Rivers of Thailand

Basin Mun

Lam Se Bai

ลำเซบาย

A tributary of the Mun River in Amnat Charoen and Ubon Ratchathani provinces.

Map of the Lam Se BaiUbon Ratchathani
The dark line is this river; the mid-blue lines are its named tributaries.

Key facts

Length
about 48 kmMeasured along the river on this map; official figures can differ with the method used
Source
Ubon Ratchathani province
Flows into
Mun River, Ubon Ratchathani province
Basin
Mun
Provinces (1)
Ubon Ratchathani

Lam Se Bai water level today

3 automatic gauging stations on this river, highest water relative to the bank first. As of 29 Sep 2026, 21:50

StationLocationLevel (m MSL)Of bank-fullStatusMeasured
Yasothon 1Loeng Nok Tha District, Yasothon143.7078%High29 Sep 2026, 21:50
บ้านเชียงเพ็งPa Tio District, Yasothon124.6765%Normal29 Sep 2026, 21:00
บ้านป่าก่อKhueang Nai District, Ubon Ratchathani116.1465%Normal29 Sep 2026, 21:00

Data from the National Hydroinformatics Data Center (ThaiWater), HII, refreshed every 10 minutes

Frequently asked questions

Which provinces does the Lam Se Bai flow through?
The Lam Se Bai flows through 1 provinces: Ubon Ratchathani.
How long is the Lam Se Bai?
The Lam Se Bai is about 48 km long, measured along the river on this map. Official figures can differ slightly with the method used.
Where does the Lam Se Bai come from?
The Lam Se Bai rises in Ubon Ratchathani province.
Which river does the Lam Se Bai flow into?
The Lam Se Bai flows into the Mun River in Ubon Ratchathani province.
What is the Lam Se Bai water level today?
Of 3 gauging stations, 0 are over the bank and 1 have high water. Data as of 29 Sep 2026, 21:50.
What is the Lam Se Bai called in Thai?
In Thai the Lam Se Bai is ลำเซบาย.

Other rivers in the Mun basin

Mun RiverSiao RiverLam TakhongLam Phra PhloengLam Dom YaiLam Dom NoiHuai Thap ThanHuai Samran