Grogol River

{{Short description|River in Indonesia}} {{Infobox river | name = Grogol River | name_native = {{native name|id|Kali Grogol}} | name_native_lang = | name_other = | name_etymology =  | image = Map of rivers and canals in Jakarta 2012.jpg | image_size = | image_caption = Grogol River ("''K. Grogol''"), lower left in the map of rivers and canals of Jakarta (2012) | map = | map_size = 285 | map_caption = | pushpin_map = Indonesia Java#Indonesia | pushpin_map_size = 285 | pushpin_map_caption= Location of the mouth  | subdivision_type1 = Country | subdivision_name1 = Indonesia | subdivision_type2 = State | subdivision_name2 = Jakarta | subdivision_type3 = | subdivision_name3 = | subdivision_type4 = | subdivision_name4 = | subdivision_type5 = | subdivision_name5 =  | length = {{convert|23.45|km|mi|abbr=on}} | width_min = | width_avg = | width_max = | depth_min = | depth_avg = | depth_max = | discharge1_location= | discharge1_min = | discharge1_avg = | discharge1_max =  | source1 = | source1_location = Kedungbadak, Bogor, West Java | source1_coordinates= | source1_elevation = | mouth = Angke River, Banjir Kanal Barat | mouth_location = | mouth_coordinates = {{Coord|06|08|10|S|106|47|07|E|display=inline,title}} | mouth_elevation = | progression = | river_system = | basin_size = | tributaries_left = | tributaries_right = | custom_label = | custom_data = | extra = }} The '''Grogol River''' ('''Kali Grogol''') is a small river in the western part of the Special Capital Region of Jakarta, Indonesia.<ref>{{GEOnet2|32FA8815F9963774E0440003BA962ED3|Kali Grogol Approved - N)}}, United States National Geospatial-Intelligence Agency</ref><ref>[http://www.geonames.org/1643759/kali-grogol.html Kali Grogol] - Geonames.org.</ref> The lower portions of the original river have been channelized with levees built along its banks,<ref>{{Cite news|title=Amphibian Excavator Used to Dredge Grogol River|date=15 April 2013 |newspaper=Berita |url=http://www.jakarta.go.id/eng/news/2013/04/amphibian-excavator-used-to-dredge-grogol-river |archiveurl=https://web.archive.org/web/20150319021303/http://www.jakarta.go.id/eng/news/2013/04/amphibian-excavator-used-to-dredge-grogol-river |archivedate=19 March 2015|url-status=dead}}</ref><ref name="Dam">{{Cite news |author=Simanjuntak, T. P. Moan |title=Grogol River Dam on Jl. S Parman Elevated |date=10 February 2014 |newspaper=Berita |url=http://beritajakarta.com/en/read/554/Grogol_River_Dam_on_Jl_S_Parman_Elevated |archiveurl=https://web.archive.org/web/20150320023829/http://beritajakarta.com/en/read/554/Grogol_River_Dam_on_Jl_S_Parman_Elevated |archivedate=20 March 2015 |url-status=live }}</ref> but flooding remains a real concern.<ref name="Dam" /><ref>{{Cite news |author=Rio |title=Cegah Banjir, Kali Grogol Dikeruk (To Prevent Floods, Grogol River Dredged) |language=id |date=April 2013 |newspaper=Berita |url=http://www.jakarta.go.id/v2/news/2013/04/cegah-banjir-kali-grogol-dikeruk |archiveurl=https://web.archive.org/web/20160304053507/http://www.jakarta.go.id/v2/news/2013/04/cegah-banjir-kali-grogol-dikeruk |archivedate=4 March 2016 |url-status=live }}</ref> Illegal buildings built along its banks were removed in 2014,<ref name="Lusianawati">{{Cite news|author=Lusianawati, Devi |title=Post-Demolishment, Grogol River Dirtied by Trashes |date=19 September 2014 |url=http://beritajakarta.com/en/read/3341/Post-Demolishment_Grogol_River_Dirtied_by_Trashes |archiveurl=https://web.archive.org/web/20150319153647/http://beritajakarta.com/en/read/3341/Post-Demolishment_Grogol_River_Dirtied_by_Trashes |archivedate=19 March 2015|url-status=live}}</ref> and fifty-eight village families were provided with replacement housing, but most of them could not be accommodated.<ref>{{Cite news|author=Simanjuntak, T. P. Moan |title=Kantor Kelurahan Palmerah Diserbu Warga (Palmerah Village Office Invaded by Residents) |language=id |publisher=Berita |url=http://www.jakarta.go.id/v2/news/2014/10/kantor-kelurahan-palmerah-diserbu-warga|archiveurl=https://web.archive.org/web/20150319205731/http://www.jakarta.go.id/v2/news/2014/10/kantor-kelurahan-palmerah-diserbu-warga|archivedate=19 March 2015|url-status=dead}}</ref>

