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Meander. A stream bed following a tilted valley. The maximum gradient is along the down-valley axis represented by a hypothetical straight coast channel. Meanders develop, which lengthen the course of the stream, decreasing the gradient. A meander is one of a series of regular sinuous curves in the channel of a river or other watercourse.
Meander cutoff. A meander cutoff is a natural form of a cutting or cut in a river occurs when a pronounced meander (hook) in a river is breached by a flow that connects the two closest parts of the hook to form a new channel, a full loop. The steeper drop in gradient (slope) causes the river flow gradually to abandon the meander which will silt ...
Oregon Trail pioneer Ezra Meeker erected this boulder near Pacific Springs on Wyoming's South Pass in 1906. [1] The historic 2,170-mile (3,490 km) [2] Oregon Trail connected various towns along the Missouri River to Oregon's Willamette Valley. It was used during the 19th century by Great Plains pioneers who were seeking fertile land in the West ...
The Saratoga campaign in 1777 was an attempt by the British high command for North America to gain military control of the strategically important Hudson River valley during the American Revolutionary War. It ended in the surrender of the British army, which historian Edmund Morgan argues, "was a great turning point of the war, because it won ...
An oxbow lake is a U-shaped lake or pool that forms when a wide meander of a river is cut off, creating a free-standing body of water. The word "oxbow" can also refer to a U-shaped bend in a river or stream, whether or not it is cut off from the main stream. [1][2] In South Texas, oxbows left by the Rio Grande are called resacas.
The Battles of Saratoga (September 19 and October 7, 1777) marked the climax of the Saratoga campaign, giving a decisive victory to the Americans over the British in the American Revolutionary War. British General John Burgoyne led an invasion army of 7,200–8,000 men southward from Canada in the Champlain Valley, hoping to meet a similar ...
A point bar is a depositional feature made of alluvium that accumulates on the inside bend of streams and rivers below the slip-off slope. Point bars are found in abundance in mature or meandering streams. They are crescent-shaped and located on the inside of a stream bend, being very similar to, though often smaller than, towheads, or river ...
A bar in a river is an elevated region of sediment (such as sand or gravel) that has been deposited by the flow. Types of bars include mid-channel bars (also called braid bars and common in braided rivers), point bars (common in meandering rivers), and mouth bars (common in river deltas). The locations of bars are determined by the geometry of ...