Brang Biji River

Brang Biji River
Sungai Brang Biji
Brang Sumbawa, Brang Soembawa, Soengai Soembawa
River
Country  Indonesia
Provinsi West Nusa Tenggara
Region Sumbawa Regency
City Sumbawa Besar
Source
 - location Batu Lanteh
Mouth Flores Sea
 - location Sumbawa Besar
 - elevation 0 m (0 ft)
 - coordinates 8°27′58″S 117°24′14″E / 8.4661°S 117.4039°E / -8.4661; 117.4039Coordinates: 8°27′58″S 117°24′14″E / 8.4661°S 117.4039°E / -8.4661; 117.4039
Timezone ICST (UTC+8)
Brang Biji
Location in Indonesia

Brang Biji River (Indonesian: Sungai Brang Biji; in local dialect "Brang" means "river") is a river in the island of Sumbawa, Indonesia, about 1,200 km east of the capital Jakarta.[1] It is also known as Brang Sumbawa.[2]

Hydrology

The drainage basin of Brang Biji covers an area of 225 km². The main river has a length of 33.20 km, with an upstream inclination of 17,14%, and the middle part inclination of 5,15%. It flows from south to north, passing Batu Lanteh at upriver and the city of Sumbawa Besar at downriver, into Flores Sea.[3]

For years, Brang Biji river suffers from rapid sedimentation, which reduces its water capacity, and decreasing width due to uncontrolled house building along the river banks.[4] These factors contribute to annual flood, submerging houses along the banks in the districts of Bugis, Brang Bara, Pekat, Samapuin, Lempeh and Brang Biji,[3] as happened in February 2017.[5]

Brang Biji river is also heavily polluted by high concentration of E-coli and mercury, reaching an unsafe level for people to use for drinking or washing.[6] The pollution is attributed to the unhygienic lifestyle of community, such as throwing thrash and using the river as restroom.[7]

Geography

The river flows along the northwestern area of Sumbawa with predominantly tropical savanna climate (designated as As in the Köppen-Geiger climate classification).[8]. The annual average temperature in the area is 26°C. The warmest month is October, when the average temperature is around 30°C, and the coldest is February, at 24°C.[9] The average annual rainfall is 1539 mm. The wettest month is January, with an average of 321 mm rainfall, and the driest is August, with 3 mm rainfall.[10]

See also

Reference

  1. ↑ Brang Biji at Geonames.org (cc-by); Database dump downloaded 2015-11-27
  2. ↑ Brang Sumbawa at Geonames.org (cc-by); Database dump downloaded 2015-11-27
  3. 1 2 (in Indonesian) Fredy Benedictus Da Costa Rao, Saifoe El Unas, Pudyono. Studi Kelayakan Investasi Pembangunan Bendungan Krekeh Kabupaten Sumbawa Berdasarkan Aspek Ekonomi - Jurnal Mahasiswa Teknik Sipil Fakultas Teknik Universitas Brawijaya - Vol 1, No 3 (2015).
  4. ↑ (in Indonesian) Benahi Infrastruktur, "Jinakkan" Banjir - SUARANTB.com - 20 Februari 2017.
  5. ↑ (in Indonesian) 10 Bencana Alam Landa Indonesia dalam Sepekan - Republika - 12 Februari 2017.
  6. ↑ (in Indonesian) Enam Sungai di NTB Tercemar Limbah Berat - Aktual.com - Desember 14, 2015.
  7. ↑ (in Indonesian) Perilaku Hidup Bersih Masih Rendah, Sungai-sungai Besar di NTB Tercemar Tinja - Global FM - 16 Desember 2015.
  8. ↑ 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. doi:10.5194/hess-11-1633-2007.
  9. ↑ "NASA Earth Observations Data Set Index". NASA. 30 January 2016.
  10. ↑ "NASA Earth Observations: Rainfall (1 month - TRMM)". NASA/Tropical Rainfall Monitoring Mission. 30 January 2016.
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