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Ethiopia is located in the
Horn of Africa The Horn of Africa (HoA), also known as the Somali Peninsula, is a large peninsula and geopolitical region in East Africa.Robert Stock, ''Africa South of the Sahara, Second Edition: A Geographical Interpretation'', (The Guilford Press; 2004), ...
. It is bordered by
Eritrea Eritrea ( ; ti, ኤርትራ, Ertra, ; ar, إرتريا, ʾIritriyā), officially the State of Eritrea, is a country in the Horn of Africa region of Eastern Africa, with its capital and largest city at Asmara. It is bordered by Ethiopia ...
to the north,
Djibouti Djibouti, ar, جيبوتي ', french: link=no, Djibouti, so, Jabuuti officially the Republic of Djibouti, is a country in the Horn of Africa, bordered by Somalia to the south, Ethiopia to the southwest, Eritrea in the north, and the Red ...
and
Somalia Somalia, , Osmanya script: 𐒈𐒝𐒑𐒛𐒐𐒘𐒕𐒖; ar, الصومال, aṣ-Ṣūmāl officially the Federal Republic of SomaliaThe ''Federal Republic of Somalia'' is the country's name per Article 1 of thProvisional Constituti ...
to the east,
Sudan Sudan ( or ; ar, السودان, as-Sūdān, officially the Republic of the Sudan ( ar, جمهورية السودان, link=no, Jumhūriyyat as-Sūdān), is a country in Northeast Africa. It shares borders with the Central African Republic t ...
and
South Sudan South Sudan (; din, Paguot Thudän), officially the Republic of South Sudan ( din, Paankɔc Cuëny Thudän), is a landlocked country in East Africa. It is bordered by Ethiopia, Sudan, Central African Republic, Democratic Republic of the C ...
to the west, and
Kenya ) , national_anthem = "Ee Mungu Nguvu Yetu"() , image_map = , map_caption = , image_map2 = , capital = Nairobi , coordinates = , largest_city = Nairobi , ...
to the south.
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 ...
has a high central plateau that varies from above sea level, with the
highest mountain Currently, There are at least 108 mountains on Earth with elevations of or greater above sea level. The vast majority of these mountains are located on the edge of the Indian plate, Indian and Eurasian plate, Eurasian plates in China, India, ...
reaching . Elevation is generally highest just before the point of descent to the
Great Rift Valley The Great Rift Valley is a series of contiguous geographic trenches, approximately in total length, that runs from Lebanon in Asia to Mozambique in Southeast Africa. While the name continues in some usages, it is rarely used in geology as it ...
, which splits the plateau diagonally. A number of rivers cross the plateau; notably the
Blue Nile The Blue Nile (; ) is a river originating at Lake Tana in Ethiopia. It travels for approximately through Ethiopia and Sudan. Along with the White Nile, it is one of the two major tributaries of the Nile and supplies about 85.6% of the water ...
rising from
Lake Tana Lake Tana ( am, ጣና ሐይቅ, T’ana ḥāyik’i; previously Tsana) is the largest lake in Ethiopia and the source of the Blue Nile. Located in Amhara Region in the north-western Ethiopian Highlands, the lake is approximately long and wid ...
. The plateau gradually slopes to the lowlands of the Sudan on the west and the Somali-inhabited plains to the east. Ethiopia's westernmost locality is Pibor River opposite the Sudanese village of Denjok. Its easternmost locality lies along the eastern border of Dollo Zone opposite
Puntland Puntland ( so, Puntland, ar, أرض البنط, it, Terra di Punt or ''Paese di Punt''), officially the Puntland State of Somalia ( so, Dowlad Goboleedka Puntland ee Soomaaliya, ar, ولاية أرض البنط الصومالية), is a F ...
and
Galmudug Galmudug ( ar, جلمدج; it, Galmudugh), officially Galmudug State of Somalia ( so, Dowlad Goboleedka Galmudug ee Somalia, Soomaaliya), is a States and regions of Somalia, Federal Member State in central Somalia, with its capital at Dhusamareb. ...
states.


