A levee is an artificial embankment that is constructed along the banks of a river or other body of water to protect it from flooding. Levees are typically built from earth and reinforced with concrete or stone.
A meander is a bend or loop in a river or stream caused by the natural process of erosion and deposition. Meanders form when the river erodes the softer, outer banks of the river, creating curves in the river. This in turn creates slow-moving pools of water and fast-moving rapids. Over time, the meanders become more pronounced, creating oxbow lakes and other features.
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