| Bongka River | |
| Name Other: | Sungai Bongka, Sungai Bangka, Salo Bongka, Sungai Kalingsu, Salo Kalingsoe |
| Pushpin Map: | Indonesia Sulawesi#Indonesia |
| Pushpin Map Caption: | Location of river mouth in Sulawesi##Location of river mouth in Indonesia |
| Source1 Location: | Central Sulawesi |
| Mouth: | Gulf of Tomini |
| Subdivision Type1: | Country |
| Subdivision Name1: | Indonesia |
| Discharge1 Location: | Near mouth |
| Discharge1 Avg: | [1] |
| Basin Size: | [2] |
The Bongka River is a river in Central Sulawesi, Indonesia, about 1700 km northeast of capital Jakarta[3] [4]
The river flows in the central area of Sulawesi island with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).[5] The annual average temperature in the area is 23 °C. The warmest month is October, when the average temperature is around 24 °C, and the coldest is April, at 22 °C.[6] The average annual rainfall is 2929 mm. The wettest month is April, with an average of 341 mm rainfall, and the driest is September, with 79 mm rainfall.[7]