Physical features


Geography

Between the valley of the Upper
Nile The Nile, , Bohairic , lg, Kiira , Nobiin language, Nobiin: Áman Dawū is a major north-flowing river in northeastern Africa. It flows into the Mediterranean Sea. The Nile is the longest river in Africa and has historically been considered ...
and Ethiopia's border with
Sudan Sudan ( or ; ar, السودان, as-Sūdān, officially the Republic of the Sudan ( ar, جمهورية السودان, link=no, Jumhūriyyat as-Sūdān), is a country in Northeast Africa. It shares borders with the Central African Republic t ...
and South Sudan is a region of elevated
plateau In geology and physical geography, a plateau (; ; ), also called a high plain or a tableland, is an area of a highland consisting of flat terrain that is raised sharply above the surrounding area on at least one side. Often one or more sides ha ...
s from which rise the various tablelands and mountains that constitute the
Ethiopian Highlands The Ethiopian Highlands is a rugged mass of mountains in Ethiopia in Northeast Africa. It forms the largest continuous area of its elevation in the continent, with little of its surface falling below , while the summits reach heights of up to . ...
. On nearly every side, the walls of the plateaus rise abruptly from the
plain In geography, a plain is a flat expanse of land that generally does not change much in elevation, and is primarily treeless. Plains occur as lowlands along valleys or at the base of mountains, as coastal plains, and as plateaus or uplands ...
s, constituting outer mountain chains. The highlands are thus a clearly marked geographic division. In
Eritrea Eritrea ( ; ti, ኤርትራ, Ertra, ; ar, إرتريا, ʾIritriyā), officially the State of Eritrea, is a country in the Horn of Africa region of Eastern Africa, with its capital and largest city at Asmara. It is bordered by Ethiopia ...
, the eastern wall of this plateau runs parallel to the
Red Sea The Red Sea ( ar, البحر الأحمر - بحر القلزم, translit=Modern: al-Baḥr al-ʾAḥmar, Medieval: Baḥr al-Qulzum; or ; Coptic: ⲫⲓⲟⲙ ⲛ̀ϩⲁϩ ''Phiom Enhah'' or ⲫⲓⲟⲙ ⲛ̀ϣⲁⲣⲓ ''Phiom ǹšari''; T ...
from
Ras Kasar Ras Kasar is a cape in northeastern Africa, on the border between Eritrea and Sudan at the Red Sea The Red Sea ( ar, البحر الأحمر - بحر القلزم, translit=Modern: al-Baḥr al-ʾAḥmar, Medieval: Baḥr al-Qulzum; or ; ...
( 18° N) to
Annesley Bay The Gulf of Zula, also known as Annesley Bay, Baia di Arafali or Zula Bahir Selat’ē, is a body of water on the Eritrean coastline on the Red Sea. Geography The Gulf lies to the east of Massawa, near the midpoint of the Eritrean coast. It is ...
(also known as the Bay of
Zula Zula ግእዝ ዙላ saba ሰብኣ 𐩸𐩡 is a small town in central Eritrea. It is situated near the head of Annesley Bay (also known as the Gulf of Zula), on the Red Sea coast. Four kilometers away is the archeological site of Adulis, whi ...
) ( 15° N). It then turns due south into Ethiopia and follows closely the line of 40° E for some . About 9° N there is a break in the wall, through which the
Awash River The Awash (sometimes spelled Awaash; Oromo: ''Awaash'', Amharic: አዋሽ, Afar: ''We'ayot'', Somali: ''Webiga Dir'') is a major river of Ethiopia. Its course is entirely contained within the boundaries of Ethiopia and empties into a chain of ...
flows eastward. The main range at this point trends southwest, while south of the Awash Valley, which is some below the level of the mountains, another
massif In geology, a massif ( or ) is a section of a planet's crust that is demarcated by faults or flexures. In the movement of the crust, a massif tends to retain its internal structure while being displaced as a whole. The term also refers to a ...
rises in a direct line south. This second range sends a chain (the Ahmar Mountains) eastward toward the
Gulf of Aden The Gulf of Aden ( ar, خليج عدن, so, Gacanka Cadmeed 𐒅𐒖𐒐𐒕𐒌 𐒋𐒖𐒆𐒗𐒒) is a deepwater gulf of the Indian Ocean between Yemen to the north, the Arabian Sea to the east, Djibouti to the west, and the Guardafui Channe ...
. The two chief eastern ranges maintain a parallel course south by west, with a broad upland valley in between – in which valley are a series of lakes – to about 3° N, the outer (eastern) spurs of the plateau still keeping along the line of 40° E. The southern escarpment of the plateau is highly irregular, but has a general direction northwest and southeast from 6° N to 3° N. It overlooks the depression in which is
Lake Turkana Lake Turkana (), formerly known as Lake Rudolf, is a lake in the Kenyan Rift Valley, in northern Kenya, with its far northern end crossing into Ethiopia. It is the world's largest permanent desert lake and the world's largest alkaline lake. B ...
and – east of that lake – the southern
Debub Omo Zone South Omo Zone (or Debub Omo Zone) is a List of zones of Ethiopia, zone in the Ethiopian Southern Nations, Nationalities and Peoples' Region (SNNPR). Debub Omo is bordered on the south by Kenya, on the southwest by the South Sudan, on the west by ...
(part of the larger
Southern Nations, Nationalities, and Peoples Region The Southern Nations, Nationalities, and Peoples' Region (often abbreviated as SNNPR; am, የደቡብ ብሔር ብሔረሰቦችና ሕዝቦች ክልል, Yädäbub Bḥer Bḥeräsäbočna Hzboč Kllə) is a regional state in southwestern E ...
). The western wall of the plateau from 6° N to 11° N is well marked and precipitous. North of 11° N the hills turn more to the east and fall more gradually to the
East Sudanian savanna The East Sudanian savanna is a hot, dry, tropical savanna ecoregion of Central and East Africa. Geography The East Sudanian savanna is the eastern half of the Sudanian savanna belt which runs east and west across Africa. The eastern lies eas ...
plains at their base. On its northern face, the plateau falls in terraces to the level of the eastern Sudan. The eastern escarpment is the best defined of these outer ranges. It has a mean height of , and in many places rises almost perpendicularly from the plain. Narrow and deep clefts, through which descend mountain torrents that lose themselves in the sandy soil of the Eritrean coast, afford means of reaching the plateau, or the easier route through the
Awash Valley The Awash (sometimes spelled Awaash; Oromo: ''Awaash'', Amharic: አዋሽ, Afar: ''We'ayot'', Somali: ''Webiga Dir'') is a major river of Ethiopia. Its course is entirely contained within the boundaries of Ethiopia and empties into a chain of ...
may be chosen. On surmounting this rocky barrier, the traveller finds that the encircling rampart rises little above the normal level of the plateau. The physical aspect of the highlands is impressive. The northern portion lies mainly between 10° and 15° N. It consists of a huge mass of Archaean rocks with a mean height of above sea level, and is flooded in a deep central depression by the waters of
Lake Tana Lake Tana ( am, ጣና ሐይቅ, T’ana ḥāyik’i; previously Tsana) is the largest lake in Ethiopia and the source of the Blue Nile. Located in Amhara Region in the north-western Ethiopian Highlands, the lake is approximately long and wid ...
. Above the plateau rise several irregular and generally ill-defined mountain ranges which attain altitudes of from to just under . Many of the mountains are of unusual shape. Characteristic of the country are the enormous
fissures A fissure is a long, narrow crack opening along the surface of Earth. The term is derived from the Latin word , which means 'cleft' or 'crack'. Fissures emerge in Earth's crust, on ice sheets and glaciers, and on volcanoes. Ground fissure ...
which divide it, formed over time by the erosive action of water. They are the valleys of the rivers, which rising on the uplands or mountain sides, have cut their way to the surrounding lowlands. Some of the valleys are of considerable width; in other cases the opposite walls of the gorges are but two or three hundred meters apart, and fall almost vertically thousands of meters, representing an erosion of many hundred thousands cubic metres of hard rock. One result of the action of the water has been the formation of numerous isolated flat-topped hills or small plateaus, known as '' ambas'', with nearly perpendicular sides. The highest peaks are found in the Semien and Bale ranges. The Semien Mountains lie northeast of Lake Tana and culminate in the snow-covered peak of
Ras Dashen Ras Dashen (Amharic: ራስ ዳሸን ''rās dāshn''), also known as Ras Dejen, is the highest mountain in Ethiopia and fourteenth highest peak in Africa. Located in the Simien Mountains National Park in the North Gondar Zone of the Amhara Regi ...
, which has an altitude of . A few kilometers east and north respectively of Ras Dashen are Mounts Biuat and Abba Yared, whose summits are less than below that of Ras Dashen. The Bale Mountains are separated from the larger part of the Ethiopian highlands by the
Great Rift Valley The Great Rift Valley is a series of contiguous geographic trenches, approximately in total length, that runs from Lebanon in Asia to Mozambique in Southeast Africa. While the name continues in some usages, it is rarely used in geology as it ...
, one of the longest and most profound chasms in Ethiopia. The highest peaks of that range include Tullu Demtu, the second-highest mountain in Ethiopia (), Batu (), Chilalo () and
Mount Kaka Mount is often used as part of the name of specific mountains, e.g. Mount Everest. Mount or Mounts may also refer to: Places * Mount, Cornwall, a village in Warleggan parish, England * Mount, Perranzabuloe, a hamlet in Perranzabuloe parish, C ...
(). Parallel with the eastern escarpment are the heights of Biala, ,
Mount Abuna Yosef Abuna Yosef (Amharic language, Amharic: አቡነ ዮሴፍ) is a prominent mountain in the Lasta massif of the Ethiopian Highlands. At it is the 6th tallest mountain in Ethiopia and the Highest mountain peaks of Africa, 19th highest of Africa ...
, , and Kollo, , the last-named being southwest of Magdala. Between Lake Tana and the eastern hills are Mounts Guna, , and Uara Sahia, . In the
Choqa Mountains Cheqa or Choqa or Chaqa ( fa, چقا) may refer to: * Chaqa, Isfahan * Choqa, Kermanshah * Cheqa, Markazi * Chogha (disambiguation) Chogha or Chagha or Chegha ( fa, چغا) is a Persian word for a tell (archaeology), tell. It may also refer to: * ...
of Misraq Gojjam,
Mount Choqa Mount Choqa (also known as ጮቄ ተራራ (in Ge'ez) Ch'ok'e Terara and Mount Birhan) at , is one of the highest mountains of Debay Telategn Gojjam, a region of Ethiopia located south of Lake Tana. The mountain and its surrounding area lacks f ...
(also known as Mount Birhan) attains a height of . Below 10° N, the southern portion of the highlands has more open tableland than the northern portion and fewer lofty peaks. Though there are a few heights between , the majority do not exceed , but the general character of the southern regions is the same as in the north: a much-broken hilly plateau. East of the highlands towards the
Red Sea The Red Sea ( ar, البحر الأحمر - بحر القلزم, translit=Modern: al-Baḥr al-ʾAḥmar, Medieval: Baḥr al-Qulzum; or ; Coptic: ⲫⲓⲟⲙ ⲛ̀ϩⲁϩ ''Phiom Enhah'' or ⲫⲓⲟⲙ ⲛ̀ϣⲁⲣⲓ ''Phiom ǹšari''; T ...
there is a strip of lowland semi-desert, the
Ethiopian xeric grasslands and shrublands The Ethiopian xeric grasslands and shrublands ecoregion is a semi-desert strip on or near the Red Sea and the Gulf of Aden coasts in Eritrea, Ethiopia, Djibouti and Somaliland. This ecoregion lies mainly between sea level and 800 meters (m) eleva ...
.


