Van Stadens River
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Van Stadens River is a river in the
Eastern Cape 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 ...
province of
South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ...
. The river mouth is located about 30 km west of
Port Elizabeth Gqeberha (), formerly Port Elizabeth and colloquially often referred to as P.E., is a major seaport and the most populous city in the Eastern Cape province of South Africa. It is the seat of the Nelson Mandela Bay Metropolitan Municipality, Sou ...
. The river was named after Marthinus van Staden, one of the area’s pioneering farmers. He was also among the first to plot a rudimentary track through the valley.Van Stadens Pass (R102). Mountain Passes South Africa. Accessed 24 July 2017.
/ref> The geology of the Van Stadens catchments is primarily derived from rock of the mid-Palaeozoic Era that formed the Table Mountain Group of the Cape Supergroup.Gama, PT, Adams, JB, Schael, DM and Skinner T. 2005. Phytoplankton Chlorophyll: A concentration and community structure of two temporarily open/closed estuaries. Department of Botany, Nelson Mandela Metropolitan University. Accessed 26 July 2017.
/ref> The upper to middle catchment areas are characterised by high gradients indicative of steep gorges. Along the river, nutrient concentrations are naturally low. This is a result of the steep topography that prevents human activity like farming which would disturb the natural processes. The
Van Stadens Wild Flower Reserve The Van Stadens River Wild Flower Reserve ( af, Van Stadens-veldblomreservaat) near Port Elizabeth, Eastern Cape, South Africa, is one of the oldest nature reserves in the country. Location The park covers 600 hectares and lies 40 km west o ...
situated upstream and this nature conservancy has kept the level of nutrient input low. The Van Stadens River estuary is 0.52 km2 when the river mouth is closed and the water level is at maximum height. The
Van Stadens Bridge The Van Stadens Bridge is a concrete arch bridge over the Van Stadens River in the Eastern Cape of South Africa. It carries road traffic for the N2 national highway. Suicides at Van Stadens Bridge The Van Stadens Bridge on the N2 was opened o ...
where the N2 national highway crosses the river is known as a suicide location. Just upstream of the N2 bridge, the 60 cm (2 ft)
gauge Gauge ( or ) may refer to: Measurement * Gauge (instrument), any of a variety of measuring instruments * Gauge (firearms) * Wire gauge, a measure of the size of a wire ** American wire gauge, a common measure of nonferrous wire diameter, es ...
Avontuur Railway The Avontuur Railway is a closed railway line between Port Elizabeth and the town of Avontuur in the Western and Eastern Cape provinces of South Africa. It is the longest narrow gauge route in the world at a length of . "Avontuur" is the Afrika ...
crosses the Van Stadens River over a 78 m (255 ft) high bridge.


Van Stadens Bridge

The construction of the bridge was completed on 11 November 1971. The
deck arch bridge An arch bridge is a bridge with abutments at each end shaped as a curved arch. Arch bridges work by transferring the weight of the bridge and its loads partially into a horizontal thrust restrained by the abutments at either side. A viaduct ( ...
stands at 140 m above the valley floor,Van_Stadens_Bridge
._Structurae._Accessed_24_July_2017..html" ;"title="Van Stadens Bridge">
Van_Stadens_Bridge">Van_Stadens_Bridge
._Structurae._Accessed_24_July_2017./ref>_contains_1112_m3_of_concrete_and_574_tons_of_steel.


_Flora_and_Fauna

The_river’s_Drainage_basin.html" "title="Van Stadens Bridge
. Structurae. Accessed 24 July 2017.">Van Stadens Bridge">Van Stadens Bridge
. Structurae. Accessed 24 July 2017./ref> contains 1112 m3 of concrete and 574 tons of steel.


Flora and Fauna

The river’s Drainage basin">catchment area In human geography, a catchment area is the area from which a location, such as a city, service or institution, attracts a population that uses its services and economic opportunities. Catchment areas may be defined based on from where people are ...
is lush, making it ideal for many species of plants throughout the year. With two [biomes] adjacent to each other, fynbos and forest, the area is diverse in unique plant and animal life.Van Stadens Wild Flower Reserve. Port Elizabeth Metro Bed and Breakfast Association (PEMBBA). Accessed 24 July 2013.
/ref> The area’s fynbos supports populations of
protea ''Protea'' () is a genus of South African flowering plants, also called sugarbushes (Afrikaans: ''suikerbos''). Etymology The genus ''Protea'' was named in 1735 by Carl Linnaeus, possibly after the Greek god Proteus, who could change his form a ...
s,
erica Erica or ERICA may refer to: * Erica (given name) * ''Erica'' (plant), a flowering plant genus * Erica (chatbot), a service of Bank of America * ''Erica'' (video game), a 2019 FMV video game * ''Erica'' (spider), a jumping spider genus * Eric ...
s and
orchidaceae Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Along with the Asteraceae, they are one of the two largest families of flowering ...
. Endemic to the area, aster laevigatus was first discovered in 1902 and then re-discovered after a mountain fire almost a century later. The Van Stadens River gorge is home to the largest population in the world of sterculia alexandri (known as the Cape star chestnut). Adjacent to the N2 national road to Cape Town and 25 km west of Port Elizabeth is the Van Stadens Wild Flower Reserve. The reserve was established in 1951, making it the oldest in the
South Africa South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countri ...
to provide a sanctuary for indigenous
flora Flora is all the plant life present in a particular region or time, generally the naturally occurring (indigenous) native plants. Sometimes bacteria and fungi are also referred to as flora, as in the terms '' gut flora'' or '' skin flora''. E ...
and
fauna Fauna is all of the animal life present in a particular region or time. The corresponding term for plants is ''flora'', and for fungi, it is '' funga''. Flora, fauna, funga and other forms of life are collectively referred to as '' biota''. Zoo ...
. Van Stadens River catchment area is also home to the endangered
Smith's dwarf chameleon Smith's dwarf chameleon or the Elandsberg dwarf chameleon (''Bradypodion taeniabronchum'') is a species of lizard in the family Chamaeleonidae endemic to South Africa South Africa, officially the Republic of South Africa (RSA), is the ...
and
Hewitt's ghost frog The Hewitt's ghost frog (''Heleophryne hewitti'') is a species of frog in the family Heleophrynidae. It is endemic to Eastern Cape Province, South Africa. Its natural habitat is fynbos heathland and grassy fynbos. Adults are difficult to see but ...
.


See also

*
List of longest arch bridge spans This list of the longest arch bridge spans ranks the world's arch bridges by the length of their main span. The length of the main span is the most common way to rank bridges as it usually correlates with the engineering complexity involved in des ...
*
List of rivers of South Africa This is a list of rivers in South Africa. It is quite common to find the Afrikaans word ''-rivier'' as part of the name. Another common suffix is "''-kamma''", from the Khoisan term for "river" Meiring, Barbara"South African Toponymic Guideline ...
* Van Stadensriviermond


References

{{Authority control Rivers of the Eastern Cape