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Illustration of a river from above with flow arrows, showing wing dams and erosion control mats.

Illustration of a river from above with flow arrows, showing wing dams and erosion control mats.
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(Draw a top-down view of the river channel below this text. Use arrows to indicate flow direction. Show where the wing dams (small metal pieces) are placed along the riverbanks, sticking out toward the middle to narrow the flow. Then show where the rubber mats (riprap) are placed on the banks to prevent erosion.) See more

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