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| ==River course== | ==River course== | ||
| Rokel rises in the {{convert|900|m}} high interior plateau of the ], in the Guinea Highlands of north central Leone, flows southwest about {{convert|240|mi}} through hill ranges and, together with a smaller, parallel stream called ], feeds into the Rokel ] before entering the ].<ref name="Bird2010">{{cite book|last=Bird|first=Eric|title=Encyclopedia of the World's Coastal Landforms|url=http://books.google.com/books?id=Mfo5TPb7SDsC&pg=PA933|date=8 April 2010|publisher=Springer|isbn=978-1-4020-8638-0|pages=933–}}</ref><ref name=River>{{Cite web|url=http://www.britannica.com/EBchecked/topic/506982/Rokel-River|title=Rokel River|accessdate=3 July 2013|publisher=Encyclopedia Brittanica}}</ref> |
Rokel rises in the {{convert|900|m}} high interior plateau of the ], in the Guinea Highlands of north central Leone, flows southwest about {{convert|240|mi}} through hill ranges and, together with a smaller, parallel stream called ], feeds into the Rokel ] before entering the ].<ref name="Bird2010">{{cite book|last=Bird|first=Eric|title=Encyclopedia of the World's Coastal Landforms|url=http://books.google.com/books?id=Mfo5TPb7SDsC&pg=PA933|date=8 April 2010|publisher=Springer|isbn=978-1-4020-8638-0|pages=933–}}</ref><ref name=River>{{Cite web|url=http://www.britannica.com/EBchecked/topic/506982/Rokel-River|title=Rokel River|accessdate=3 July 2013|publisher=Encyclopedia Brittanica}}</ref> The estuary is also called the ]. The estuary is 25 miles in length and has a width varying from 4-10 miles. Freetown and Papel are the two ports located on the shores of the estuary.<ref name=Brit>{{Cite web|url=http://www.britannica.com/EBchecked/topic/543405/Sierra-Leone-River|title=Sierra Leone River| accessdate=3 July 2013|publisher=Encyclopedia Brittanica}}</ref> As the estuary widens and joins the Atlantic its width is about 11km. The southern shore is the deepest and forms natural harbour, which is reported to be the third largest in the world.<ref name=Ramsar>{{Cite web|url=http://sites.wetlands.org/reports/ris/1SL001en_part1.pdf|format=pdf|title= Sierra Leone Estuary :Proposed Ramsar Site|accessdate=3 July 2013|publisher=Wetland Organization}}</ref> | ||
| Mangrove swamps are noted around the river's ].<ref name="Bird2010"/> The river basin measures {{convert|10622|km2}} in size, with the drainage divided by the Gbengbe and Kabala hills and the Sula Mountains. The Rokel drops {{convert|15|m}} at the Bumbuna waterfalls.<ref name="BrebbiaPopov2013">{{cite book|last1=Brebbia|first1=C. A.|last2=Popov|first2=V.|title=Food and Environment II: The Quest for a Sustainable Future|url=http://books.google.com/books?id=LsGsLmjUU2EC&pg=PA45|date=1 April 2013|publisher=WIT Press|isbn=978-1-84564-703-2|pages=45–}}</ref> Sierra Leone's capital city of ] lies at the entrance to the Sierra Leone River, about {{convert|25|mi}} downstream from the mouth of the Rokel and Port at Pepel. | Mangrove swamps are the dominant ecosystem<ref name=Ramsar/> noted around the river's ].<ref name="Bird2010"/> The river basin measures {{convert|10622|km2}} in size, with the drainage divided by the Gbengbe and Kabala hills and the Sula Mountains. The Rokel drops {{convert|15|m}} at the Bumbuna waterfalls.<ref name="BrebbiaPopov2013">{{cite book|last1=Brebbia|first1=C. A.|last2=Popov|first2=V.|title=Food and Environment II: The Quest for a Sustainable Future|url=http://books.google.com/books?id=LsGsLmjUU2EC&pg=PA45|date=1 April 2013|publisher=WIT Press|isbn=978-1-84564-703-2|pages=45–}}</ref> Mangrove species recorded are ], ], ], and ], which cover an area of 34.23ha.<ref name=Ramsar/> Sierra Leone's capital city of ] lies at the entrance to the Sierra Leone River, about {{convert|25|mi}} downstream from the mouth of the Rokel and Port at Pepel. | ||
| ==History== | ==History== | ||
