The Kaso River, also Ci Kaso, is a river in the Garut Regency of West Java, Indonesia, about 190 km southeast of the capital Jakarta.

[1][2] Coal-bearing sandstones, clays and limestones are typical geological traits of the Bandung area of southern Java.

[3] The river flow merges with the Cipalebuh River, near the center of Pameungpeuk, southern coastal area of Garut, West Java.

[1] The river flows in the southwest area of Java with predominantly tropical rainforest climate (designated as Af in the Köppen-Geiger climate classification).

warmest month is March, when the average temperature is around 25 °C, and the coldest is September, at 22 °C.