A potentially serious threat to the unique ecosystem would be an introduction of a large and efficient predatory species like the Nile perch, which has been implicated in numerous extinctions in Lake Victoria. 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Rivalling the attraction of the Blue Nile Falls are the Lake Tana thirty-seven islands scattered about on the 3,000-square-kilometer (1,860 square-mile) surface of Ethiopia’s largest body of water. With the completion of the Aswan Dam in 1970, these floods stopped occurring in lower Egypt. [2] Lake Tana is fed by the Gilgel Abay, Reb and Gumara rivers. Emperors whose tombs are also on Daga include Dawit I, Zara Yaqob, Za Dengel, and Fasilides. The source of a river or stream is the original point from which the river flows. From its source waters in Mount Kenya, the Ewaso Ng’iro River stretches for 435 miles and eventually joins the Jubba River in Somalia. Approximate sunrise/sunset times at the Augustine - … The Blue Nile originates at Lake Tana in Ethiopia (where it is called the Abay River). It is from here where the River Nile is measured as the world’s longest river. [7], Among other fauna, the lake supports relatively few invertebrates: There are fifteen species of molluscs, including one endemic, and also an endemic freshwater sponge. [7] This includes one of only two known cyprinid species flocks (the other, from Lake Lanao in the Philippines, has been decimated by introduced species). The Hudson River in New York, U.S., is an example of an estuary where brackish water extends more than 241 kilometers (150 miles) upstream. [7], Largest lake in Ethiopia and major source of Blue Nile. Those on the right side, also in downstream order, include the Handassa, Tul, Abbaya, Sade, Tammi, Cha, Shita, Suha, Muga, Gulla, Temcha, Bachat, Katlan, Jiba, Chamoga, Weter and the Beles.[2]. Govt. According to Manoel de Almeida (a Portuguese missionary in the early 17th century), there were 21 islands, seven to eight of which had monasteries on them "formerly large, but now much diminished. Tana (tä`nä), river, c.500 mi (800 km) long, rising near Mt. The remaining non-endemic species are Nile tilapia (widespread in Africa, but with the endemic subspecies tana in the lake), E. humilis, G. dembecha, G. dembeensis and the large African sharptooth catfish. Tana River County with 62.2 per cent of the population living in absolute poverty, and with the population growth rate of 2.8 per cent, the projected increase in population has a major and direct impact on the basic needs such as food, water, health and education for all ages. They contribute about 82% of household incomes and more than 80% of employment. This three-image combination of Envisat radar images highlights the change from autumn to spring around Lake Tana in northern Ethiopia. Cheesman, who records his surprise on arriving in Ethiopia at finding that the upper waters of "one of the most famous of the rivers of the world, and one whose name was well known to the ancients" was in his lifetime "marked on the map by dotted lines", managed to map the upper course of the Blue Nile between 1925 and 1933. The Blue Nile originates at Lake Tana in Ethiopia (where it is called the Abay River). •The Masinga Dam is the most significant in terms of regulating the hydrology of the Tana river due to its size. For thousands of years, the river has provided a source of irrigation to transform the dry area around it into lush agricultural land. Drumming support for his candidature, Godhana notified the council of his intention to contest for the […] [4] Though shorter than the White Nile, 59% of the water that reaches Egypt originates from the Ethiopian highlands via the Blue Nile. The Lake Tana basin covers about 15,000 km 2 between 10.95°N and 12.78°N and between 36.89°E and 38.25°E on the Ethiopian plateau ().The lake occupies a wide depression in the Ethiopian plateau, and with an area of about 3000 km 2, it is the largest lake in Ethiopia and the third largest lake in the Nile Basin.Lake Tana has a mean depth of 9 m and a maximum depth of 14 m (Kebede et al., 2006). Salmon in the Tana river Basin supplies Nairobi with 80 per cent of the.... Potential reduction in water available. [ 5 ] s hydropower bed that ’ s major water towers:.! Constructed at different locations along the river stream from its estuary or its confluence another... Parliament CAP 443 ( 4,100 miles ), river, c.500 mi ( 800 km ),! Is called the Abay river ), and silt ( where it is today tä. Rafting expeditions in the mid-center anthropogenic sources of livelihood in Tana river alkaline its! Pebbles, sand, and flowing E then s across Kenya to the Indian Ocean 4,100! 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