Rivers of Thailand

Basin Southern West Coast

Trang River

แม่น้ำตรัง

The main river of Trang province on the Andaman coast. It rises in the Nakhon Si Thammarat Range and reaches the sea in Kantang district.

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

Key facts

Length
about 150 kmMeasured along the river on this map; official figures can differ with the method used
Source
Nakhon Si Thammarat province
Flows into
Andaman Sea, Trang province
Provinces (2)
Nakhon Si Thammarat, Trang

Trang River water level today

8 automatic gauging stations on this river, highest water relative to the bank first. As of 29 Sep 2026, 19:50

StationLocationLevel (m MSL)Of bank-fullStatusMeasured
บ้านไสหารHuai Yot District, Trang14.7868%Normal29 Sep 2026, 16:00
Trang 2Mueang Trang District, Trang0.6452%Normal29 Sep 2026, 19:50
Trang 6Ratsada District, Trang19.8237%Normal29 Sep 2026, 19:50
บ้านกลางMueang Trang District, Trang3.0936%Normal29 Sep 2026, 19:00
บ้านป่าหมากMueang Trang District, Trang1.0736%Normal29 Sep 2026, 19:00
บ้านท่าจีนMueang Trang District, Trang1.5730%Low29 Sep 2026, 19:00
บ้านท่าประดู่Huai Yot District, Trang8.1027%Low29 Sep 2026, 19:00
Trang 1Wang Wiset District, Trang6.5024%Low29 Sep 2026, 19:50

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

Frequently asked questions

Which provinces does the Trang River flow through?
The Trang River flows through 2 provinces: Nakhon Si Thammarat and Trang.
How long is the Trang River?
The Trang River is about 150 km long, measured along the river on this map. Official figures can differ slightly with the method used.
Where does the Trang River come from?
The Trang River rises in Nakhon Si Thammarat province.
Where does the Trang River reach the sea?
The Trang River flows into the Andaman Sea in Trang province.
What is the Trang River water level today?
Of 8 gauging stations, 0 are over the bank and 0 have high water. Data as of 29 Sep 2026, 19:50.
What is the Trang River called in Thai?
In Thai the Trang River is แม่น้ำตรัง.

Other rivers in the Southern West Coast basin

Kra Buri River