The Kampar Kiri River is a river in central Sumatra, Indonesia, about 900 km northwest of the capital Jakarta.

[3] During wet seasons, the high rainfall causes the Kampar Kiri River to flood the surrounding area, especially with the addition of high discharge from the Subayang River in its upstream.

[4] The river flows in the central area of Sumatra with predominantly tropical rainforest climate (designated as Af in the Köppen–Geiger climate classification).

The warmest month is May, when the average temperature is around 24 °C, and the coldest is January, at 22 °C.

The wettest month is November, with an average of 443 mm rainfall, and the driest is June, with 137 mm rainfall.