==Course== The Grogol River arises around {{Coord|06|33|39|S|106|47|26|E|display=inline}} in Desa Kedungbadak and runs north between the Krukut River<ref>{{GEOnet2|4B17553AEBF82FCCE0440003BA962ED3|Kali Krukut Satu (Approved - N)}}, United States National Geospatial-Intelligence Agency</ref> to the east and the Pasanggrahan River to the west, further north the Sekretaris River<ref>{{GEOnet2|4B17553AEAA12FCCE0440003BA962ED3|Kali Sekretaris (Approved - N)}}, United States National Geospatial-Intelligence Agency</ref> arises to the west. The Grogol passes through Desa Sukadamai and Desa Kencana. After crossing the Jakarta Outer Ring Road (''Jalan Tol Lingkar Luar Jakarta'') it follows parallel to and just east of Route 12. At {{Coord|06|15|41|S|106|47|07|E|display=inline}} there is an overflow channel that goes west to the Pasanggrahan River. The Grogol continues north through Senayan City and just west of Gelora Bung Karno Stadium. It serves as a drain for Palmerah Urban Village.<ref name="Lusianawati" /> Beginning at Bank Danamon Central Park it parallels Route 1 until {{Coord|06|10|02|S|106|47|16|E|display=inline}} where an overflow channel heads due west to join the Sekretaris River, while the channelized river continues beside Route 1 and flows into the Angke River at {{Coord|06|08|10|S|106|47|07|E|display=inline}}.

==Hydrology== The Grogol River has a length of {{convert|23.45|km}}, with the watershed area ({{Langx|id|Daerah Pengaliran Sungai}}) of 32.08 km<sup>2</sup>.<ref name=bbwsciliwung/> The average daily rainfall is 144 mm, with the peak flow rate at 290 m<sup>3</sup> per second.<ref name=bbwsciliwung>BBWS Ciliwung Cisadane. ''Pengendalian Banjir dan Perbaikan Sungai Ciliwung Cisadane'' (PBPS CC). [https://konservasidasciliwung.wordpress.com/kebijakan-tentang-ciliwung/bbws-ciliwung-cisadane/ Archived in ''Konservasi DAS Ciliwung''] - April 2012.</ref>

==Geography== The river flows in the northwest area of Java with predominantly tropical rainforest climate (designated as ''Af'' in the Köppen–Geiger climate classification).<ref name = "koppen">{{Cite journal | title = Updated world map of the Köppen-Geiger climate classification| url = http://www.hydrol-earth-syst-sci.net/11/1633/2007/hess-11-1633-2007.html| year = 2007| journal = Hydrology and Earth System Sciences| volume = 11 | date =| doi = 10.5194/hess-11-1633-2007| first1 =M C| first2 = B L| first3 = T A| last1 = Peel| last2 = Finlayson| last3 =McMahon| doi-access = free}}</ref> The annual average temperature in the area is 27 °C. The warmest month is March, when the average temperature is around 30 °C, and the coldest is May, at 26 °C.<ref name = "nasa">{{Cite web|url= http://neo.sci.gsfc.nasa.gov/dataset_index.php|title= NASA Earth Observations Data Set Index|date= 30 January 2016|publisher= NASA|access-date= 2 October 2017|archive-date= 28 November 2017|archive-url= https://web.archive.org/web/20171128214629/https://neo.sci.gsfc.nasa.gov/dataset_index.php|url-status= dead}}</ref> The average annual rainfall is 3674 mm. The wettest month is December, with an average of 456 mm rainfall, and the driest is September, with 87 mm rainfall.<ref name = "nasarain">{{Cite web|url = http://neo.sci.gsfc.nasa.gov/view.php?datasetId=TRMM_3B43M&year=2014|title = NASA Earth Observations: Rainfall (1 month - TRMM)|date = 30 January 2016|publisher = NASA/Tropical Rainfall Monitoring Mission|access-date = 2 October 2017|archive-date = 19 April 2019|archive-url = https://web.archive.org/web/20190419091014/https://neo.sci.gsfc.nasa.gov/view.php?datasetId=TRMM_3B43M&year=2014|url-status = dead}}</ref>

== See also ==

* List of drainage basins of Indonesia

==References== {{Reflist|30em}}

Category:Rivers of Jakarta Category:Krukut basin