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Arwadito
Arwadito is a torrent of the Nile basin. Rising on the Ts’ats’en plateau of Dogu’a Tembien in northern Ethiopia, it flows northward to empty finally in Giba and Tekezé River. Characteristics It is a confined bedrock river, with an average slope gradient of 149 metres per kilometre. The river has cut a gorge in the surrounding basalt. Flash floods and flood buffering Runoff mostly happens in the form of high runoff discharge events that occur in a very short period (called flash floods). These are related to the steep topography, often little vegetation cover and intense convective rainfall. The peaks of such flash floods have often a 50 to 100 times larger discharge than the preceding baseflow. The magnitude of floods in this river has however been decreased due to interventions in the catchment. Physical conservation structures such as stone bunds and check dams also intercept runoff. Observing that, in rivers with coarse bedload, gabion check dams were destroyed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tanqwa
Tanqwa is a river of northern Ethiopia. Rising in the mountains of Dogu’a Tembien (2510 metres above sea level), it flows westward to Giba River which empties finally in the Tekezé River. Hydrography It is a confined river, locally meandering in its narrow alluvial plain, with a slope gradient of 25 metres per kilometre. With its tributaries, the river has cut a deep gorge. Tributaries Tributaries, upstream from Abiy Addi, include * Tsech'i River * May Qoqah * Arwadito * Adawro River Hydrology Hydrological characteristics The runoff footprint or annual total runoff volume is 41 million m³ at the bridge in Abiy Addi and 79 million m³ at the confluence with Giba River at Barashuwa. Peak discharges up to 543 m³ per second occur in the second part of the rainy season (month of August) when there are strong rains and the soils are saturated with water in many places. The percentage of total rainfall that directly leaves the catchment as storm runoff (also called ru ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agerbi'a
Lim’at is a '' tabia'' in the Dogu'a Tembien district of the Tigray Region of Ethiopia. The ''tabia'' centre is in Maygwa village, located approximately 8 km to the southwest of the ''woreda'' town Hagere Selam. Geography The ''tabia'' stretches down from the Tsatsen plateau (2810 m a.s.l.), across the main road towards Zeleqwa (Upper Tanqwa) river (2270 m a.s.l.). Geology From the higher to the lower locations, the following geological formations are present: * Upper basalt * Interbedded lacustrine deposits * Lower basalt * Amba Aradam Formation * Antalo Limestone * Quaternary alluvium and freshwater tufa Geomorphology and soils The main geomorphic unit is the Hagere Selam Highlands. Corresponding soil types are: * Associated soil types ** shallow soils with high stone contents (Skeletic Cambisol, Leptic Cambisol, Skeletic Regosol) ** moderately deep dark stony clays with good natural fertility (Vertic Cambisol) ** deep, dark cracking clays, tempora ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Giba River
Giba is a river of northern Ethiopia. It starts at the confluence of Genfel and Sulluh (which rises in the mountains of Mugulat) (3298 metres above sea level) and flows westward to the Tekezé River. Future Lake Giba will occupy the plain where Sulluh, Genfel and Agula'i Rivers meet, and hence be the future source of Giba River. Hydrography It is a confined river, locally meandering in its narrow alluvial plain, with a slope gradient of 7 metres per kilometre. With its tributaries, the river has cut a deep gorge. Tributaries Main tributaries, from downstream to upstream, are * Tanqwa ** Tsech'i River ** May Qoqah ** Arwadito ** Adawro River * May Selelo * Zikuli River * Gra Adiam River, also called Bitchoqo River * Zeyi River * Inda Sillasie River ** May Zegzeg *** May Harena *** May Sho'ate ** May Be'ati River * Addi Keshofo River * May Gabat * Inda Anbesa * Ruba Bich'i River * Hurura ** Afedena River *** May Ayni ** Shimbula * Ilala River * Qarano River * Agula'i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rivers Of Ethiopia