| The estuary which extends over an area of 2950 sqkm is proposed to be listed as a Ramsar site of wetland importance. The site is bounded by Cape Point on the Western Side of the Freetown, by the ] on one of its banks, and the ] where areas of the Rokel joins at the southern end of its mouth.<ref name=Ramsar/> | |||
| Iron ore and alluvial gold mining began in the late 1920s and early 1930s, while the Bumbuna Falls hydroelectric project is underway.<ref name=BrebbiaPopov2013 /> | Iron ore and alluvial gold mining began in the late 1920s and early 1930s, while the Bumbuna Falls hydroelectric project is underway.<ref name=BrebbiaPopov2013 /> | ||
| The ] established their capital, ], near the source of the Rokel.<ref name="Shillington2004">{{cite book|last=Shillington|first=Kevin|title=Encyclopedia of African History|url=http://books.google.com/books?id=Ftz_gtO-pngC&pg=PA922|year=2004|publisher=CRC Press|isbn=978-1-57958-245-6|pages=922–}}</ref> | The ] established their capital, ], near the source of the Rokel.<ref name="Shillington2004">{{cite book|last=Shillington|first=Kevin|title=Encyclopedia of African History|url=http://books.google.com/books?id=Ftz_gtO-pngC&pg=PA922|year=2004|publisher=CRC Press|isbn=978-1-57958-245-6|pages=922–}}</ref> | ||
Revision as of 14:51, 3 July 2013
The Rokel River (also Seli River; previously Pamoronkoh River) is the largest river in the Republic of Sierra Leone in West Africa.
River course
Rokel rises in the 900 metres (3,000 ft) high interior plateau of the Loma Mountains, in the Guinea Highlands of north central Leone, flows southwest about 240 miles (390 km) through hill ranges and, together with a smaller, parallel stream called Port Loko Creek, feeds into the Rokel estuary before entering the Atlantic Ocean. The estuary is also called the Sierra Leone River. The estuary is 25 miles in length and has a width varying from 4-10 miles. Freetown and Papel are the two ports located on the shores of the estuary. As the estuary widens and joins the Atlantic its width is about 11km. The southern shore is the deepest and forms natural harbour, which is reported to be the third largest in the world.
Mangrove swamps are the dominant ecosystem noted around the river's ria. The river basin measures 10,622 square kilometres (4,101 sq mi) in size, with the drainage divided by the Gbengbe and Kabala hills and the Sula Mountains. The Rokel drops 15 metres (49 ft) at the Bumbuna waterfalls. Mangrove species recorded are Rhizophora, Avicennia, Laguncularia, and Conocarpus, which cover an area of 34.23ha. Sierra Leone's capital city of Freetown lies at the entrance to the Sierra Leone River, about 25 miles (40 km) downstream from the mouth of the Rokel and Port at Pepel.
History
The estuary which extends over an area of 2950 sqkm is proposed to be listed as a Ramsar site of wetland importance. The site is bounded by Cape Point on the Western Side of the Freetown, by the Bunce River on one of its banks, and the Targrin Point where areas of the Rokel joins at the southern end of its mouth.
Iron ore and alluvial gold mining began in the late 1920s and early 1930s, while the Bumbuna Falls hydroelectric project is underway. The Yalunka people established their capital, Falaba, near the source of the Rokel. Sierra Leone's equivalent of the British knighthood is called "Order of the Rokel."
References
- ^ Bird, Eric (8 April 2010). Encyclopedia of the World's Coastal Landforms. Springer. pp. 933–. ISBN 978-1-4020-8638-0.
- "Rokel River". Encyclopedia Brittanica. Retrieved 3 July 2013.
- "Sierra Leone River". Encyclopedia Brittanica. Retrieved 3 July 2013.
- ^ "Sierra Leone Estuary :Proposed Ramsar Site" (pdf). Wetland Organization. Retrieved 3 July 2013.
- ^ Brebbia, C. A.; Popov, V. (1 April 2013). Food and Environment II: The Quest for a Sustainable Future. WIT Press. pp. 45–. ISBN 978-1-84564-703-2.
- Shillington, Kevin (2004). Encyclopedia of African History. CRC Press. pp. 922–. ISBN 978-1-57958-245-6.
8°33′N 12°48′W / 8.55°N 12.80°W / 8.55; -12.80
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