Gamtoos River or Gamptoos River is a river in the

Eastern Cape Province The Eastern Cape is one of the provinces of South Africa. Its capital is Bhisho, but its two largest cities are East London and Gqeberha. The second largest province in the country (at 168,966 km2) after Northern Cape, it was formed in 199 ...

South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. It is bounded to the south by of coastline that stretch along the Atlantic Ocean, South Atlantic and Indian Oceans; to the ...

. It is formed by the confluence of the Kouga River and the Groot River and is approximately long with a catchment area of .

Course

The Gamtoos river system is formed by the Groot, the Kouga and the Baviaanskloof rivers. The latter is a tributary of the Kouga. Although the rainfall in the catchment area is low, it supports a commercial irrigated agriculture in the lower catchment in which oranges,

tobacco Tobacco is the common name of several plants in the genus '' Nicotiana'' of the family Solanaceae, and the general term for any product prepared from the cured leaves of these plants. More than 70 species of tobacco are known, but the ...

citrus ''Citrus'' is a genus of flowering trees and shrubs in the rue family, Rutaceae. Plants in the genus produce citrus fruits, including important crops such as oranges, lemons, grapefruits, pomelos, and limes. The genus ''Citrus'' is native to ...

fruit In botany, a fruit is the seed-bearing structure in flowering plants that is formed from the ovary after flowering. Fruits are the means by which flowering plants (also known as angiosperms) disseminate their seeds. Edible fruits in particu ...

and

vegetable Vegetables are parts of plants that are consumed by humans or other animals as food. The original meaning is still commonly used and is applied to plants collectively to refer to all edible plant matter, including the flowers, fruits, stems, ...

s are grown. There is an

estuary An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environm ...

where the Gamtoos river enters the

Indian Ocean The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by t ...

. It is located between

Jeffreys Bay Jeffreys Bay ( af, Jeffreysbaai, nicknamed J-bay) is a town of 27,107 inhabitants as of the 2011 census in the Eastern Cape province of South Africa. It Is the seat of the Kouga municipality and is famous amongst surfers as a surf capital due ...

and Port Elizabeth and the Gamtoos River Mouth Nature Reserve is in the area. The towns of Hankey, the oldest town situated in the Gamtoos river valley, and Patensie are situated in the lower catchment. Further inland are the towns of Steytlerville, Joubertina, Uniondale,

Willowmore Willowmore is a town in Sarah Baartman District Municipality in the Eastern Cape province of South Africa. The town is situated 140 km north-east of Knysna and 117 km south-west of Aberdeen Aberdeen (; sco, Aiberdeen ; gd, Obar ...

and

Murraysburg Murraysburg is an Afrikaans speaking town of approximately 5,000 people in the Western Cape province of South Africa. It is situated in the far northeast of the municipality, about from the provincial capital Cape Town, and west of Graaff-Reinet. ...

. Tributaries include the

Loerie River The turacos make up the bird family Musophagidae ( "banana-eaters"), which includes plantain-eaters and go-away-birds. In southern Africa both turacos and go-away-birds are commonly known as loeries. They are semi-zygodactylous: the fourth ( ...

, Klein River,

Hol River Hol is a municipality in Viken county, Norway. Administrative history The area of Hol was separated from the municipality Ål in 1877 to become a separate municipality. In 1937 a part of neighboring Uvdal with 220 inhabitants moved to Hol munici ...

, besides the Groot and the Kouga that form the Gamtoos.

History

Saartjie Baartman Sarah Baartman (; 1789– 29 December 1815), also spelt Sara, sometimes in the diminutive form Saartje (), or Saartjie, and Bartman, Bartmann, was a Khoikhoi woman who was exhibited as a freak show attraction in 19th-century Europe under the n ...

- the "Hottentot Venus" - was born around 1789 in the vicinity of the Gamtoos river. In 1877 during a severe

drought A drought is defined as drier than normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D. Jiang, A. Khan, W. Pokam Mba, D. Rosenfeld, J. Tierney, an ...

in the region, the Gamtoos River dried up completely. During the floods of October 1867, according to

John Croumbie Brown John Croumbie Brown (16 May 1808 Haddington, Scotland - 17 September 1895 Haddington) was a prolific author, minister of religion, forestry pioneer in South Africa as well as soil conservationist and hydrologist. He was the grandson of John Bro ...

, the level of water in some parts of the river rose by up to . Two bridges cross the Gamtoos close to its mouth in the Kouga. The original bridge on the

R102 The R.102 (originally referred to as Project H) was a British airship planned in 1930 but never built. The development of R.102 resulted from the Imperial Airship Scheme, when it became apparent that the R100 and R101 airships then being buil ...

was opened in 1895 in order to replace the ferry that had been in use up to that time. A modern concrete bridge was built during the construction of the N2 in the early 1970s.

Dams in the basin

Presently this river is part of the Fish to Tsitsikama Water Management Area. * Kouga Dam in the Kouga River

Ecology

In 1995 specimens of the

Cape galaxias The Cape galaxias (''Galaxias zebratus'') is a species of freshwater fish of the family Galaxiidae. It is a small fish, rarely larger than 6 cm, that inhabits clear streams, rivers and ponds of South Africa. It shares the same habitat as i ...

(''Galaxias zebratus''), a South African fish species

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

to the Cape Floristic Region, were found in the Krom River and subsequently they were also found in the Gamtoos River system. Until then it had been thought that its distribution was restricted to the area between the Keurbooms and the Olifants River. Although in South Africa this relatively delicate fish is only classified as

near threatened A near-threatened species is a species which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature as that may be vulnerable to endangerment in the near future, but it does not currently qualify f ...

, in Australia species of the same genus were driven to

extinction Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

by competing salmonids and other

introduced species An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived ther ...

of fish."Biodiversity, Alien trout, and the So what attitude"
/ref>

References

External links