Hydrology

Most of the Ethiopian uplands have a decided slope to the northwest, so that nearly all the large rivers flow in that direction to the
Nile The Nile, , Bohairic , lg, Kiira , Nobiin language, Nobiin: Áman Dawū is a major north-flowing river in northeastern Africa. It flows into the Mediterranean Sea. The Nile is the longest river in Africa and has historically been considered ...
, comprising some 85% of its water. Such are the
Tekezé River The Tekezé or Täkkäze River ( amh, ተከዜ, ti, ተከዘ; originally meaning "river" in Ge’ez, ), also spelled Takkaze, is a major river of Ethiopia. For part of its course it forms a section of the westernmost border of Ethiopia and Eri ...
in the north, the Abay in the center, and the Sobat in the south, and about four-fifths of the entire drainage is discharged through these three arteries. Another large river is the south-flowing
Omo Omo or OMO may refer to: Geography Ethiopia * Omo River (Ethiopia), in southern Ethiopia is the largest Ethiopian river outside the Nile Basin and namesake for all the topics below * Omo Nada, one of the woredas in the Oromia Region of Ethiopia ...
, with 14% of the entire drainage the largest river outside the above-mentioned three main arteries discharging to the west, and by far the main feeder of the
endorheic An endorheic basin (; also spelled endoreic basin or endorreic basin) is a drainage basin that normally retains water and allows no outflow to other external bodies of water, such as rivers or oceans, but drainage converges instead into lakes ...
Turkana Basin An '' Acacia'' tree in the Kokiselei river, northern Kenya The greater Turkana Basin in East Africa (mainly northwestern Kenya and southern Ethiopia, smaller parts of eastern Uganda and southeastern South Sudan) determines a large endorheic ba ...
with
Lake Turkana Lake Turkana (), formerly known as Lake Rudolf, is a lake in the Kenyan Rift Valley, in northern Kenya, with its far northern end crossing into Ethiopia. It is the world's largest permanent desert lake and the world's largest alkaline lake. B ...
. The rest is carried off by the Awash, which runs out in the saline lacustrine district along the border with
Djibouti Djibouti, ar, جيبوتي ', french: link=no, Djibouti, so, Jabuuti officially the Republic of Djibouti, is a country in the Horn of Africa, bordered by Somalia to the south, Ethiopia to the southwest, Eritrea in the north, and the Red ...
; by the
Shebelle River The Shebelle River ( so, Webi Shabeelle, ar, نهر شبيلي, am, እደላ) begins in the Ethiopian Highlands, highlands of Ethiopia, and then flows southeast into Somalia towards Mogadishu. Near Mogadishu, it turns sharply southwest, where ...
and the
Jubba Thawb ( ar, ثَوْب "garment"), also spelled thobe or tobe and known by various other names in different regions, is an ankle-length robe, usually with long sleeves. It is commonly worn in the Arabian Peninsula, the Middle East, North Afr ...
, which flow southeast through
Somalia Somalia, , Osmanya script: 𐒈𐒝𐒑𐒛𐒐𐒘𐒕𐒖; ar, الصومال, aṣ-Ṣūmāl officially the Federal Republic of SomaliaThe ''Federal Republic of Somalia'' is the country's name per Article 1 of thProvisional Constituti ...
, though the Shebelle most often fails to reach the Indian Ocean. The
Tekezé River The Tekezé or Täkkäze River ( amh, ተከዜ, ti, ተከዘ; originally meaning "river" in Ge’ez, ), also spelled Takkaze, is a major river of Ethiopia. For part of its course it forms a section of the westernmost border of Ethiopia and Eri ...
, which is the true upper course of the
Atbarah River The Atbarah River ( ar, نهر عطبرة; transliterated: Nahr 'Atbarah), also known as the Black Nile, is a river in northeast Africa. It rises in northwest Ethiopia, approximately 50 km north of Lake Tana and 30 km west of Gondar. ...
, has its headwaters in the central tableland; and falls from about . in the tremendous crevasse through which it sweeps west, north, forming part of the border with Eritrea, and west again down to the western terraces, where it passes from Ethiopia to Sudan. During the rains the Tekezé (i.e. the "Terrible") rises some above its normal level, and at this time forms an impassable barrier between the northern and central regions. In its lower course, the river is known by the Arabic name Setit. In Sudan, the Setit is joined (at ) by the Atbarah, a river formed by several streams which rise in the mountains west and northwest of
Lake Tana Lake Tana ( am, ጣና ሐይቅ, T’ana ḥāyik’i; previously Tsana) is the largest lake in Ethiopia and the source of the Blue Nile. Located in Amhara Region in the north-western Ethiopian Highlands, the lake is approximately long and wid ...
. The Gash or
Mareb Marib ( ar, مَأْرِب, Maʾrib; Old South Arabian: 𐩣𐩧𐩨/𐩣𐩧𐩺𐩨 ''Mryb/Mrb'') is the capital city of Marib Governorate, Yemen. It was the capital of the ancient kingdom of '' Sabaʾ'' ( ar, سَبَأ), which some scholars ...
, which forms part of the border with
Eritrea Eritrea ( ; ti, ኤርትራ, Ertra, ; ar, إرتريا, ʾIritriyā), officially the State of Eritrea, is a country in the Horn of Africa region of Eastern Africa, with its capital and largest city at Asmara. It is bordered by Ethiopia ...
, is the most northerly of the highland rivers which flow toward the Nile valley. Its headwaters rise on the landward side of the eastern escarpment within 80 km of Annesley Bay on the Red Sea. It reaches the Sudanese plains near
Kassala Kassala ( ar, كسلا) is the capital of the state of Kassala in eastern Sudan. Its 2008 population was recorded to be 419,030. Built on the banks of the Gash River, it is a market town and is famous for its fruit gardens. Many of its inhabita ...
, beyond which place its waters are dissipated in the sandy soil. The Mareb is dry for a great part of the year, but like the Takazze is subject to sudden freshets during the rainy season. Only the left bank of the upper course of the river is in Ethiopian territory. The Abay – that is, the upper course of the Blue Nile – has its source near Mount Denguiza in the Choqa mountains, around . It first flows for nearly due north to the south shore of Lake Tana. Tana, which stands below the normal level of the plateau, has somewhat the physical aspect of a flooded crater. It has an area of about , and a depth in some parts of . At the southeast corner the rim of the crater is, as it were, breached by a deep crevasse through which the Abay escapes, and here makes a great semicircular bend like that of the Tekezé, but in the reverse direction – east, south and north-west – down to the plains of
Sennar Sennar ( ar, سنار ') is a city on the Blue Nile in Sudan and possibly the capital of the state of Sennar. It remains publicly unclear whether Sennar or Singa is the capital of Sennar State. For several centuries it was the capital of the F ...
, where it takes the name of Bahr-el-Azrak or
Blue Nile The Blue Nile (; ) is a river originating at Lake Tana in Ethiopia. It travels for approximately through Ethiopia and Sudan. Along with the White Nile, it is one of the two major tributaries of the Nile and supplies about 85.6% of the water ...
. The Abay has many tributaries. Of these, the Bashilo rises near Magdala and drains eastern Amhara; the
Jamma The (formerly the , abbreviated JAMMA) is a Japanese trade association headquartered in Tokyo. JAMMA is run by representatives from various arcade video game manufacturers, including Bandai Namco, Sega, Taito, Koei Tecmo, Capcom, and Konami a ...
rises near Ankober and drains northern Shoa; the Muger rises near
Addis Ababa Addis Ababa (; am, አዲስ አበባ, , new flower ; also known as , lit. "natural spring" in Oromo), is the capital and largest city of Ethiopia. It is also served as major administrative center of the Oromia Region. In the 2007 census, t ...
and drains south-western Shoa; the Didessa, the largest of the Abay's affluents, rises in the Kaffa hills and has a generally south-to-north course; the
Dabus DABUS (Device for the Autonomous Bootstrapping of Unified Sentience) is an artificial intelligence (AI) system created by Stephen Thaler. It reportedly conceived two inventions. The filing of patent applications designating DABUS as inventor has led ...
runs near the western edge of the plateau escarpment. All these are perennial rivers. The right-hand tributaries, rising mostly on the western sides of the plateau, have steep slopes and are generally torrential in character. The Beles, however, is perennial, and the
Rahad Ar-Rahad ( ar, ٱلـرَّهَـد, "The Water-shrine") is a city located in the state of North Kordofan, Sudan, at an altitude of above sea level. It is about away from the capital, Khartoum. It is a major railway station linking East and Cent ...
and
Dinder Dinder (which means "the house in the valley") is a small village 2½ miles west of Shepton Mallet, and 2 miles east of Wells in Somerset. It falls within the civil parish of St Cuthbert Out and the Mendip district. The river Sheppey runs ...
are important rivers in flood-time. In the mountains and plateaus of Gambela and Kaffa in southwestern Ethiopia rise the Baro,
Gelo Gelon also known as Gelo (Greek: Γέλων ''Gelon'', ''gen.'': Γέλωνος; died 478 BC), son of Deinomenes, was a Greek tyrant of the Sicilian cities Gela and Syracuse, and first of the Deinomenid rulers. Early life Gelon was the son o ...
, Akobo and other chief affluents of the Sobat tributary of the Nile. The Akobo, in about , joins the
Pibor Pibor, also called Pibor Post, is a town in South Sudan. Location Pibor located in Pibor County, in Pibor Administrative Area, in eastern South Sudan, near the border with Ethiopia. It lies approximately , by road, northeast of Juba, the capital ...
, which in about unites with the Baro, the river below the confluence taking the name of Sobat. These rivers descend from the mountains in great falls, and like the other Ethiopian streams are unnavigable in their upper courses. The Baro on reaching the plain becomes, however, a navigable stream affording an open waterway to the Nile. The Baro, Pibor and Akobo form for the western and southwestern frontiers of Ethiopia. The chief river of Ethiopia flowing east is the
Awash River The Awash (sometimes spelled Awaash; Oromo: ''Awaash'', Amharic: አዋሽ, Afar: ''We'ayot'', Somali: ''Webiga Dir'') is a major river of Ethiopia. Its course is entirely contained within the boundaries of Ethiopia and empties into a chain of ...
(or Awasi), which rises in the Shewan uplands and makes a semicircular bend first southeast and then northeast. It reaches the
Afar Depression The Afar Triangle (also called the Afar Depression) is a geological depression caused by the Afar Triple Junction, which is part of the Great Rift Valley in East Africa. The region has disclosed fossil specimens of the very earliest hominins; th ...
through a broad breach in the eastern escarpment of the plateau, beyond which it is joined on its left bank by its chief affluent, the Germama (Kasam), and then trends round in the direction of the
Gulf of Tadjoura The Gulf of Tadjoura (; ) is a gulf or basin of the Indian Ocean in the Horn of Africa. It lies south of the straits of Bab-el-Mandeb, or the entrance to the Red Sea, at . The gulf has many fishing grounds, extensive coral reefs, and abundant pea ...
. Here the Awash is a copious stream nearly wide and deep, even in the dry season, and during the floods rising above low-water mark, thus inundating the plains for many kilometers along both its banks. After a winding course of about , the Awash River passes (in its lower reaches) through a series of badds (lagoons) to
Lake Abbe Lake Abbe, also known as Lake Abhe Bad, is a salt lake, lying on the Ethiopia-Djibouti border. It is one of a chain of six connected lakes, which also includes (from north to south) lakes Gargori, Laitali, Gummare, Bario and Afambo. The lake i ...
(or Abhe Bid) on the border with Djibouti and some from the head of the
Gulf of Tadjoura The Gulf of Tadjoura (; ) is a gulf or basin of the Indian Ocean in the Horn of Africa. It lies south of the straits of Bab-el-Mandeb, or the entrance to the Red Sea, at . The gulf has many fishing grounds, extensive coral reefs, and abundant pea ...
. In this lake the Awash river is lost. This remarkable phenomenon is explained by the position of Lake Abbe in the centre of a saline lacustrine depression several hundred meters below sea level. While most of the other lagoons are highly saline, with thick incrustations of salt round their margins, Lake Abbe remains fresh throughout the year, owing to the great body of water discharged into it by the Awash. Another lacustrine region extends from the Shoan heights southwest to the Samburu (
Lake Turkana Lake Turkana (), formerly known as Lake Rudolf, is a lake in the Kenyan Rift Valley, in northern Kenya, with its far northern end crossing into Ethiopia. It is the world's largest permanent desert lake and the world's largest alkaline lake. B ...
) depression. In this chain of scenic upland lakes – some fresh, some
brackish Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estuari ...
, some completely closed, others connected by short channels – the chief links in their order from north to south are:
Zway Batu ( om, Baatuu), formerly Zway or Ziway,Arsi Zone Arsi ( om, Godina Arsii) is a zone in Oromia Region of Ethiopia, named after a clan of the Oromo, who inhabit in the area. Arsi is bordered on the south by Bale Zone, on the southwest by the West Arsi Zone, on the northwest by East Shewa Zone, ...
; then Abijatta with an outlet to a smaller turn to the Baroda and Gamo areas, skirted on the west sides by grassy slopes and wooded ranges from to nearly high; lastly,
Lake Chew Bahir Lake Chew Bahir (Amharic: ጨው ባሕር ''č̣ew bāhir'', "salty lake") or Lake Istifanos, also called Stefanie, Basso Naebor and Chuwaha, is a lake in southern Ethiopia, located on the southwestern end of the Southern Nations, Nationalities ...
(formerly known as Lake Stephanie) which is completely closed and falling to a level of about above sea level. To the same system belongs the neighbouring Lake Turkana, which is larger than all the rest put together. This lake receives at its northern end the waters of the Omo, which rises in the Shoan highlands and is a perennial river with many affluents. In its course of some it has a total fall of about , from at its source to c. at lake level, and is consequently a rapid stream, being broken by the Kokobi and other falls, and navigable only for a short distance above its mouth. The chief rivers of Somalia, the Shebelle and the Jubba, rise on the southeastern slopes of the Ethiopian escarpment as the Shebelle, the Ganale Doria and the Dawa, and part of their course is through territory belonging to Ethiopia. There are numerous
hot spring A hot spring, hydrothermal spring, or geothermal spring is a spring produced by the emergence of geothermally heated groundwater onto the surface of the Earth. The groundwater is heated either by shallow bodies of magma (molten rock) or by circ ...
s in Ethiopia, such as
Sodere __NOTOC__ Sodere ( om, Sodaree) a spa town in central Ethiopia. Located approximately 25 kilometres south of Adama and 120 kilometres southeast of Addis Ababa in the East Shewa Zone of the Oromia Region, this town has a latitude and longitude of ...
.


