Rivers of Thailand

Basin Southern East Coast

Kolok River

แม่น้ำโก-ลก

A Thai–Malaysian border river in Narathiwat province.

Map of the Kolok River
The dark line is this river; the mid-blue lines are its named tributaries.

Key facts

Length
about 110 kmMeasured along the river on this map; official figures can differ with the method used
Source
Narathiwat province
Flows into
Gulf of Thailand
Provinces (1)
Narathiwat

Kolok River water level today

3 automatic gauging stations on this river, highest water relative to the bank first. As of 29 Sep 2026, 19:00

StationLocationLevel (m MSL)Of bank-fullStatusMeasured
บ้านบูเก๊ะตาWaeng District, Narathiwat18.3578%High29 Sep 2026, 16:00
บริเวณสะพานลันตูSu-ngai Kolok District, Narathiwat5.1255%Normal29 Sep 2026, 16:00
บ้านมูโน๊ะSu-ngai Kolok District, Narathiwat3.6252%Normal29 Sep 2026, 19:00

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

Frequently asked questions

Which provinces does the Kolok River flow through?
The Kolok River flows through 1 provinces: Narathiwat.
How long is the Kolok River?
The Kolok River is about 110 km long, measured along the river on this map. Official figures can differ slightly with the method used.
Where does the Kolok River come from?
The Kolok River rises in Narathiwat province.
Where does the Kolok River reach the sea?
The Kolok River flows into the Gulf of Thailand.
What is the Kolok River water level today?
Of 3 gauging stations, 0 are over the bank and 1 have high water. Data as of 29 Sep 2026, 19:00.
What is the Kolok River called in Thai?
In Thai the Kolok River is แม่น้ำโก-ลก.

Other rivers in the Southern East Coast basin

Chumphon RiverPak Phanang RiverSai Buri RiverBang Nara River