Stream features and channelization A. Meander and oxbow as mentioned before, a meander is a snakelike course taken by a stream in which erosion is greatest on the outside or convexed portion often forming a cutbank while deposition is greatest in the inside or concave side often forming point bars click here to see a meander as the outside portion of a meander continues to erode the neck of land between, the outer portions become more narrow finally causing the looped end of the meander to be isolated--this cutoff section is called a meander cutoff or oxbow an oxbow will typically form a lake in the early stage of development and will form an oxbow (or meander) scar over a period of time in which the oxbow lake fills with sediment click here to see steps of oxbow formation click here to see oxbow lakes click here to see a photo of oxbow scars a meander whose channel is deepened by downward erosion is called an entrenched (encised) meander and may be caused by subsequent rejuvenation or uplift of the land and stream channel click here to see a photo of an entrenched meander on the Colorado River in the Grand Canyon B. Alluvial fan and delta as mentioned before as a stream widens it will decrease in velocity and deposit its load a high velocity stream will spread out as it flows from the mountains into the valley and as a result will deposit its load in the form of a fan--the same mechanism causes a delta to form at the juncture of a large river and the ocean--examples of deltas are the Mississippi, and Amazon deltas click here to see an alluvial fan click here to see deltas C. Floodplain and natural levee a floodplain is a relatively flat region flanking most streams and formed by deposition of finer grained sediments during periodic floodings of the 
(convexed portion; forming; a cutbank; T:often) (the outer portions; to be isolated; ) (a relatively flat region; flanking; most streams) (deposition; is; greatest in the inside or concave) (a photo of oxbow scars; may be caused; by subsequent rejuvenation or uplift of the land and stream channel) (the outer portions; causing; the looped end of the meander; T:finally) (Amazon deltas; click; L:here; to see an alluvial fan click here) Context(Amazon deltas click,List([1527, 1546))):(Amazon deltas; click to see; an alluvial fan click here to see deltas C. Floodplain and natural levee a floodplain is a relatively flat region flanking most streams and formed by deposition of finer grained sediments during periodic floodings of the) Context(Amazon deltas click to see,List([1527, 1558))):(an alluvial fan; click; L:here; to see deltas C. Floodplain and natural levee a floodplain is a relatively flat region flanking most streams and formed by deposition of finer grained sediments during periodic floodings of the) Context(Amazon deltas click to see an alluvial fan click,List([1527, 1580))):(an alluvial fan; click to see; deltas C. Floodplain and natural levee) Context(Amazon deltas click to see an alluvial fan click to see,List([1527, 1592))):(a floodplain; is; a relatively flat region flanking most streams) (a snakelike course; taken; by a stream) (it; deposit; its load) (the outer portions; become; more narrow) Context(the outer portions become,List([408, 433))):(a high velocity stream; will spread out; ) (side; forming; point bars; T:often) (erosion; is; greatest; L:on the outside; L:a stream) (the outer portions; will form; an oxbow (or meander) scar over a period of time) (this cutoff section; oxbow; an oxbow) (a meander as the outside portion of a meander; to erode; the neck of land between) (a meander; is deepened; by downward erosion) (it; flows; from the mountains; into the valley) (the oxbow lake; fills; with sediment; T:time) (a floodplain; formed; by deposition of finer grained sediments; T:during periodic floodings of the) (this cutoff section; is called; a meander cutoff)
Amazon deltas click,List([1527, 1546)) Amazon deltas click to see,List([1527, 1558)) Amazon deltas click to see an alluvial fan click,List([1527, 1580)) Amazon deltas click to see an alluvial fan click to see,List([1527, 1592)) the outer portions become,List([408, 433))
convexed portion the outer portions a relatively flat region deposition a photo of oxbow scars the outer portions Amazon deltas Amazon deltas an alluvial fan an alluvial fan a floodplain a snakelike course it the outer portions a high velocity stream side erosion the outer portions this cutoff section a meander as the outside portion of a meander a meander it the oxbow lake a floodplain this cutoff section
forming to be isolated flanking is may be caused causing click click to see click click to see is taken deposit become will spread out forming is will form oxbow to erode is deepened flows fills formed is called
a cutbank T:often
most streams
greatest in the inside or concave
by subsequent rejuvenation or uplift of the land and stream channel
the looped end of the meander T:finally
L:here to see an alluvial fan click here
an alluvial fan click here to see deltas C. Floodplain and natural levee a floodplain is a relatively flat region flanking most streams and formed by deposition of finer grained sediments during periodic floodings of the
L:here to see deltas C. Floodplain and natural levee a floodplain is a relatively flat region flanking most streams and formed by deposition of finer grained sediments during periodic floodings of the
deltas C. Floodplain and natural levee
a relatively flat region flanking most streams
by a stream
its load
more narrow
point bars T:often
greatest L:on the outside L:a stream
an oxbow (or meander) scar over a period of time
an oxbow
the neck of land between
by downward erosion
from the mountains into the valley
with sediment T:time
by deposition of finer grained sediments T:during periodic floodings of the
a meander cutoff