Geology

The East African
tableland A table or tableland is a butte, flank of a mountain, or mountain, that has a flat top. This kind of landform has numerous names, including: * Butte * Mesa * * Potrero * Tepui * Terrace * Tuya A tuya is a flat-topped, steep-sided vol ...
is continued into Ethiopia. A pioneering study of the geology of Ethiopia was W. T. Blanford's work in 1870. More recent work has focused on the
Afar Depression The Afar Triangle (also called the Afar Depression) is a geological depression caused by the Afar Triple Junction, which is part of the Great Rift Valley in East Africa. The region has disclosed fossil specimens of the very earliest hominins; th ...
, due to its importance as one of two places on Earth where a
mid-ocean ridge A mid-ocean ridge (MOR) is a seafloor mountain system formed by plate tectonics. It typically has a depth of about and rises about above the deepest portion of an ocean basin. This feature is where seafloor spreading takes place along a diverge ...
can be studied on land (the other is
Iceland Iceland ( is, Ísland; ) is a Nordic island country in the North Atlantic Ocean and in the Arctic Ocean. Iceland is the most sparsely populated country in Europe. Iceland's capital and largest city is Reykjavík, which (along with its s ...
). The following formations are represented: ;
Sedimentary Sedimentary rocks are types of rock (geology), rock that are formed by the accumulation or deposition of mineral or organic matter, organic particles at Earth#Surface, Earth's surface, followed by cementation (geology), cementation. Sedimentati ...
and
metamorphic Metamorphic rocks arise from the transformation of existing rock to new types of rock in a process called metamorphism. The original rock (protolith) is subjected to temperatures greater than and, often, elevated pressure of or more, causin ...
:* Recent:
Coral Corals are marine invertebrates within the class Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the important reef builders that inhabit tropical oceans and sec ...
,
alluvium Alluvium (from Latin ''alluvius'', from ''alluere'' 'to wash against') is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings. Alluv ...
,
sand Sand is a granular material composed of finely divided mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt. Sand can also refer to a textural class of s ...
:*
Tertiary Tertiary ( ) is a widely used but obsolete term for the geologic period from 66 million to 2.6 million years ago. The period began with the demise of the non-avian dinosaurs in the Cretaceous–Paleogene extinction event, at the start ...
:
Limestone Limestone ( calcium carbonate ) is a type of carbonate sedimentary rock which is the main source of the material lime. It is composed mostly of the minerals calcite and aragonite, which are different crystal forms of . Limestone forms whe ...
s of
Harrar Harar ( amh, ሐረር; Harari: ሀረር; om, Adare Biyyo; so, Herer; ar, هرر) known historically by the indigenous as Gey (Harari: ጌይ ''Gēy'', ) is a walled city in eastern Ethiopia. It is also known in Arabic as the City of Sai ...
:*
Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ...
:
Antalo Limestone The Antalo Limestone, also known as the Antalo Sequence, is a geological formation in Ethiopia. It is between 300 and 800 metres thick and comprises fossiliferous limestones and marls that were deposited in a reef. Marine microfossils have shown a ...
s :*
Triassic The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period ...
:
Adigrat Sandstone The Adigrat Sandstone formation in north Ethiopia, in a wide array of reddish colours, comprises sandstones with coarse to fine grains, and locally conglomerates, silt- and claystones. Given the many lateritic palaeosols and locally fossil wood ...
s :* Archaean:
Gneiss Gneiss ( ) is a common and widely distributed type of metamorphic rock. It is formed by high-temperature and high-pressure metamorphic processes acting on formations composed of igneous or sedimentary rocks. Gneiss forms at higher temperatures an ...
es,
schist Schist ( ) is a medium-grained metamorphic rock showing pronounced schistosity. This means that the rock is composed of mineral grains easily seen with a low-power hand lens, oriented in such a way that the rock is easily split into thin flakes o ...
s,
slaty Slate gray is a gray color with a slight azure tinge that is a representation of the average color of the material slate. As a tertiary color, slate is an equal mix of purple and green pigments. Slaty, referring to this color, is often used ...
rocks ;
Igneous Igneous rock (derived from the Latin word ''ignis'' meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or ...
:* Recent:
Aden Aden ( ar, عدن ' Yemeni: ) is a city, and since 2015, the temporary capital of Yemen, near the eastern approach to the Red Sea (the Gulf of Aden), some east of the strait Bab-el-Mandeb. Its population is approximately 800,000 people. ...
Volcanic Series :* Tertiary, Cretaceous: Magdala group :* Jurassic: Ashangi group Archaean.– The metamorphic rocks compose the main mass of the tableland, and are exposed in every deep valley in Tigre and along the valley of the Blue Nile. Mica-schists form the prevalent rocks. Hornblende schists also occur and a compact feldspathic rock in the Suris defile. The
folia ''La Folía'' (Spanish), or ''Follies'' (English), also known as ''folies d'Espagne'' (French), ''La Follia'' (Italian), and ''Folia'' (Portuguese), is one of the oldest remembered European musical themes, or primary material, generally melodic, ...
of the schists strike north and south.
Triassic The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period ...
.– In the region of
Adigrat Adigrat (, ''ʿaddigrat'', also called ʿAddi Grat) is a city and separate woreda in Tigray Region of Ethiopia. It is located in the Misraqawi Zone at longitude and latitude , with an elevation of above sea level and below a high ridge to the we ...
the metamorphic rocks are invariably overlain by white and brown sandstones, unfossiliferous, and attaining a maximum thickness of 300 m. They are overlain by the fossiliferous limestones of the Antalo group. Around Chelga and Adigrat coal-bearing beds occur, which Blanford suggests may be of the same age as the coal-bearing strata of
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...
. The
Adigrat Sandstone The Adigrat Sandstone formation in north Ethiopia, in a wide array of reddish colours, comprises sandstones with coarse to fine grains, and locally conglomerates, silt- and claystones. Given the many lateritic palaeosols and locally fossil wood ...
possibly represents some portion of the
Karoo System The Karoo Supergroup is the most widespread stratigraphic unit in Africa south of the Kalahari Desert. The supergroup consists of a sequence of units, mostly of nonmarine origin, deposited between the Late Carboniferous and Early Jurassic, a peri ...
of South Africa.
Jurassic The Jurassic ( ) is a Geological period, geologic period and System (stratigraphy), stratigraphic system that spanned from the end of the Triassic Period million years ago (Mya) to the beginning of the Cretaceous Period, approximately Mya. The J ...
.– The fossiliferous
Antalo Limestone The Antalo Limestone, also known as the Antalo Sequence, is a geological formation in Ethiopia. It is between 300 and 800 metres thick and comprises fossiliferous limestones and marls that were deposited in a reef. Marine microfossils have shown a ...
s are generally horizontal, but are in places much disturbed when interstratified with Mekelle Dolerite. The fossils are all characteristic Oolite forms and include species of Hemicidaris, Pholadomya, Ceromya, Trigonia and Alaria.
Igneous Igneous rock (derived from the Latin word ''ignis'' meaning fire), or magmatic rock, is one of the three main rock types, the others being sedimentary and metamorphic. Igneous rock is formed through the cooling and solidification of magma or ...
Rocks.– Above a height of the country consists of bedded traps belonging to two distinct and unconformable groups. The lower ( Ashangi group) consists of basalts and dolerites often amygdaloidal. Their relation to the Antalo limestones is uncertain, but Blanford considers them to be not later in age than the Oolite. The upper (Magdala group) contains much trachytic rock of considerable thickness, lying perfectly horizontally, and giving rise to a series of terraced ridges characteristic of central Ethiopia. They are interbedded with unfossiliferous sandstones and shales. Of more recent date (probably Tertiary) are some igneous rocks, rich in alkalis, occurring in certain localities in southern Ethiopia. Of still more recent date are the basalts and ashes west of Massawa and around Annesley Bay and known as the Aden Volcanic Series. With regard to the older igneous rocks, the enormous amount they have suffered from denudation is a prominent feature. They have been worn into deep and narrow ravines, sometimes to a depth of .


