The Orange River is a river in Southern Africa. It is the longest river in South Africa. With a total length of 2,432 km (1,511 mi), the Orange River Basin extends from Lesotho into South Africa and Namibia to the north. It rises in the Drakensberg mountains in Lesotho, flowing westwards through South Africa to the Atlantic Ocean. The river forms part of the international borders between South Africa and Lesotho and between South Africa and Namibia, as well as several provincial borders within South Africa. Except for Upington, it does not pass through any major cities. The Orange River plays an important role in the South African economy by providing water for irrigation and hydroelectric power. The river was named the Orange River in honour of the Dutch ruling family, the House of Orange, by the Dutch explorer Robert Jacob Gordon. Other names include simply the word for river, in Khoekhoegowab orthography written as !Garib, which is rendered in Afrikaans as Gariep River with the intrusion of a velar fricative in place of the alveolar click, Groote River or Senqu River, derived from ǂNū "Black". It is known in isiZulu as isAngqu.
The Vaal Dam in South Africa was constructed in 1938 and lies 77 km south of OR Tambo International Airport, Johannesburg. The lake behind the dam wall has a surface area of about 320 square kilometres (120 sq mi) and is 47 meters deep. The Vaal Dam lies on the Vaal River, which is one of South Africa's strongest-flowing rivers. Other rivers flowing into the dam are the Wilge River, Klip River, Molspruit and Grootspruit. It has over 800 kilometres (500 mi) of shoreline and is South Africa's second biggest dam by area and the fourth largest by volume.
Lake Vyrnwy is a reservoir in Powys, Wales, built in the 1880s for Liverpool Corporation Waterworks to supply Liverpool with fresh water. It flooded the head of the Vyrnwy valley and submerged the village of Llanwddyn.
The key town of Hoopstad is situated at the intersection of the R34, R59 & R700 in the Free State Province. This area is considered to be the richest maize-producing district in South Africa. The town is located near the Bloemhof Dam which is situated on the Vaal River. The Sandveld Nature Reserve is positioned alongside the Bloemhof Dam. Hopetown and Hoopstad are two different towns and are often confused.
Bloemhof is an agricultural town of about 2,000 inhabitants situated on the banks of the Vaal River in North West Province of South Africa.
The Highveld is the portion of the South African inland plateau which has an altitude above roughly 1500 m, but below 2100 m, thus excluding the Lesotho mountain regions to the south-east of the Highveld. It is home to some of the country's most important commercial farming areas, as well as its largest concentration of metropolitan centres, especially the Gauteng conurbation, which accommodates one-third of South Africa's population.
Lake Margaret is a concrete-faced gravity dam with an uncontrolled spillway across the Yolande River, located on the north side of Mount Sedgwick, in the West Coast Range, West Coast of Tasmania, Australia.
Periyar, IPA: [peɾijɐːr], is the longest river and the river with the largest discharge potential in the Indian state of Kerala. It is one of the few perennial rivers in the region and provides drinking water for several major towns. The Periyar is of utmost significance to the economy of Kerala. It generates a significant proportion of Kerala's electrical power via the Idukki Dam and flows along a region of industrial and commercial activity. The river also provides water for irrigation and domestic use throughout its course besides supporting a rich fishery. Due to these reasons, the river has been named the "Lifeline of Kerala". Kochi city, in the vicinity of the river mouth draws its water supply from Aluva, an upstream site sufficiently free of seawater intrusion. Twenty five percent of Kerala's industries are along the banks of river Periyar. These are mostly crowded within a stretch of 5 kilometres (3 mi) in the Eloor-Edayar region (Udhyogamandal), about 10 kilometres (6 mi) north of Kochi harbor.
Mont-aux-Sources is a mountain in Southern Africa, forming one of the highest portions of the Drakensberg Range. It is mostly within Lesotho, with parts in the KwaZulu-Natal and Free State provinces of South Africa.
The Harts River is a northern tributary of the Vaal River, which in turn is the largest tributary of the Orange River. Its source is in the North West Province, but the greater part of its basin is located in the Northern Cape Province, which it enters a few kilometers downstream from the Taung Dam.
The Gariep Dam is located in South Africa, near the town of Norvalspont, bordering the Free State and Eastern Cape provinces. Its primary purpose is for irrigation, domestic and industrial use as well as for power generation.
Pindari Dam is a minor concrete faced rockfill embankment dam with an ungated uncontrolled rock cut with concrete sill spillway across the Severn River located upstream of the town of Ashford, in the North West Slopes region of New South Wales, Australia. The dam's purpose includes flood mitigation, hydro-power, irrigation, water supply and conservation. The impounded reservoir is called Lake Pindari.
The Sterkfontein Dam, located just outside the town of Harrismith, in the Free State, province of South Africa, is part of the Tugela-Vaal Water Project and the Drakensberg Pumped Storage Scheme, and located on the Nuwejaarspruit, a tributary of the Wilge River in the upper catchment area of the Vaal River. It is the second highest dam wall in South Africa and its highest earth fill dam.
The Kilburn Dam, an earth-fill type dam and part of the Tugela-Vaal Water Project and Drakensberg Pumped Storage Scheme, is located 500 metres (1,600 ft) lower than the Sterkfontein Dam, on the Mnjaneni River, near Bergville, KwaZulu-Natal, province of South Africa. The dam was commissioned in 1981, has a capacity of 36,700 cubic metres (1,300,000 cu ft), and a surface area of 207 hectares, the dam wall is 48 metres (157 ft) high. The main purpose of the dam assembly is to serve for the generation of hydro-electricity and its hazard potential has been ranked high (3).
Oviston Nature Reserve is a protected area in the Eastern Cape Province, South Africa. The nature reserve is managed by Eastern Cape Parks. It is located on the southern shores of the Gariep Dam.
Sandveld Nature Reserve is a protected area, located on the border between the Free State and North West provinces.
The Sand River is a river in the Free State, South Africa. It is located close to Welkom and Virginia in the gold mining center of the Free State. Its source is located close to Tweefontein NW of Ficksburg not far from the South Africa-Lesotho border, at 28°40′49″S27°41′23″E. This river is famous because of the historical Sand River Convention signed nearby, an important event in South African political history.
The Vaal River Barrage Reservoir is a dam on the Vaal River near Vanderbijlpark, border Gauteng and Free State, South Africa.
The Vet River is a westward-flowing tributary of the Vaal River in central South Africa. Its sources are between Marquard and Clocolan and the Vet River flows roughly northwestwards to meet the Vaal at the Bloemhof Dam near Hoopstad.
The Angat Watershed Forest Reserve is a conservation area that protects the drainage basin in the southern Sierra Madre range north of Metro Manila in the Philippines where surface water empties into the Angat River and its distributaries. It is spread over an area of 62,309 hectares in the eastern portion of Bulacan and northern Rizal province at an altitude of between 490 and 1,206 metres. The conservation area also extends to the provinces of Nueva Ecija and Quezon and is centered on an artificial lake created by the Angat Dam which, together with the Ipo Dam located 7.5 kilometres (4.7 mi) downstream, supply 97% of the water requirement of Metro Manila via an aqueduct system to the La Mesa Dam and Reservoir and the Balara Filtration Plant in Quezon City. The Angat Dam and Reservoir is also a major source of hydroelectricity for Metro Manila and surrounding provinces, contributing some 200 megawatts to the Luzon grid. The watershed is a popular birdwatching site and is a biodiversity hotspot containing most of the remaining closed-canopy forests in Central Luzon.