This is a list of streams and rivers in Ethiopia, arranged geographically by drainage basin. There is an alphabetic list at the end of this article. Flowing into the Mediterranean *''Nile (Egypt, Sudan)'' Atbarah River *Mareb River (or Gash River) (only reaches the Atbarah in times of flood) **Obel River *Tekezé River (or Takkaze or Setit) ** Zarima River **Ataba River **Wari River *** Qortem Zer'a *** Tsaliet **** Agefet ***** Ab'aro ***** Azef River ***** Amblo **** Korowya **** Ferrey River **** Kidane Mihret River **** May Meqa **** Graliwdo ** Giba River *** Tanqwa **** Tsech'i River **** May Qoqah **** Arwadito **** Adawro River *** May Selelo *** Zikuli River *** Gra Adiam River, also called Bitchoqo River *** Zeyi River *** Inda Sillasie River **** May Zegzeg ***** May Harena ***** May Sho'ate **** May Be'ati River *** Addi Keshofo River *** May Gabat *** Inda Anbesa *** Ruba Bich'i River *** Hurura **** Afedena River ***** May Ayni **** Shimbula *** Ila ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Ethiopian Rivers
This is a list of streams and rivers in Ethiopia, arranged geographically by drainage basin. There is an alphabetic list at the end of this article. Flowing into the Mediterranean *''Nile (Egypt, Sudan)'' Atbarah River *Mareb River (or Gash River) (only reaches the Atbarah in times of flood) **Obel River *Tekezé River (or Takkaze or Setit) ** Zarima River **Ataba River **Wari River *** Qortem Zer'a *** Tsaliet **** Agefet ***** Ab'aro ***** Azef River ***** Amblo **** Korowya **** Ferrey River **** Kidane Mihret River **** May Meqa **** Graliwdo ** Giba River *** Tanqwa **** Tsech'i River **** May Qoqah **** Arwadito **** Adawro River *** May Selelo *** Zikuli River *** Gra Adiam River, also called Bitchoqo River *** Zeyi River *** Inda Sillasie River **** May Zegzeg ***** May Harena ***** May Sho'ate **** May Be'ati River *** Addi Keshofo River *** May Gabat *** Inda Anbesa *** Ruba Bich'i River *** Hurura **** Afedena River ***** May Ayni **** Shimbula *** Ila ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Degua Tembien
Dogu'a Tembien (, "Upper Tembien", sometimes transliterated as Degua Tembien) is a woreda in Tigray Region, Ethiopia. It is named in part after the former province of Tembien. Nowadays, the mountainous district is part of the Southeastern Tigray Zone. The administrative centre of this woreda is Hagere Selam. History Dogu’a Tembien holds numerous prehistoric sites, which have been dated to the Middle Stone Age in Ayninbirkekin, or Pastoral Neolithic in Aregen and Menachek. Geography Topography and landscapes Major mountains :* Tsatsen, 2815 metres, a wide mesa between Hagere Selam and Inda Maryam Qorar () :* Ekli Imba, 2799 metres, summit of the Arebay massif in Arebay ''tabia'' or district () :* Imba Zuw’ala, 2710 metres, near Hagere Selam () :* Aregen, 2660 metres, in Aregen ''tabia'' () :* Dabba Selama, 2630 metres, in Haddinnet ''tabia'' () (not to be confused with the homonymous monastery) :* Imba Dogu’a, 2610 metres, in Mizane Birhan ''tabia'' () :* Imb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dogu'a Tembien
Dogu'a Tembien (, "Upper Tembien", sometimes transliterated as Degua Tembien) is a woreda in Tigray Region, Ethiopia. It is named in part after the former province of Tembien. Nowadays, the mountainous district is part of the Southeastern Tigray Zone. The administrative centre of this woreda is Hagere Selam. History Dogu’a Tembien holds numerous prehistoric sites, which have been dated to the Middle Stone Age in Ayninbirkekin, or Pastoral Neolithic in Aregen and Menachek. Geography Topography and landscapes Major mountains :* Tsatsen, 2815 metres, a wide mesa between Hagere Selam and Inda Maryam Qorar () :* Ekli Imba, 2799 metres, summit of the Arebay massif in Arebay ''tabia'' or district () :* Imba Zuw’ala, 2710 metres, near Hagere Selam () :* Aregen, 2660 metres, in Aregen ''tabia'' () :* Dabba Selama, 2630 metres, in Haddinnet ''tabia'' () (not to be confused with the homonymous monastery) :* Imba Dogu’a, 2610 metres, in Mizane Birhan ''tabia'' () :* Imba Ra’i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lim'at
Lim’at is a '' tabia'' in the Dogu'a Tembien district of the Tigray Region of Ethiopia. The ''tabia'' centre is in Maygwa village, located approximately 8 km to the southwest of the ''woreda'' town Hagere Selam. Geography The ''tabia'' stretches down from the Tsatsen plateau (2810 m a.s.l.), across the main road towards Zeleqwa (Upper Tanqwa) river (2270 m a.s.l.). Geology From the higher to the lower locations, the following geological formations are present: * Upper basalt * Interbedded lacustrine deposits * Lower basalt * Amba Aradam Formation * Antalo Limestone * Quaternary alluvium and freshwater tufa Geomorphology and soils The main geomorphic unit is the Hagere Selam Highlands. Corresponding soil types are: * Associated soil types ** shallow soils with high stone contents (Skeletic Cambisol, Leptic Cambisol, Skeletic Regosol) ** moderately deep dark stony clays with good natural fertility (Vertic Cambisol) ** deep, dark cracking clays, tempora ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Abiy Addi