Climate

The climate of Ethiopia and its dependent territories varies greatly. It is temperate on the plateau and hot in the lowlands. The country lies wholly within the tropics, but its nearness to the
equator The equator is a circle of latitude, about in circumference, that divides Earth into the Northern and Southern hemispheres. It is an imaginary line located at 0 degrees latitude, halfway between the North and South poles. The term can als ...
is counterbalanced by the elevation of the land. At
Addis Ababa Addis Ababa (; am, አዲስ አበባ, , new flower ; also known as , lit. "natural spring" in Oromo), is the capital and largest city of Ethiopia. It is also served as major administrative center of the Oromia Region. In the 2007 census, t ...
, which ranges from , maximum temperature is and minimum . The weather is usually sunny and dry, but the short (''belg'') rains occur from February to April and the large (''meher'') rains from mid-June to mid-September. Over the greater part of Ethiopia as well as the
Oromia Oromia (Amharic: ) ( om, Oromiyaa) is a regional state in Ethiopia and the homeland of the Oromo people. The capital of Oromia is Addis Ababa. It is bordered by the Somali Region to the east; the Amhara Region, the Afar Region and the Benish ...
highlands, the climate is very healthy and temperate. However, in the deep valleys of the Tekezé and Abay, and generally in places below , the conditions are tropical and diseases such as
malaria Malaria is a mosquito-borne infectious disease that affects humans and other animals. Malaria causes symptoms that typically include fever, tiredness, vomiting, and headaches. In severe cases, it can cause jaundice, seizures, coma, or death. S ...
are prevalent. The
Somali Region The Somali Region ( so, Deegaanka Soomaalida, am, ሱማሌ ክልል, Sumalē Kilil, ar, المنطقة الصومالية), also known as Soomaali Galbeed (''Western Somalia'') and officially the Somali Regional State, is a regional state ...
and the
Danakil Depression The Danakil Depression is the northern part of the Afar Triangle or Afar Depression in Ethiopia, a geological depression that has resulted from the divergence of three tectonic plates in the Horn of Africa. Geology The Danakil Depression lies ...
in the
Afar Region The Afar Region (; aa, Qafar Rakaakayak; am, አፋር ክልል), formerly known as Region 2, is a regional state in northeastern Ethiopia and the homeland of the Afar people. Its capital is the planned city of Semera, which lies on the pave ...
have a hot, sunny and dry climate producing fully desert or semi-desert conditions. The terrain in the lower basin of the Sobat is hot, swampy and malarious. In the uplands, the air is cool and bracing in summer, and in winter very bleak. The mean range of temperature is between . On the higher mountains the climate is
alpine Alpine may refer to any mountainous region. It may also refer to: Places Europe * Alps, a European mountain range ** Alpine states, which overlap with the European range Australia * Alpine, New South Wales, a Northern Village * Alpine National Pa ...
in character. The atmosphere on the plateaus is exceedingly clear, so that objects are easily recognizable at great distances. In addition to the variation in climate dependent on elevation, the year may be divided into three seasons. Winter, or the cold season, lasts from October to February. It is followed by a dry hot period, which about the middle of June gives place to the rainy season. The rain is heaviest in the Tekezé basin in July and August. In the former provinces of
Gojjam Gojjam ( ''gōjjām'', originally ጐዛም ''gʷazzam'', later ጐዣም ''gʷažžām'', ጎዣም ''gōžžām'') is a historical province in northwestern Ethiopia, with its capital city at Debre Marqos. Gojjam's earliest western boundary ex ...
and
Welega Welega (also spelled Wollega; ; am, ወለጋ) was a Provinces of Ethiopia, province in western Ethiopia, with its capital city at Nekemte. It was named for the Wollega Oromo, who are the majority of the population within its boundaries. Weleg ...
, heavy rains continue till the middle of September. October is occasionally a wet month. There are also spring and winter rains; indeed rain often falls in every month of the year. But the rainy season proper, caused by the southwest monsoon, lasts from June to mid-September, and commencing in the north moves southward. In the region of the headwaters of the Sobat the rains begin earlier and last longer. The rainfall varies from about a year in Tigray and Amhara to over in parts of Oromia. The rainy season is of great importance not only to Ethiopia but to the countries of the Nile valley, as the prosperity of the eastern Sudan and
Egypt Egypt ( ar, مصر , ), officially the Arab Republic of Egypt, is a transcontinental country spanning the northeast corner of Africa and southwest corner of Asia via a land bridge formed by the Sinai Peninsula. It is bordered by the Mediter ...
is largely dependent upon the rainfall. A season of light rain may be sufficient for the needs of Ethiopia, but there is little surplus water to find its way to the Nile; and a shortness of rain means a low Nile, as practically all the flood water of that river is derived from the Ethiopian tributaries.


