Limpopo River

The Limpopo River rises in South Africa and flows generally eastward through Mozambique to the Indian Ocean. The term Limpopo is derived from Rivombo (Livombo/Lebombo), a group of Tsonga settlers led by Hosi Rivombo who settled in the mountainous vicinity and named the area after their leader. The river is approximately 1,750 kilometres (1,087 mi) long, with a drainage basin 415,000 square kilometres (160,200 sq mi) in size. The

Limnology

Limnology (/lɪmˈnɒlədʒi/ lim-NOL-ə-jee; from Greek λίμνη, limne, “lake” and λόγος, logos, “knowledge”) is the study of inland aquatic ecosystems. The study of limnology includes aspects of the biological, chemical, physical, and geological characteristics of fresh and saline, natural and man-made bodies of water. This includes the study of lakes, reservoirs, ponds, rivers, springs, streams, wetlands, and groundwater. Water systems are often categorized as either running (lotic) or standing (lentic). Limnology includes the study of the

Law of the wall

In fluid dynamics, the law of the wall (also known as the logarithmic law of the wall) states that the average velocity of a turbulent flow at a certain point is proportional to the logarithm of the distance from that point to the “wall”, or the boundary of the fluid region. This law of the wall was first published in 1930 by Hungarian-American mathematician, aerospace

Lakes of Titan

Lakes of ethane and methane on Titan, Saturn’s largest moon, have been detected by the Cassini–Huygens space probe, and had been suspected long before. The large ones are known as maria (seas) and the small ones as lacūs (lakes). Contents   1History 1.1Chemical composition and surface roughness of the lakes 1.2Observation of specular reflections 1.3Equatorial in-situ observations by the Huygens probe 1.4Impact of Titan’s methane cycle and geology

Lake

A lake is an area filled with water, localized in a basin, surrounded by land, and distinct from any river or other outlet that serves to feed or drain the lake. Lakes lie on land and are not part of the ocean, although, like the much larger oceans, they do form part of the Earth’s water cycle. Lakes are distinct from lagoons, which are generally

Labrador

Labrador (/ˈlæbrədɔːr/ LAB-rə-dor) is a geographic and cultural region within the Canadian province of Newfoundland and Labrador. It is the primarily continental portion of the province and constitutes 71% of the province’s area but is home to only 6% of its population. It is separated from the island of Newfoundland by the Strait of Belle Isle. It is the largest and

Keynsham

Keynsham (/ˈkeɪnʃəm/ KAYN-shəm) is a town and civil parish located between Bristol and Bath in Somerset, England. It has a population of 16,000. It was listed in the Domesday Book as Cainesham (as it is pronounced), which is believed to mean the home of Saint Keyne. The site of the town has been occupied since prehistoric times, and may have been the site of the Roman settlement of Trajectus. The remains of

Jasper National Park

Jasper National Park is a national park in Alberta, Canada. It is the largest national park within Alberta’s Rocky Mountains spanning 11,000 km2 (4,200 sq mi). It was established as a national park in 1930 and declared a UNESCO World Heritage Site in 1984. Its location is north of Banff National Park and west of Edmonton. The park contains the glaciers of the Columbia Icefield, springs, lakes, waterfalls and mountains. Contents   1History 1.1First Nations 1.2Fur trade

International scale of river difficulty

The international scale of river difficulty is an American system used to rate the difficulty of navigating a stretch of river, or a single (sometimes whitewater) rapid. The scale was created by the American Whitewater Association to evaluate rivers throughout the world, hence international in the title. It should not be confused with the internationally used whitewater scale, which is published and adapted by a

Intermittent river

Intermittent, temporary or seasonal rivers or streams cease to flow every year or at least twice every five years. Such rivers drain large arid and semi-arid areas, covering approximately a third of the earth’s surface. The extent of temporary rivers is increasing, as many formerly perennial rivers are becoming temporary because of increasing water demand, particularly for irrigation. Despite inconsistent water flow, intermittent rivers are considered land-forming agents in arid regions, as they