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A view through a coulee in Alberta, with steep but lower sides, and water in the bottom. Coulee, or coulée (/ ˈ k uː l eɪ / or / ˈ k uː l iː /), [1] is any of various different landforms, all of which are kinds of valleys or drainage zones. The word coulee comes from the Canadian French coulée, from French couler 'to flow'.
Butte – Isolated hill with steep, often vertical sides and a small, relatively flat top; Canyon – Deep chasm between cliffs; Cliff – Tall, near vertical rock face; Col – Lowest point on a mountain ridge between two peaks; Cuesta – Hill or ridge with a gentle slope on one side and a steep slope on the other
In geology, a trough is a linear structural depression that extends laterally over a distance. Although it is less steep than a trench , a trough can be a narrow basin or a geologic rift . These features often form at the rim of tectonic plates .
Verdi Lake in the Ruby Mountains of Nevada. The word is derived from the Old Norse word tjörn ("a small mountain lake without tributaries") meaning pond. In parts of Northern England – predominantly Cumberland and Westmorland (where there are 197), [2] but also areas of North Lancashire and North Yorkshire – 'tarn' is widely used as the name for small lakes or ponds, regardless of their ...
A tunnel or conduit that channels water through or beneath an obstacle (e.g. through a man-made crossing of a ravine that would otherwise block the natural flow of water), or any artificially buried watercourse. curvimeter See opisometer. cusp An arc-shaped, dune-like mound of sediment on a beach or foreshore. [14]
In geology a sag, or trough, is a depressed, persistent, low area; the opposite of an arch, or ridge, a raised, persistent, high area.The terms sag and arch were used historically to describe very large features, for example, characterizing North America as two arches with a sag between them.
(Hill Hill Hill) – "Pen" -(Cumbric language) "Pendle" by epenthesis and elision from "Pen Hyll", the latter word being Old English for "hill". [3] Pendleton, near Pendle Hill, Lancashire, England. (Hill Hill Town) or, possibly (Hill Hill Hill), taking the -ton as deriving from Old English dun as opposed to Old English tun.
The river is best known for the Tahquamenon Falls, a succession of two waterfalls in Tahquamenon Falls State Park totalling approximately 73 feet (22 m) in height. Because the headwaters of the river are located in a boreal wetland that is rich in cedar, spruce and hemlock trees, the river's waters carry a significant amount of tannin in solution (i.e., it is a blackwater river), and are often ...