Opak River
| Opak River Sungai Opak, Kali Opak | |
|---|---|
 Opak River as viewed from Jetis, Bantul | |
  Location of river mouth  Opak River (Indonesia) | |
| Location | |
| Country | Indonesia |
| State | Yogyakarta |
| Region | Bantul Regency,Sleman Regency |
| Physical characteristics | |
| Source | Mount Merapi |
| Mouth | |
• location | Indian Ocean |
| Length | 65 km (40 mi) |
| Basin size | 638.89 km2(246.68 sq mi) |
Opak Riveris a river in central south area ofJavaisland, Indonesia.[1]
Hydrology
[edit]It flows from its source on the slopes ofMount Merapiin the north, heading southward and passes the west side of 9th-centuryPrambanantemple compound, located to the east ofYogyakartaand southeast ofKota Gede.
It also passes the historical locations ofPlered,Karta,andImogiribefore draining into theIndian Oceanin the southern part ofBantul.
The river runs upon Opak tectonic fault, a major tectonic fault in southern Central Java responsible for major earthquakes in the region..
The river basin that it lies in is significant as the aquifer is in a heavily populated part of Java[2]One of the tributaries isOyo River.
Geography
[edit]The river flows in the southwest area of Java with predominantlytropical monsoon climate(designated asAmin the Köppen-Geiger climate classification).[3]The annual average temperature in the area is 22 °C. The warmest month is October, when the average temperature is around 26 °C, and the coldest is January, at 18 °C.[4]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.[5]
Gallery
[edit]-
Prambanantemple on the east bank of Opak river. -
View on the Opak River. S.M. Java. -
A boat crossing the Opak River. -
Opak River's bank.
See also
[edit]References
[edit]- ^Kali Opakat Geonames.org (cc-by); Last updated 2013-06-04; Database dump downloaded 2015-11-27
- ^Purnama, Setiawan; Suyono, Suyono; Sulaswono, Budi (2007),SISTEM AKUIFER DAN POTENSI AIRTANAH DAERAH ALIRAN SUNGAI (DAS) OPAK Aquifer System and Groundwater Potency of Opak River Basin,forum geografi,retrieved5 March2014
- ^Peel, M C; Finlayson, B L; McMahon, T A (2007)."Updated world map of the Köppen-Geiger climate classification".Hydrology and Earth System Sciences.11(5): 1633–1644.Bibcode:2007HESS...11.1633P.doi:10.5194/hess-11-1633-2007.Retrieved30 January2016.
- ^"NASA Earth Observations Data Set Index".NASA. 30 January 2016.
- ^"NASA Earth Observations: Rainfall (1 month - TRMM)".NASA/Tropical Rainfall Monitoring Mission. 30 January 2016.
External links
[edit]Further reading
[edit]- (In Indonesian with English summaries)Sunarto Drs (2000),Studi geografi pertumbuhan bura dengan acuan pranata mangsa pada muara Sungai Opak dan Progo, Daerah Istimewa Yogyakarta: laporan penelitian,Lembaga Penelitian, Universitas Gadjah Mada, Departemen Pendidikan Nasional,retrieved13 April2012