov 2026, 04:50 |
| Nong Chan Bridge | Song District, Phrae | 172.05 | 32% | Normal | 15 Nov 2026, 04:50 |
| Chao Pho Phaya On Shrine | Song District, Phrae | 183.43 | 31% | Normal | 15 Nov 2026, 04:30 |
| บ้านวังชิ้น | Wang Chin District, Phrae | 95.27 | 29% | Low | 14 Nov 2026, 12:00 |
| Yom 4 | Den Chai District, Phrae | 139.06 | 26% | Low | 15 Nov 2026, 04:50 |
| บ้านน้ำโค้ง | Mueang Phrae District, Phrae | 145.29 | 26% | Low | 14 Nov 2026, 12:00 |
| Yom 6 | Sawankhalok District, Sukhothai | 49.79 | 26% | Low | 15 Nov 2026, 04:50 |
| บ้านวังขอนไม้ | Sawankhalok District, Sukhothai | 52.82 | 23% | Low | 15 Nov 2026, 03:00 |
| Yom 3 | Nong Muang Khai District, Phrae | 153.94 | 19% | Low | 15 Nov 2026, 04:50 |
| Yom 8 | Bang Rakam District, Phitsanulok | 31.66 | 19% | Low | 15 Nov 2026, 04:50 |
| Yom 5 | Si Satchanalai District, Sukhothai | 60.43 | 15% | Low | 15 Nov 2026, 04:50 |
Data from the National Hydroinformatics Data Center (ThaiWater), HII, refreshed every 10 minutes
Frequently asked questions
- Which provinces does the Yom River flow through?
- The Yom River flows through 6 provinces: Phayao, Phrae, Sukhothai, Phitsanulok, Phichit and Nakhon Sawan.
- How long is the Yom River?
- The Yom River is about 735 km long, measured along the river on this map. Official figures can differ slightly with the method used.
- Where does the Yom River come from?
- The Yom River rises in Phayao province.
- Which river does the Yom River flow into?
- The Yom River flows into the Nan River in Nakhon Sawan province.
- What is the Yom River water level today?
- Of 24 gauging stations, 0 are over the bank and 3 have high water. Data as of 15 Nov 2026, 04:50.
- What is the Yom River called in Thai?
- In Thai the Yom River is แม่น้ำยม.