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The head of navigation is the farthest point above the mouth of a river that can be navigated by ships. [1] Determining the head of navigation can be subjective on many streams, as the point may vary greatly with the size or the draft of the ship being contemplated for navigation and the seasonal water level.
A large waterfall, or a long series of rapids in a river, of the type occurring in the river Nile. [4] catchment See drainage basin. causeway A track, road, or railway raised above a body of water or a low-lying place by virtue of being built upon a man-made embankment, typically constructed of earth, masonry, wood, or concrete. Compare bridge ...
Crossing the Red River near Granite, Oklahoma in 1921 Crossing the Milkhouse ford through Rock Creek in 1960 A ford next to a bridge that can only support 1.5 tonnes in Aufseß, Germany. A ford is a shallow place with good footing where a river or stream may be crossed by wading, on horseback, or inside a vehicle getting its wheels wet. [1]
Looming of the Canadian coast as seen from Rochester, New York, on April 16, 1871. Looming is the most noticeable and most often observed of these refraction phenomena. It is an abnormally large refraction of the object that increases the apparent elevation of the distant objects and sometimes allows an observer to see objects that are located below the horizon under normal conditions.
A low-water crossing (also known as an Irish bridge or Irish Crossing, causeway in Australia, low-level crossing or low-water bridge) is a low-elevation roadway traversing over a waterbody that stays dry above the water when the flow is low, but is designed to get submerged under high-flow conditions such as floods.
A reach is a segment of a stream, river, or arm of the sea, [citation needed] usually suggesting a straight, level, uninterrupted stretch. [1] [2] They are traditionally defined by the capabilities of sailing boats, as a stretch of a watercourse which, because it is straightish, can be sailed in one "reach" (that is, without tacking).
In Gordon (1925) the author describing a walk down Glen Avon in the Cairngorms mentions two Linns on the River Avon - first: A couple of miles below Faindouran Lodge the A'an is spanned by a bridge. Here the river is narrow, with foaming rapids and deep pools where salmon lie of a September day. Beside the Linn, on the damp granite ledges ...
A river is a natural flow of freshwater that flows on or through land towards another body of water downhill. [1] This flow can be into a lake, an ocean, or another river. [1] A stream refers to water that flows in a natural channel, a geographic feature that can contain flowing water. [2] A stream may also be referred to as a watercourse. [2]