Lake Geneva

Lake Geneva (French: lac Léman, le Léman[lemɑ̃], sometimes lac de Genève [lak d(ə) ʒ(ə)nɛːv], German: Genfersee [ˈɡɛnfərˌzeː]) is a lake on the north side of the Alps, shared between Switzerland and France. It is one of the largest lakes in Western Europe and the largest on the course of the Rhône. 59.53% (345.31 km² [133.32 sq mi]) of it comes under the jurisdiction of Switzerland (cantons of Vaud, Geneva, and Valais), and 40.47% (234.71 km² [90.62 sq mi]) under France (department of Haute-Savoie).

Lake Geneva has been explored by four submarines: the Auguste Piccard and the F.-A. Forel, both built by Jacques Piccard, and the two Mir submersibles.

Name

The first recorded name of the lake is Lacus Lemannus, dated from Roman times; Lemannus comes from Ancient greek Limanos, Limènos Limne Λιμένος Λίμνη meaning port's lake; it became Lacus Lausonius, although this name was also used for a town or district on the lake, Lacus Losanetes and then the Lac de Lausanne in the Middle Ages. Following the rise of Geneva it became Lac de Genève (translated into English as Lake Geneva). In the 18th century, Lac Léman was revived in French and is the customary name in that language. In contemporary English, the name Lake Geneva is predominant. A note on pronunciation:

Geneva

Geneva (/dʒᵻˈniːvə/, French: Genève [ʒə.nɛv], Arpitan: Genèva [dzəˈnɛva], German: Genf [ɡɛnf], Italian: Ginevra [dʒiˈneːvra], Romansh: Genevra) is the second most populous city in Switzerland (after Zürich) and is the most populous city of Romandy, the French-speaking part of Switzerland. Situated where the Rhône exits Lake Geneva, it is the capital of the Republic and Canton of Geneva.

The municipality (ville de Genève) has a population (as of December 2014) of 197,376, and the canton (which is essentially the city and its inner-ring suburbs) has 482,545 residents. In 2011, the compact agglomération franco-valdo-genevoise (Greater Geneva or Grand Genève) had 915,000 inhabitants in both – Switzerland and France (< 30mins distance). Within Swiss territory, the commuter area named "Métropole lémanique" contains a population of 1.25 million. This area is essentially spread east from Geneva towards the Riviera area (Vevey, Montreux) and north-east towards Yverdon-les-Bains, in the neighbouring canton of Vaud (< 60mins distance).

Lake

A lake is an area of variable size filled with water, localized in a basin, that is surrounded by land, apart 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 (except for sea lochs in Scotland and Ireland), and therefore are distinct from lagoons, and are also larger and deeper than ponds, though there are no official or scientific definitions. Lakes can be contrasted with rivers or streams, which are usually flowing. However most lakes are fed and drained by rivers and streams.

Natural lakes are generally found in mountainous areas, rift zones, and areas with ongoing glaciation. Other lakes are found in endorheic basins or along the courses of mature rivers. In some parts of the world there are many lakes because of chaotic drainage patterns left over from the last Ice Age. All lakes are temporary over geologic time scales, as they will slowly fill in with sediments or spill out of the basin containing them.

Many lakes are artificial and are constructed for industrial or agricultural use, for hydro-electric power generation or domestic water supply, or for aesthetic or recreational purposes.

Region

In geography, regions are areas broadly divided by physical characteristics (physical geography), human impact characteristics (human geography), and the interaction of humanity and the environment (environmental geography). Geographic regions and sub-regions are mostly described by their imprecisely defined, and sometimes transitory boundaries, except in human geography, where jurisdiction areas such as national borders are clearly defined in law.

Apart from the global continental regions, there are also hydrospheric and atmospheric regions that cover the oceans, and discrete climates above the land and water masses of the planet. The land and water global regions are divided into subregions geographically bounded by large geological features that influence large-scale ecologies, such as plains and features.

As a way of describing spatial areas, the concept of regions is important and widely used among the many branches of geography, each of which can describe areas in regional terms. For example, ecoregion is a term used in environmental geography, cultural region in cultural geography, bioregion in biogeography, and so on. The field of geography that studies regions themselves is called regional geography.