Oyo River

The Oyo River is a river in southern Central Java and Yogyakarta, in the central south area of Java island, Indonesia.^[1] It is a tributary of the Opak River.

Oyo River Sungai Oyo, Kali Oyo, Kali Ojo, Sungai Oya, Kali Oja
Location of river mouth Show map of Java Oyo River (Indonesia) Show map of Indonesia
Location
Country	Indonesia
State	Yogyakarta
Region	Bantul Regency, Wonogiri Regency
Physical characteristics
Source
• location	Wonogiri Regency
Mouth	Opak River
• location	Bantul Regency
• coordinates	7.95583°S 110.36583°E / -7.95583; 110.36583

It was the river on which the historical palaces of Mataram were located - Sultan Agung's Karta palace, and his son's Plered palace.

Geography

The river flows in the southwest area of Java with predominantly tropical monsoon climate (designated as Am in the Köppen-Geiger climate classification).^[2] 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 January, at 22 °C.^[3] The average annual rainfall is 2970 mm. The wettest month is January, with an average of 537 mm rainfall, and the driest is September, with 22 mm rainfall.^[4]

See also

• List of drainage basins of Indonesia
• List of rivers of Java
• List of rivers of Indonesia