Abiy Addi (also spelled Abi Addi; Tigrigna ዓብዪ ዓዲ "Big town") is a town in central Tigray Region, Tigray, Ethiopia. Abiy Addi is at the southeastern edge of the Kola Tembien woreda, of which it is the capital. Overview The town is divided into two parts by the Tanqwa, Tanqwa River, the lower part being the more respectable part while the upper part "is where you'll find the marketplace ... and the seedier bars in which you're most likely to see Awri dancing as the ''tej'' hits the mark." Briggs notes that Abiy Addi is known in Tigray for the frenetic style of dancing called "Awri", as well as the quality of its honey. Having visited Abiy Abbi in the mid-1940s, David Roden Buxton, David Buxton thought that "perhaps the best thing about Abbi Addi was the panorama of the Semien Mountains, Simien mountains standing to the west beyond the deep valley of the Tekezé." Buxton notes that the entire height of that mountain range was visible, from the southern foothills to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strahler Number
In mathematics, the Strahler number or Horton–Strahler number of a mathematical tree is a numerical measure of its branching complexity. These numbers were first developed in hydrology by and ; in this application, they are referred to as the Strahler stream order and are used to define stream size based on a hierarchy of tributaries. They also arise in the analysis of L-systems and of hierarchical biological structures such as (biological) trees and animal respiratory and circulatory systems, in register allocation for compilation of high-level programming languages and in the analysis of social networks. Alternative stream ordering systems have been developed by Shreve and Hodgkinson et al.Hodgkinson, J.H., McLoughlin, S. & Cox, M.E. 2006. The influence of structural grain on drainage in a metamorphic sub-catchment: Laceys Creek, southeast Queensland, Australia. Geomorphology, 81: 394–407. A statistical comparison of Strahler and Shreve systems, together with an analysis of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethiopia
Ethiopia, , om, Itiyoophiyaa, so, Itoobiya, ti, ኢትዮጵያ, Ítiyop'iya, aa, Itiyoppiya officially the Federal Democratic Republic of Ethiopia, is a landlocked country in the Horn of Africa. It shares borders with Eritrea to the north, Djibouti to the northeast, Somalia to the east and northeast, Kenya to the south, South Sudan to the west, and Sudan to the northwest. Ethiopia has a total area of . As of 2022, it is home to around 113.5 million inhabitants, making it the 13th-most populous country in the world and the 2nd-most populous in Africa after Nigeria. The national capital and largest city, Addis Ababa, lies several kilometres west of the East African Rift that splits the country into the African and Somali tectonic plates. Anatomically modern humans emerged from modern-day Ethiopia and set out to the Near East and elsewhere in the Middle Paleolithic period. Southwestern Ethiopia has been proposed as a possible homeland of the Afroasiatic langua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tigray Region
The Tigray Region, officially the Tigray National Regional State, is the northernmost regional state in Ethiopia. The Tigray Region is the homeland of the Tigrayan, Irob, and Kunama people. Its capital and largest city is Mekelle. Tigray is the fifth-largest by area, the fifth-most populous, and the fifth-most densely populated of the 11 regional states. Tigray's official language is Tigrinya, similar to that spoken in Eritrea just to the North. The estimated population as of 2019 is 5,443,000. The majority of the population (c. 80%) are farmers, contributing 46% to the regional gross domestic product (2009). The highlands have the highest population density, especially in eastern and central Tigray. The much less densely populated lowlands comprise 48% of Tigray's area. Like many parts of Africa, Tigray is far from a religious monolith. Despite the historical identification of Ethiopia with Orthodox Christianity, the presence of Islam in Ethiopia is as old as the religion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
