Respuesta :
The construction of levees is why the river reached this condition.
what is a flood plain?
A relatively flat region of land near a river or stream is referred to as a floodplain (or floodplain). It extends from the river's banks to the valley's outer reaches. A floodplain is divided into two sections. The first is the floodway, which is the river's main channel.
A levee is a dam with a specific function: to guard against floods caused by seasonally high water. Levees are vulnerable to water loading for only brief periods each year, ranging from a few days to a few weeks, unlike small earth dams. They must therefore be created and designed using levee-specific standards.
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https://brainly.com/question/1000851
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