Dredging is the underwater removal of this sediment, which is usually done by a specialized vessel. Regular dredging keeps shipping lanes clear and can even produce new shipping lanes for larger vessels.
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Dredging is more than deepening water for shipping lanes. Here are some of the many uses for dredgers:
Construction materials: dredging can be done to get needed construction materials for a project.
Pond or lagoon cleaning: removing some of the sediment from a stagnant water body can reduce the odor and improve water health.
Mining: sometimes gold and even diamonds are present in the sediment, so the sediment is removed to capture these precious minerals.
Wildlife preservation and ecosystem maintenance: dredging can help to remove many kinds of debris to keep the water clean. According to form: “It also remediates eutrophication, which is an excess of nutrients in the water due to runoff. By solving eutrophication, you stop the excess growth of plant life, which can cause oxygen deprivation.”
In addition to the above benefits, dredged material can be used in land-based construction. The material is removed, dried, and then can be used where additional land is needed. It can restore shorelines, improve the health of aquatic ecosystems, and remove pollutants. The most common benefit is maintaining waterways for trade.