Thasae District

Geographical features

Generally, the district’s area is mountainous. In the north is the basin between mountains. The land slopes downward into be flatland in the south which is suitable for the agriculture. in the west is the mountain ranges which serve as an international border. There are many rivers and canals here. Among them are, for example, Tha Sae Canal which originates from Kratha Krob Mountain, Bang Saphan District of Prachuap Khiri Khan Province. It runs through Song Phi Nong Subdistrict, Tha Sae District, Salui, Hong Chareon, Sap-anan, Khuring, Tha Sae, and Nakratam. Another main canal is Rap Ro canal which originates from Tanao Sri Mountain Range in the northwest of the District, and runs into flatland in Rap Ro and Tha Kham Subdistricts in the south of Tha Sae District. The canal merges with Tha Sae Canal at Na Kra Tam Subdistrict, and becomes Tha Ta Phao River, then runs into the Gulf of Thailand at Mueang District, Chumphon Province. As a result, Tha Sae District and Mueang District are always flooded. In the west along the boederline is high mountains where the inhabitants grow coffee. As for the flatland, it is used for growing other plants, such as, palm, and rubber trees. The flatland in the south is mostly the rice fields.


In general, there are 2 seasons which are summer and rainy seasons. In rainy season, it rains heavily almost 7-8 months. Then, there will be a short summer. This climatic feature is due to the influence of the two monsoons, which are, northeast and southwest winds.


According to the Local Administration Act of 1914, Tha Sae is divided into 10 subdistricts, 116 villages, as the following details,

Tha Sae Subdistrict

18 Villages

Tha Kam Subdistrict

15 Villages

Hin Kaew Subdistrict

6 Villages

Khu Ring Subdistrict

7 Villages

Salui Subdistrict

8 Villages

Na Kra Tam Subdistrict

11 Villages

Rap Ro Subdistrict

23 Villages

Sap-anan Subdistrict

7 Villages

Hong Chareon Subdistrict

14 Villages

Song Phinong Subdistrict

7 Villages
Important natural resources

Tha Sae District covers the total area of 1,485 square kilometers. Regarding the local natural resources, the details are as follows,

  • Ka Poh Waterfall, with the area of 23,940 Rai
  • Rap Ro – Salui Forest, with the area of 198,442 Rai
  • The northern side of Prince of Chumphon Wildlife Sanctuary Park, with the area of 190,789 Rai
  • The southern side of Prince of Chumphon Wildlife Sanctuary Park, with the area of 90,051 Rai
  • Salui – Tha Sae Garden (timber industry), with the area of 6,671 Rai.
Agriculture and industry

The main agricultural products are palm, coffee, and rubber

The main water resources are Tha Sae and Rap Ro canals