Flora and fauna


Flora

As in a day's journey the traveller may pass from tropical to almost Alpine conditions of climate, so great also is the range of the flora and fauna. In the valleys and lowlands the vegetation is dense, but the general appearance of the plateaus is of a comparatively bare country with trees and bushes thinly scattered over it. The glens and ravines on the hillside are often thickly wooded, and offer a delightful contrast to the open downs. These conditions are particularly characteristic of the northern regions; in the south the vegetation on the uplands is more luxuriant. Among the many varieties of trees and plants found are the date palm,
mimosa ''Mimosa'' is a genus of about 590 species of herbs and shrubs, in the mimosoid clade of the legume family Fabaceae. The generic name is derived from the Greek word (''mimos''), an "actor" or "mime", and the feminine suffix -''osa'', "resembl ...
, wild
olive The olive, botanical name ''Olea europaea'', meaning 'European olive' in Latin, is a species of small tree or shrub in the family Oleaceae, found traditionally in the Mediterranean Basin. When in shrub form, it is known as ''Olea europaea'' ...
, giant
sycamore Sycamore is a name which has been applied to several types of trees, but with somewhat similar leaf forms. The name derives from the ancient Greek ' (''sūkomoros'') meaning "fig-mulberry". Species of trees known as sycamore: * ''Acer pseudoplata ...
s,
juniper Junipers are coniferous trees and shrubs in the genus ''Juniperus'' () of the cypress family Cupressaceae. Depending on the taxonomy, between 50 and 67 species of junipers are widely distributed throughout the Northern Hemisphere, from the Arcti ...
s and
laurels ''Laurus nobilis'' is an aromatic evergreen tree or large shrub with green, glabrous (smooth) leaves. It is in the flowering plant family Lauraceae. It is native to the Mediterranean region and is used as bay leaf for seasoning in cookin ...
, the
myrrh Myrrh (; from Semitic, but see '' § Etymology'') is a gum-resin extracted from a number of small, thorny tree species of the genus ''Commiphora''. Myrrh resin has been used throughout history as a perfume, incense and medicine. Myrrh mi ...
and other gum trees (gnarled and stunted, these flourish most on the eastern foothills), a magnificent pine (the Natal yellow pine, which resists the attacks of the white ant), the
fig The fig is the edible fruit of ''Ficus carica'', a species of small tree in the flowering plant family Moraceae. Native to the Mediterranean and western Asia, it has been cultivated since ancient times and is now widely grown throughout the world ...
, orange,
lime Lime commonly refers to: * Lime (fruit), a green citrus fruit * Lime (material), inorganic materials containing calcium, usually calcium oxide or calcium hydroxide * Lime (color), a color between yellow and green Lime may also refer to: Botany ...
,
pomegranate The pomegranate (''Punica granatum'') is a fruit-bearing deciduous shrub in the family Lythraceae, subfamily Punicoideae, that grows between tall. The pomegranate was originally described throughout the Mediterranean Basin, Mediterranean re ...
,
peach The peach (''Prunus persica'') is a deciduous tree first domesticated and cultivated in Zhejiang province of Eastern China. It bears edible juicy fruits with various characteristics, most called peaches and others (the glossy-skinned, non-fu ...
,
apricot An apricot (, ) is a fruit, or the tree that bears the fruit, of several species in the genus ''Prunus''. Usually, an apricot is from the species '' P. armeniaca'', but the fruits of the other species in ''Prunus'' sect. ''Armeniaca'' are also ...
, banana, and other fruit trees; the grape vine (rare),
blackberry The blackberry is an edible fruit produced by many species in the genus ''Rubus'' in the family Rosaceae, hybrids among these species within the subgenus ''Rubus'', and hybrids between the subgenera ''Rubus'' and ''Idaeobatus''. The taxonomy of ...
, and
raspberry The raspberry is the edible fruit of a multitude of plant species in the genus ''Rubus'' of the rose family, most of which are in the subgenus '' Idaeobatus''. The name also applies to these plants themselves. Raspberries are perennial with w ...
; the cotton and indigo plants, and occasionally the
sugar cane Sugarcane or sugar cane is a species of (often hybrid) tall, perennial grass (in the genus ''Saccharum'', tribe Andropogoneae) that is used for sugar production. The plants are 2–6 m (6–20 ft) tall with stout, jointed, fibrous stalks t ...
. There are in the south large forests of valuable timber trees; and the coffee plant is indigenous in the Kaffa country, whence it takes its name. Many kinds of
grass Poaceae () or Gramineae () is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos and the grasses of natural grassland and species cultivated in lawns an ...
es and
flower A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechani ...
s abound. Large areas are covered by the
kosso ''Hagenia'' is a monotypic genus of flowering plant with the sole species ''Hagenia abyssinica'', native to the high-elevation Afromontane regions of central and eastern Africa. It also has a disjunct distribution in the high mountains of East ...
, a hardy member of the
rose A rose is either a woody perennial flowering plant of the genus ''Rosa'' (), in the family Rosaceae (), or the flower it bears. There are over three hundred species and tens of thousands of cultivars. They form a group of plants that can be ...
family, which grows from high and has abundant pendent red blossoms. The flowers and the leaves of this plant are highly prized for medicinal purposes. The fruit of the hurarina, a tree found almost exclusively in Shoa, yields a black grain highly esteemed as a spice. On the tableland a great variety of cereals and vegetables are cultivated. A fibrous plant, known as the
sansevieria ''Sansevieria'' is a historically recognized genus of flowering plants, native to Africa, notably Madagascar, and southern Asia, now included in the genus '' Dracaena'' on the basis of molecular phylogenetic studies. Common names for the 70 or s ...
, grows in a wild state in the semi-desert regions of the north and south-east.


