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In East Asia, a nullah (Chinese: 明渠; pinyin: míngqú; Wade–Giles: ming 2-chʻü 2; Jyutping: ming 4 keoi 4; lit. 'open ditch') refers to an open, usually concrete-lined flood control channel designed to allow rapid drainage of stormwater or a sewerage channel for industrial wastewater from high ground, to prevent flooding or stagnation in urbanised coastal areas, [4] and basically is an ...
According to Merriam-Webster, a ravine is "a small, narrow, steep-sided valley that is larger than a gully and smaller than a canyon and that is usually worn by running water". [1] Some societies and languages do not differentiate between a gully and ravine; in others, there is a distinction, particularly when concerning environmental management.
The "Combe de Dreveneuse" in Valais, Switzerland. A combe (/ k uː m /; also spelled coombe or coomb and, in place names, comb) can refer either to a steep, narrow valley, or to a small valley or large hollow on the side of a hill; [1] [2] in any case, it is often understood simply to mean a small valley through which a watercourse does not run.
A word identifying a person or a group of people in relation to a particular place, usually derived from the name of the place (which may be any kind of place, formal or informal, of any size or scale, from a town or city to a region, province, country, or continent) and used to describe all residents or natives of that place, regardless of any ...
A steephead valley, steephead or blind valley is a deep, narrow, flat bottomed valley with an abrupt ending. Such closed valleys may arise in limestone or karst landscapes, where a layer of permeable rock lies above an impermeable substrate such as marl. Water flowing through a steephead valley leaves via one or more ponors [1] or sinkholes.
As a generic name for a type of valley, the term typically refers to a wide valley, though there are many much smaller stream valleys within the Yorkshire Dales which are named "(specific name) Dale". [17] Clough is a word in common use in northern England for a narrow valley with steep sides. [18]
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A gill or ghyll is a ravine or narrow valley in the North of England and parts of Scotland.The word originates from the Old Norse gil. [1] Examples include Dufton Ghyll Wood, Dungeon Ghyll, Troller's Gill and Trow Ghyll.