![]() ![]() ![]() This migration can lead to the creation of an oxbow lake, which is described further here: (Sumner)/Textbook_Construction/Floodplains_and_Oxbow_Lakes.ĭue to the higher velocity in the middle and outside bend of the river channel, coarser sediment will be deposited in those areas. As this cycle of erosion and deposition continues, the river will migrate in it's river valley. This allows sediment to settle out and be deposited. On the inside bend of the river, known as the point bar, water velocity is slower because it doesn't have to travel as far as the water on the outside of the bend. Erosion is caused by the increase in flow velocity, which has the force to erode and transport sediment from the bank. This area is referred to as the bank of the channel, and it is where erosion of sediment occurs. When the water moves around a curve, the velocity of the water is highest along the outer part of the channel. The bank of the channel is where erosion occurs, and is located on the outer bend of the river. There is a build up of gray colored sediment. The point bar, where sediment is deposited, can be seen in the inner bend of the river. There are distinct sedimentary structures that result from this process.įigure 1: Aerial photograph of a meandering river. There is a differentiation in flow speeds within a meandering river channel that produces areas of erosion and deposition. The bends in the river will migrate back and forth within the river valley. ![]() Meandering Rivers are located on flat terrain that reduces the flow speed of water, allowing the river to curve or "meander". ![]()
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