Fauna

In addition to the domestic animals enumerated below the fauna is very varied. Elephant can be found in certain low-lying districts, especially in the Sobat valley. The
hippopotamus The hippopotamus ( ; : hippopotamuses or hippopotami; ''Hippopotamus amphibius''), also called the hippo, common hippopotamus, or river hippopotamus, is a large semiaquatic mammal native to sub-Saharan Africa. It is one of only two extan ...
and crocodile inhabit the larger rivers flowing west, but are not found in the Hawash, in which, however,
otter Otters are carnivorous mammals in the subfamily Lutrinae. The 13 extant otter species are all semiaquatic, aquatic, or marine, with diets based on fish and invertebrates. Lutrinae is a branch of the Mustelidae family, which also includes wea ...
s of large size are plentiful. Lions abound in the low countries and in Somaliland. In central Ethiopia the lion is no longer found except occasionally in the river valleys.
Leopard The leopard (''Panthera pardus'') is one of the five extant species in the genus '' Panthera'', a member of the cat family, Felidae. It occurs in a wide range in sub-Saharan Africa, in some parts of Western and Central Asia, Southern Russia, a ...
s, both spotted and black, are numerous and often of great size;
hyena Hyenas, or hyaenas (from Ancient Greek , ), are feliform carnivoran mammals of the family Hyaenidae . With only four extant species (each in its own genus), it is the fifth-smallest family in the Carnivora and one of the smallest in the clas ...
s are found everywhere and are hardy and fierce; the
lynx A lynx is a type of wild cat. Lynx may also refer to: Astronomy * Lynx (constellation) * Lynx (Chinese astronomy) * Lynx X-ray Observatory, a NASA-funded mission concept for a next-generation X-ray space observatory Places Canada * Lynx, Ontar ...
, African wolf,
wild dog A free-ranging dog is a dog that is not confined to a yard or house. Free-ranging dogs include street dogs, village dogs, stray dogs, feral dogs, etc., and may be owned or unowned. The global dog population is estimated to be 900 million, of w ...
and
jackal Jackals are medium-sized canids native to Africa and Eurasia. While the word "jackal" has historically been used for many canines of the subtribe canina, in modern use it most commonly refers to three species: the closely related black-backed ...
are also common.
Boar The wild boar (''Sus scrofa''), also known as the wild swine, common wild pig, Eurasian wild pig, or simply wild pig, is a suid native to much of Eurasia and North Africa, and has been introduced to the Americas and Oceania. The species is no ...
s and
badger Badgers are short-legged omnivores in the family Mustelidae (which also includes the otters, wolverines, martens, minks, polecats, weasels, and ferrets). Badgers are a polyphyletic rather than a natural taxonomic grouping, being united b ...
s are more rarely seen. The giraffe is found in the western districts, the zebra and wild ass frequent the lower plateaus and the rocky hills of the north. There are large herds of buffalo and
antelope The term antelope is used to refer to many species of even-toed ruminant that are indigenous to various regions in Africa and Eurasia. Antelope comprise a wastebasket taxon defined as any of numerous Old World grazing and browsing hoofed mammals ...
, and
gazelle A gazelle is one of many antelope species in the genus ''Gazella'' . This article also deals with the seven species included in two further genera, ''Eudorcas'' and ''Nanger'', which were formerly considered subgenera of ''Gazella''. A third f ...
s of many varieties and in great numbers are met with in most parts of the country. Among the varieties are the greater and lesser
kudu The kudus are two species of antelope of the genus '' Tragelaphus'': * Lesser kudu, ''Tragelaphus imberbis'', of eastern Africa * Greater kudu, ''Tragelaphus strepsiceros'', of eastern and southern Africa The two species look similar, th ...
(both rather rare); the
duiker A duiker is a small to medium-sized brown antelope native to sub-Saharan Africa, found in heavily wooded areas. The 22 extant species, including three sometimes considered to be subspecies of the other species, form the subfamily Cephalophina ...
,
gemsbok The gemsbok or South African oryx (''Oryx gazella'') is a large antelope in the genus ''Oryx''. It is native to the extremely dry, arid regions of Southern Africa; notably, the Kalahari Desert. Some authorities formerly classified the East Afric ...
,
hartebeest The hartebeest (; ''Alcelaphus buselaphus''), also known as kongoni or kaama, is an African antelope. It is the only member of the genus ''Alcelaphus''. Eight subspecies have been described, including two sometimes considered to be indepen ...
,
gerenuk The gerenuk (; so, garanuug; ''Litocranius walleri''), also known as the giraffe gazelle, is a long-necked antelope found in parts of East Africa. The sole member of the genus ''Litocranius'', the gerenuk was first described by the naturalist ...
(the most common—it has long thin legs and a camel-like neck);
klipspringer The klipspringer (; ''Oreotragus oreotragus'') is a small antelope found in eastern and southern Africa. The sole member of its genus and subfamily/tribe, the klipspringer was first described by German zoologist Eberhard August Wilhelm von Zim ...
, found on the high plateaus as well as in the lower districts; and the
dik-dik A dik-dik is the name for any of four species of small antelope in the genus ''Madoqua'' that live in the bushlands of eastern and southern Africa. Dik-diks stand about at the shoulder, are long, weigh and can live for up to 10 years. Dik- ...
, the smallest of the
antelope The term antelope is used to refer to many species of even-toed ruminant that are indigenous to various regions in Africa and Eurasia. Antelope comprise a wastebasket taxon defined as any of numerous Old World grazing and browsing hoofed mammals ...
s, its weight rarely exceeding , common in the low countries and the foothills. The
African civet The African civet (''Civettictis civetta'') is a large viverrid native to sub-Saharan Africa, where it is considered common and widely distributed in woodlands and secondary forests. It is listed as Least Concern on the IUCN Red List since 2008 ...
is found in many parts of Ethiopia, but chiefly in the Galla regions. Squirrels and
hare Hares and jackrabbits are mammals belonging to the genus ''Lepus''. They are herbivores, and live solitarily or in pairs. They nest in slight depressions called forms, and their young are able to fend for themselves shortly after birth. The ge ...
s are numerous, as are several kinds of monkeys, notably the guereza,
gelada The gelada (''Theropithecus gelada'', am, ጭላዳ, translit=č̣əlada), sometimes called the bleeding-heart monkey or the gelada baboon, is a species of Old World monkey found only in the Ethiopian Highlands, living at elevations of above se ...
,
guenon The guenons (, ) are Old World monkeys of the genus ''Cercopithecus'' (). Not all members of this genus have the word "guenon" in their common names; also, because of changes in scientific classification, some monkeys in other genera may have co ...
and dog-faced baboon. They range from the tropical lowlands to heights of . Numerous
eagle Eagle is the common name for many large birds of prey of the family Accipitridae. Eagles belong to several groups of genera, some of which are closely related. Most of the 68 species of eagle are from Eurasia and Africa. Outside this area, just ...
s, vultures,
hawk Hawks are bird of prey, birds of prey of the family Accipitridae. They are widely distributed and are found on all continents except Antarctica. * The subfamily Accipitrinae includes goshawks, sparrowhawks, sharp-shinned hawks and others. Th ...
s, bustards and other birds of prey live in Ethiopia, as well as
partridge A partridge is a medium-sized Galliformes, galliform bird in any of several genera, with a wide Indigenous (ecology), native distribution throughout parts of Europe, Asia and Africa. Several species have been introduced to the Americas. They a ...
s,
guineafowl Guineafowl (; sometimes called "pet speckled hens" or "original fowl") are birds of the family Numididae in the order Galliformes. They are endemic to Africa and rank among the oldest of the gallinaceous birds. Phylogenetically, they branched o ...
,
sandgrouse Sandgrouse is the common name for Pteroclidae , a family (biology), family of sixteen species of bird, members of the order Pterocliformes . They are traditionally placed in two Genus, genera. The two central Asian species are classified as ''Sy ...
,
curlew The curlews () are a group of nine species of birds in the genus ''Numenius'', characterised by their long, slender, downcurved bills and mottled brown plumage. The English name is imitative of the Eurasian curlew's call, but may have been in ...
s,
woodcock The woodcocks are a group of seven or eight very similar living species of wading birds in the genus ''Scolopax''. The genus name is Latin for a snipe or woodcock, and until around 1800 was used to refer to a variety of waders. The English name ...
,
snipe A snipe is any of about 26 wading bird species in three genera in the family Scolopacidae. They are characterized by a very long, slender bill, eyes placed high on the head, and cryptic/camouflaging plumage. The ''Gallinago'' snipes have a near ...
, pigeons, thrushes and swallows are very plentiful. A fine variety of ostrich is commonly found. Among the birds prized for their plumage are the marabou, crane,
heron The herons are long-legged, long-necked, freshwater and coastal birds in the family Ardeidae, with 72 recognised species, some of which are referred to as egrets or bitterns rather than herons. Members of the genera ''Botaurus'' and ''Ixobrychus ...
, blackbird, parrot and
jay A jay is a member of a number of species of medium-sized, usually colorful and noisy, passerine birds in the Crow family, Corvidae. The evolutionary relationships between the jays and the magpies are rather complex. For example, the Eurasian m ...
s of extraordinary brilliance. Among insects the most numerous and useful is the bee,
honey Honey is a sweet and viscous substance made by several bees, the best-known of which are honey bees. Honey is made and stored to nourish bee colonies. Bees produce honey by gathering and then refining the sugary secretions of plants (primar ...
everywhere constituting an important part of the food of the inhabitants. Of an opposite class is the
locust Locusts (derived from the Vulgar Latin ''locusta'', meaning grasshopper) are various species of short-horned grasshoppers in the family Acrididae that have a swarming phase. These insects are usually solitary, but under certain circumstanc ...
. There are thousands of varieties of
butterflies Butterflies are insects in the macrolepidopteran clade Rhopalocera from the Order (biology), order Lepidoptera, which also includes moths. Adult butterflies have large, often brightly coloured wings, and conspicuous, fluttering flight. The ...
and other insects. Snakes are not numerous, but several species are
venom Venom or zootoxin is a type of toxin produced by an animal that is actively delivered through a wound by means of a bite, sting, or similar action. The toxin is delivered through a specially evolved ''venom apparatus'', such as fangs or a sti ...
ous.


Natural resources and land use

Ethiopia has small reserves of gold, platinum, copper, potash, and natural gas. It has extensive hydropower potential. Of the total land area, about 20 percent is under cultivation, although the amount of potentially arable land is larger. Only about 10 to 15 percent of the land area is presently covered by forest as a result of rapid deforestation during the last 30 years. Of the remainder, a large portion is used as pasturage. Some land is too rugged, dry, or infertile for agriculture or any other use.


Environmental issues


Disputed border


Eritrea

The border between Ethiopia and Eritrea has never been precisely demarcated.Country study – Library of Congress (PDF)
/ref> Between 1998 and 2000, the two countries fought a war over the issue, which involves quite small enclaves along the northern segment of their border, including the tiny village of
Badme Badme ( ti, ባድመ, ) is a town in Gash-Barka region of Eritrea. Control of the town was at the centre of the Eritrean–Ethiopian border conflict, which lasted from the beginning of the Eritrean–Ethiopian War, in 1998, to the signing of ...
and the enclave of the
Irob people The Irob people ( Ge'ez: ኢሮብ ''ʾirōb'', also spelled Erob) are an ethnic group who live in a predominantly highland, mountainous area by the same name in northeastern Tigray Region, Ethiopia. They speak the Saho language. Most of them pro ...
. An international boundary commission delimited the border in 2002. Although both nations agreed to accept its decision, Ethiopia has refused to accept the commission's findings in full, much to the consternation of the Eritrean government.


Somalia

The central section of Ethiopia's border with Somalia also has never been fully demarcated, and is only provisional. Prior to 1950, the border between Somalia and Ethiopia was characterized by the 1908 Convention Line or
Feerfeer-Dharkayn Geenyo Line Ciid or 'Iid ( so, Arlo Ciideed) is an archaic native geographic name for the land between the region of Mudug and the Nugaal Valley, roughly congruous with the northern Bookh district in Ethiopia. As such, Ciid constitutes the tripoint of the fo ...
. Area Handbook for Somalia - Volume 550 , Irving Kaplan · 1977 , PAGE 22 Questions remain about the precise location of small parcels along the border with Sudan as well.


