The dredged navigation channel at Palm Beach, Florida.Although a sand transfer plant is operational at the channel entrance, it can only capture and transfer (across the channel) a fraction of storm-driven sediment that is being lost into the sea.. A more efficient management technique, unfortunately foreign to the Army Corps. of Engineers, is to retain sand on the beach by slowing storm-driven flows before they reach dredged channels, much as it is wiser to stop the momentum of a train gradually - rather than all at once... at the station as it were.

The photo is a model of flow characteristics through a dredged and jettied channel. These navigational cuts flush adjacent beach sand away from the shoreline and into offshore waters. They are the primary cause of beach erosion today.

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