[2][3] Tributaries include the Wapoga River.

The river flows in the northern area of Papua with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).

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

[5] The average annual rainfall is 5824 mm.

The wettest month is March, with an average of 733 mm rainfall, and the driest is October, with 300 mm rainfall.