Progo River is a river in southern central Java

Java

Java is an island of Indonesia. With a population of 135 million , it is the world's most populous island, and one of the most densely populated regions in the world. It is home to 60% of Indonesia's population. The Indonesian capital city, Jakarta, is in west Java...

, Indonesia

Indonesia

Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...

. The river passed through two provinces of Indonesia; Central Java

Central Java

Central Java is a province of Indonesia. The administrative capital is Semarang. It is one of six provinces on the island of Java.This province is the province of high Human Development in Indonesia and its Points Development Index countries is equivalent to Lebanon. The province of Central Java...

 and Yogyakarta. The river source is at the slopes of Mount Sundoro

Mount Sundoro

Mount Sindara, Mount Sindoro or Mount Sundoro is an active stratovolcano in Central Java, Indonesia. Parasitic craters and cones are found in the northwest-southern flanks; the largest is called Kembang. A small lava dome occupies the volcano's summit. Historical eruptions mostly mild-to-moderate...

, Central Java. The river runs to southeast through Magelang

Magelang

Magelang is one of the largest cities of the 1,130 km² Magelang Regency, Central Java, Indonesia. It is also the largest town in the Kedu Plain between Mount Merbabu and Mount Sumbing in Central Java, Indonesia...

 city. The river runs through historical Kedu Plain

Kedu Plain

Kedu Plain is the fertile volcanic plain that lies between the volcanoes Mount Sumbing and Mount Sundoro to the west, and Mount Merbabu and Mount Merapi to the east on Central Java, Indonesia. The plain also bordering the Menoreh hills in the southwest and Prambanan Plain in the southeast...

, passed near Mendut

Mendut

Mendut is a ninth century Buddhist temple, located in Mendut village, Mungkid sub-district, Magelang Regency, Central Java, Indonesia. The temple is located about three kilometres east from Borobudur. Mendut, Borobudur and Pawon, all of which are Buddhist temples, are located in one straight line...

, Pawon

Pawon

Pawon is a Buddhist temple in Central Java, Indonesia. Located between two other Buddhist temples, Borobudur and Mendut , Pawon is connected with the other two temples, all of which were built during the Sailendra dynasty...

 and Borobudur

Borobudur

Borobudur, or Barabudur, is a 9th-century Mahayana Buddhist monument near Magelang, Central Java, Indonesia. The monument comprises six square platforms topped by three circular platforms, and is decorated with 2,672 relief panels and 504 Buddha statues...

 temples in Central Java. In Yogyakarta the river formed a natural boundary between Sleman Regency

Sleman Regency

Sleman is a regency located on the northern border of the Yogyakarta Special Region province, Indonesia. It has an area of 574.82 km² and a population of 901,400. Its capital is the town of Sleman...

, Kulon Progo Regency

Kulon Progo Regency

Kulon Progo Regency is one of the four regencies of the Yogyakarta Special Region, Indonesia. The name stems from the fact that it is located at the west of Progo River. The capital is Wates. The biggest part of population in Kulon Progo works as farmers. Kulon Progo is surrounded by Menoreh...

 and Bantul Regency

Bantul Regency

Bantul is the name of a regency and a town located in the province of Yogyakarta , Indonesia. The regency's population is approximately 800,000. Like many regions on the island of Java, it is densely populated with roughly 1,600 people per square kilometer...

. The mouth this river is located at Trisik beach, on the southern shore of Java facing Indian Ocean

Indian Ocean

The Indian Ocean is the third largest of the world's oceanic divisions, covering approximately 20% of the water on the Earth's surface. It is bounded on the north by the Indian Subcontinent and Arabian Peninsula ; on the west by eastern Africa; on the east by Indochina, the Sunda Islands, and...

.