Answer
A stream channel may become braided when it carries a large amount of sediment that exceeds its transport capacity. This typically occurs in areas with high sediment supply, such as in mountainous regions with active erosion. The excess sediment causes the stream to form numerous interwoven channels separated by bars of sediment. The channels frequently shift and bifurcate as the sediment is continually transported and deposited. The result is a braided stream pattern with multiple channels flowing through the area. Braided streams are often found in glacier-fed rivers or in rivers that experience intense sediment supply during heavy rainfall or snowmelt events.
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