| Sambas River | |
| Name Other: | Sungai Sambas, Sungai Sambas Besar |
| Pushpin Map: | Indonesia Kalimantan#Indonesia |
| Pushpin Map Caption: | River mouth location |
| Country: | Indonesia |
| Source1 Location: | Bengkayang |
| Mouth: | South China Sea |
| Mouth Location: | Pemangkat |
| Mouth Coordinates: | 1.1906°N 108.9672°W |
Sambas River, or specifically referred to Big Sambas River (Indonesian: Sungai Sambas Besar), is a river in Sambas Regency, West Kalimantan, Indonesia.[1] The upstream is located in Kabupaten Bengkayang, flowing through the city of Sambas, continuing to Pemangkat where it discharges into South China Sea.[2]
The river is considered deep. In mouth area, the depth reaches 30 m, whereas in upstream part it is about 10 m. The width of the river is 400 m in average, while only 150 m in upstream part. The length of river is about 233 km.[3]
The river flows in the western area of Borneo island with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).[4] The annual average temperature in the area is 23 °C. The warmest month is May, when the average temperature is around 25 °C, and the coldest is January, at 21 °C.[5] The average annual rainfall is 3542 mm. The wettest month is December, with an average of 485 mm rainfall, and the driest is June, with 106 mm rainfall.[6]