Statistics

; Location : Eastern Africa, west of
Somalia Somalia, , Osmanya script: 𐒈𐒝𐒑𐒛𐒐𐒘𐒕𐒖; ar, الصومال, aṣ-Ṣūmāl officially the Federal Republic of SomaliaThe ''Federal Republic of Somalia'' is the country's name per Article 1 of thProvisional Constituti ...
; Geographic coordinates: : ; Map references: : Africa ; Area: :* Total: 1,127,127 km² :* Land: 1,119,683 km² :* Water: 7,444 km² ; Land boundaries: :* Total: 59,251 km :* Border countries:
Djibouti Djibouti, ar, جيبوتي ', french: link=no, Djibouti, so, Jabuuti officially the Republic of Djibouti, is a country in the Horn of Africa, bordered by Somalia to the south, Ethiopia to the southwest, Eritrea in the north, and the Red ...
343 km,
Eritrea Eritrea ( ; ti, ኤርትራ, Ertra, ; ar, إرتريا, ʾIritriyā), officially the State of Eritrea, is a country in the Horn of Africa region of Eastern Africa, with its capital and largest city at Asmara. It is bordered by Ethiopia ...
1,033 km,
Kenya ) , national_anthem = "Ee Mungu Nguvu Yetu"() , image_map = , map_caption = , image_map2 = , capital = Nairobi , coordinates = , largest_city = Nairobi , ...
867 km,
Somalia Somalia, , Osmanya script: 𐒈𐒝𐒑𐒛𐒐𐒘𐒕𐒖; ar, الصومال, aṣ-Ṣūmāl officially the Federal Republic of SomaliaThe ''Federal Republic of Somalia'' is the country's name per Article 1 of thProvisional Constituti ...
1,640 km,
South Sudan South Sudan (; din, Paguot Thudän), officially the Republic of South Sudan ( din, Paankɔc Cuëny Thudän), is a landlocked country in East Africa. It is bordered by Ethiopia, Sudan, Central African Republic, Democratic Republic of the C ...
1,299 km and
Sudan Sudan ( or ; ar, السودان, as-Sūdān, officially the Republic of the Sudan ( ar, جمهورية السودان, link=no, Jumhūriyyat as-Sūdān), is a country in Northeast Africa. It shares borders with the Central African Republic t ...
744 km ; Coastline: : 0 km (landlocked): ; Climate: : Tropical monsoon with wide topographic-induced variation ; Terrain: : High plateau with central mountain range divided by Great Rift Valley ; Elevation extremes: :* Lowest point:
Danakil Danakil may refer to: * Danakil people or Afar people, an ethnic group in the Horn of Africa *Danakil Depression, a desert basin in north-eastern Ethiopia and southern Eritrea *Danakil Desert, a desert in the Horn of Africa *Danakil Depression or A ...
, −125 m :* Highest point:
Ras Dashen Ras Dashen (Amharic: ራስ ዳሸን ''rās dāshn''), also known as Ras Dejen, is the highest mountain in Ethiopia and fourteenth highest peak in Africa. Located in the Simien Mountains National Park in the North Gondar Zone of the Amhara Regi ...
, 4,533 m ; Natural resources: : Small reserves of gold,
platinum Platinum is a chemical element with the symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish , a diminutive of "silver". Platinu ...
, copper,
potash Potash () includes various mined and manufactured salts that contain potassium in water-soluble form.
, natural gas, hydropower ; Land use: :* Arable land: 15.35% :* Permanent crops: 1.14% :* Other: 83.51% (2012 est.) ; Irrigated land: : 2,896 km² (2003) ; Total renewable water resources: : 122 km3 (2011) ; Freshwater withdrawal (domestic/industrial/agricultural): :* total: 5.56 km3/yr (13%/1%/86%) :* per capita: 80.5 m3/yr (2005) ; Natural hazards: : Geologically active
Great Rift Valley The Great Rift Valley is a series of contiguous geographic trenches, approximately in total length, that runs from Lebanon in Asia to Mozambique in Southeast Africa. While the name continues in some usages, it is rarely used in geology as it ...
susceptible to earthquakes, volcanic eruptions; frequent droughts ; Environment – current issues: : Deforestation; overgrazing; soil erosion; desertification; water shortages in some areas from water-intensive farming and poor management ; Environment – international agreements: :* Party to:
Biodiversity Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') l ...
,
Climate Change In common usage, climate change describes global warming—the ongoing increase in global average temperature—and its effects on Earth's climate system. Climate change in a broader sense also includes previous long-term changes to E ...
,
Desertification Desertification is a type of land degradation in drylands in which biological productivity is lost due to natural processes or induced by human activities whereby fertile areas become increasingly arid. It is the spread of arid areas caused by ...
,
Endangered Species An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and inv ...
, Hazardous Wastes,
Ozone Layer Protection The Montreal Protocol is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion. It was agreed on 16 September 1987, and entered into force o ...
:* Signed, but not ratified:
Environmental Modification The Environmental Modification Convention (ENMOD), formally the Convention on the Prohibition of Military or Any Other Hostile Use of Environmental Modification Techniques is an international treaty prohibiting the military or other hostile use ...
, Law of the Sea,
Nuclear Test Ban The Comprehensive Nuclear-Test-Ban Treaty (CTBT) is a multilateral treaty to ban nuclear weapons test explosions and any other nuclear explosions, for both civilian and military purposes, in all environments. It was adopted by the United Nations ...
; Geography – note: :
Landlocked A landlocked country is a country that does not have territory connected to an ocean or whose coastlines lie on endorheic basins. There are currently 44 landlocked countries and 4 landlocked de facto states. Kazakhstan is the world's largest ...
– entire coastline along the Red Sea was lost with the de jure independence of Eritrea on 24 May 1993


See also

*
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 ...
*
Extreme points of Ethiopia The extreme points of Ethiopia include the coordinates that are further north, south, east or west than any other location in Ethiopia; and the highest and the lowest elevations in the country. Latitude and longitude * Northernmost point: *: ...
*
History of Ethiopia Ethiopia is one of the oldest countries in Africa, the emergence of Ethiopian civilization dates back thousands of years. Due to migration and imperial expansion, it grew to include many other primarily Afro-Asiatic-speaking communities, includ ...
*
Index of Ethiopia-related articles Articles (arranged alphabetically) related to Ethiopia include: __NOTOC__ 0-9 * 1983–1985 famine in Ethiopia * 2007–2008 Ethiopian crackdown in Ogaden * 2015 Ethiopian general election * 2021 Ethiopian general election * 1960 in Ethiopi ...
*
List of lakes in Ethiopia This is a list of lakes of Ethiopia, located completely or partially within the country's borders. Lakes Lakes not confirmed with coordinates * Lake Chelelektu * Lake Gargori * Lake Laitali See also * Rift Valley lakes {{Ethiopia topics ...
*
List of mountains in Ethiopia The following notable mountains and mountain ranges are completely or partially within the borders of Ethiopia: __NOTOC__ A Mount Abba Yared • Abul Kasim (mountain) • Mount Abuna Yosef • Mount Abuye Meda • Amba Alagi • Ale Bagu • ...
*
List of 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 ...
*
List of volcanoes in Ethiopia This is a list of volcanoes in Ethiopia. It includes both active and extinct vents. See also * Geography of Ethiopia * Lists of volcanoes References {{Global Volcanism Program Volcanoes Ethiopia Ethiopia, , om, Itiyoophiyaa, so ...
*
Ilemi Triangle The Ilemi Triangle, sometimes called only Ilemi, is an area of disputed land in East Africa. Arbitrarily defined, it measures about . Named after Anuak chief Ilemi Akwon, the territory is claimed by South Sudan and Kenya. The territory also b ...
*
Mandera triangle The Mandera triangle is a geographical region in Eastern Africa where the countries of Ethiopia, Kenya and Somalia meet. The tri-border region is centered on the city of Mandera in Mandera County and corresponds with the Juba and Shabelle river ba ...


References

* *


External links


Maps of Ethiopia
– Perry–Castañeda Library Map Collection,
University of Texas at Austin The University of Texas at Austin (UT Austin, UT, or Texas) is a public research university in Austin, Texas. It was founded in 1883 and is the oldest institution in the University of Texas System. With 40,916 undergraduate students, 11,075 ...

The soil maps of Ethiopia
EuDASM
Ethiopia
''
The World Factbook ''The World Factbook'', also known as the ''CIA World Factbook'', is a reference resource produced by the Central Intelligence Agency (CIA) with almanac-style information about the countries of the world. The official print version is available ...
''.
Central Intelligence Agency The Central Intelligence Agency (CIA ), known informally as the Agency and historically as the Company, is a civilian foreign intelligence service of the federal government of the United States, officially tasked with gathering, processing, ...
.
The mapping of Ethiopia
Ethiopia-United States Mapping Mission web site
ETHIOPIA TOPOGRAPHIC MAPS
East View Cartographic web site
Ethiopia's government mapping agency
Ethiopian Mapping Authority The Ethiopian Mapping Agency (EMA) is an Ethiopian government agency, a department within the Ministry of Finance and Cooperation, that is responsible for cartographic mapping and remote sensing activities in Ethiopia. The EMA has expanded its ...
web site {{DEFAULTSORT:Geography of Ethiopia