American Geophysical Union, Washington D.C., p 233, Book Rokel River (Seli River) The Gallinas and Sulima Rivers: The strong surf around the estuaries of the Mission Work in Sierra Leone, West Africa. season, The reported maximum and minimum discharge at Magbass, one of the three stations, are 1,905 cubic metres (67,300cuft) and 2 cubic metres (71cuft) respectively. around the Rokel/Sierra Leone estuary - based on Strasser-King (1979). The Underneath of Things: Violence, History, and the Everyday in Bioscience 58:403414. In Sierra Leone, mangrove swamp areas are inundated by saline tidal water twice daily from the ocean through the Great and Little Scarcies rivers up to 32 miles inland. The hydropower potential of Sierra Leone is estimated at 1513MW, scattered in 27 sites . Part of Springer Nature. Gallinas and Sulima Rivers and the currents of these two rivers have formed a sand This is a list of rivers in Sierra Leone. 40 kilometers (25 miles) long and about 16 kilometers (10 miles) wide. muddy and sandy areas of the continental shelf have similar salinity ranges. middle of the country. This alluvial gold mining operation has been described as environmentally destructive as forest denudation for the purpose of mining caused extensive erosion of the hills and consequent sedimentation of the river and its tributaries. IFAN 28(Ser A (3)):10411063, MRAG, 18 Queen Street, London, W1J 5PN, UK, You can also search for this author in [3] The river basin measures 10,622 square kilometres (4,101sqmi) in size, with the drainage divided by the Gbengbe and Kabala hills and the Sula Mountains. Monographiae Biologicae, vol 64. The West African country of Sierra Leone occupies an area of 71,740 sq. The iron extracted has resulted in reduction of the height of one of the ore bearing hills by 24.4 metres (80ft). (Strasser-King, 1979). The blank outline map respresents mainland Sierra Leone. northern border with Guinea. Rokel in the central region. climate; temperatures stay fairly constant throughout the year. [1], The Rokel river flow has been measured at three gauge stations. is by far the largest. https://doi.org/10.1016/j.ympev.2013.03.015, Article PHYSICAL CHARACTERISTICS OF RIVERS - The Principles and Practice of There is an eastward current, the Equatorial Counter Current (ECC) embedded between During the The sedimentary sequence of the coastline is a response to interaction of fluvial Ferme, Mariane. In: Proceedings International Symposium on Tilapia in Aquaculture. Sierra Leone has four distinct physical regions. The Rokel River originates in the Loma span the northeastern part of the country. An Interesting Narrative of a Mission Sent to Sierra Leone in Africa by the Methodists in 1811; to which is prefixed an account of the rise, progress, disasters and present state of that colony, the whole interspersed with a variety of remarkable particulars. Scanned by Google. By Robert Thorpe, 1815. feet). According to Western Agricultural Economics Association, (WAEA), (2008), Sierra Leone's groundwater resources have not been extensively studied. Archiv Fur Hydrobiologie 71:381420, Leveque C (1997) Biodiversity dynamics and conservation: the freshwater fish of tropical Africa. Sierra Leone River | river, Sierra Leone | Britannica Scanned by Google. The southern African region can be split into the well-watered tropical North, drained by major rivers such as the Zambezi and Okavango, and the water-limited South, of which the western side is truly arid, and the eastern and southern regions are more adequately provided for. It is indented with many estuaries and creeks. Formed by Port Loko Creek and the Rokel River, it is from 4 to 10 miles (6 to 16 km) wide and 25 miles (40 km) long and contains Sierra Leone's two major portsFreetown harbour and the port at Pepel. Intertidal flats containing sediments of grain size varying from clay to Includes several references to Sierra Leone, including the death of Prince Naimbonna (sic. The Sierra Leone River is a river estuary on the Atlantic Ocean in Western Sierra Leone. This is succeeded by a belt of forest and forested savanna, which rises in the north and east to the mountainous plateaus of the Fouta Djallon. By J.A. J Fish Biol 27(Supplement A):263277, Payne AI, Wakeford RC (2006) Bumbuna hydroelectric project, baseline fish survey final report. It holds the major ports of Queen Elizabeth II Quay and Pepel. They correspond almost totally to the baseflow of the rivers, and the permeability of the substratum is high. [3][4] The estuary, after it joins the Bankasoka River, is also called the Sierra Leone River, is 25mi (40km) in length and has a width of 410 miles (6.416.1km). Sierra Leonean Heroes: Fifty Men and Women Who Helped to Build Our Nation, Commissioned by the Sierra Leone government, 1988. Banana Islands, the Turtle Islands, and Sherbro Island. Figure 1 The West African coastline between Liberia and Guinea with The climate is characterized by two distinct seasons: the dry season It is also reported that its orogeny belongs to the Pan African thermo-tectonic age of about 550 Ma. 2023 Springer Nature Switzerland AG. By Thomas Eyre Poole, 1850. Scanned by Google. sector between Senegal and Liberia and this has biological consequences on fisheries of Mills, D.D., Bishop of the United Brethren in Christ, 1898. Fighting for the Rain Forest: War, Youth, and Resources in Sierra Correspondence to Scanned by Google. [7] Geologically it is a tectonically controlled basin with formations of Precambrian, Infra-Cambrian and Pleistocene age. By Granville Sharp, 1788. The Rokel drops 15 metres (49ft) at the Bumbuna waterfalls. Longhurst (1983) gives values of solar radiation at Freetown as with occasional thin beds of argillaceous limestone and calcareous grit and, also, seems a depth of 200 m is about 27 500 km2. Scanned by Google. The eight species of palaearctic migrant waders recorded are:[1], Coordinates: .mw-parser-output .geo-default,.mw-parser-output .geo-dms,.mw-parser-output .geo-dec{display:inline}.mw-parser-output .geo-nondefault,.mw-parser-output .geo-multi-punct{display:none}.mw-parser-output .longitude,.mw-parser-output .latitude{white-space:nowrap}833N 1248W / 8.55N 12.80W / 8.55; -12.80. Afr. (= 80F) with the range of 5.6C (42C). An Essay on Colonization, particularly applied to the Western Coast of Africa, with some free thoughts on cultivation and commerce; also brief descriptions of the colonies already formed, or attempted, in Africa, including those of Sierra Leona and Bulama.
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