Seepage Undermines Flood Barriers

Flood barriers and sandbag dikes are undermined by water seepage which cannot only erode the soil on which the sandbags and barriers lay. They can also result in “floating” water-filled barriers depending on the height and weight of the barriers and the height of the water which has seeped underneath. The lifting of these barriers and the erosion of the soil underneath may cause both sandbag barriers and water-filled barriers to shift position ultimately “breaking” the wall and letting flood water through.

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