Turkwel River Outside Lodwar Town in Turkana County Kenya

The Turkwel River (sometimes spelled Turkwell River) is a river flowing from

Mount Elgon Mount Elgon is an extinct shield volcano on the border of Uganda and Kenya, north of Kisumu and west of Kitale. The mountain's highest point, named "Wagagai", is located entirely within Uganda.

on the border of

Kenya Kenya, officially the Republic of Kenya, is a country located in East Africa. With an estimated population of more than 52.4 million as of mid-2024, Kenya is the 27th-most-populous country in the world and the 7th most populous in Africa. ...

and

Uganda Uganda, officially the Republic of Uganda, is a landlocked country in East Africa. It is bordered to the east by Kenya, to the north by South Sudan, to the west by the Democratic Republic of the Congo, to the south-west by Rwanda, and to the ...

Lake Turkana Lake Turkana () is a saline 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. By volume it is the world ...

. The river is called the Suam River from its source to the border at

Turkana County Turkana County is a county in the former Rift Valley Province of Kenya. It is home to the Turkana people. It is Kenya's largest county by land area of 77,597.8 km2 followed by Marsabit County with an area of 66,923.1 km2. It is bord ...

of Kenya. The name Turkwel is derived from the Turkana name for the river, ''Tir-kol'', which means a river that "withstands the wilderness". The Turkwel begins on the lush green slopes of

and the

Cherangani Hills The Cherang'any Hills are a range of hills in the western highlands of Kenya. The hills are one of Kenya's five main forests and catchment areas. The highlands, the large central plateau, is divided by the Mau Escarpment which rises from the bord ...

, then traverses the Southern Turkana Plains, crosses the Loturerei Desert near

Lodwar Lodwar is the largest town in north-western Kenya, located west of Lake Turkana on the A1 road. Its main industries are basket weaving and tourism. The Loima Hills lie to its west. Lodwar is the capital of Turkana County. The town had a popu ...

and empties into the world's largest desert lake,

. The river's flow is seasonally varied, and flash floods in the rainy season also occur at times. The controversial Turkwel Dam was built by the Kenyan government from 1986 to 1991 with the help of

France France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlan ...

. The plan was to harness the waters of the Turkwel. The project was initially supposed to cost KSh. 4 billion, but ended up costing more than KSh. 20 billion. The dam partially filled the Turkwel Gorge and created the Turkwel Gorge Reservoir.

Anthropology

In 1999, fossils reported from south of the river were assigned to ''

Australopithecus ''Australopithecus'' (, ; or (, ) is a genus of early hominins that existed in Africa during the Pliocene and Early Pleistocene. The genera ''Homo'' (which includes modern humans), ''Paranthropus'', and ''Kenyanthropus'' evolved from some ''Aus ...

'' sp. based on similarities with ''

A. afarensis ''Australopithecus afarensis'' is an extinct species of australopithecine which lived from about 3.9–2.9 million years ago (mya) in the Pliocene of East Africa. The first fossils were discovered in the 1930s, but major fossil finds would not ta ...

'', although they were not the same. They were discovered by a multinational team in 1990 and brought to the National Museums of Kenya. These fossils include a

metacarpal In human anatomy, the metacarpal bones or metacarpus, also known as the "palm bones", are the appendicular bones that form the intermediate part of the hand between the phalanges (fingers) and the carpal bones ( wrist bones), which articulate ...

capitate The capitate bone is a bone in the human wrist found in the center of the carpal bone region, located at the distal end of the radius and ulna bones. It articulates with the third metacarpal bone (the middle finger) and forms the third carpomet ...

hamate The hamate bone (from Latin language, Latin wiktionary:hamatus, hamatus, "hooked"), or unciform bone (from Latin language, Latin ''wikt:uncus, uncus'', "hook"), Latin os hamatum and occasionally abbreviated as just hamatum, is a bone in the huma ...

lunate Lunate is a crescent or moon-shaped microlith. In the specialized terminology of lithic reduction, a lunate flake is a small, crescent-shaped lithic flake, flake removed from a stone tool during the process of pressure flaking. In the Natufian cu ...

pedal phalanx The phalanges (: phalanx ) are digital bones in the hands and feet of most vertebrates. In primates, the thumbs and big toes have two phalanges while the other digits have three phalanges. The phalanges are classed as long bones. Structure ...

mandibular In jawed vertebrates, the mandible (from the Latin ''mandibula'', 'for chewing'), lower jaw, or jawbone is a bone that makes up the lowerand typically more mobilecomponent of the mouth (the upper jaw being known as the maxilla). The jawbone i ...

fragment, and dental remains. They lacked the

suspension Suspension or suspended may refer to: Science and engineering * Car suspension * Cell suspension or suspension culture, in biology * Guarded suspension, a software design pattern in concurrent programming suspending a method call and the calling ...

and

climbing Climbing is the activity of using one's hands, feet, or other parts of the body to ascend a steep topographical object that can range from the world's tallest mountains (e.g. the eight thousanders) to small boulders. Climbing is done for locom ...

capabilities in the

hand A hand is a prehensile, multi-fingered appendage located at the end of the forearm or forelimb of primates such as humans, chimpanzees, monkeys, and lemurs. A few other vertebrates such as the Koala#Characteristics, koala (which has two thumb#O ...

and

wrist In human anatomy, the wrist is variously defined as (1) the carpus or carpal bones, the complex of eight bones forming the proximal skeletal segment of the hand; "The wrist contains eight bones, roughly aligned in two rows, known as the carpal ...

of contemporaries, but had heavily muscled forearms that were adept at certain

ape Apes (collectively Hominoidea ) are a superfamily of Old World simians native to sub-Saharan Africa and Southeast Asia (though they were more widespread in Africa, most of Asia, and Europe in prehistory, and counting humans are found global ...

like types of precision gripping based on the suggested rotary capacity. These were assigned KNM-WT 22944 G through J, and they are 3.5 mya old from the Nachukui Formation.

References

Rivers of Kenya Mount Elgon Tributaries of Lake Turkana West Pokot County Rivers of Uganda {{Kenya-river-stub