Water injection dredging is a dredging technique that involves using high-pressure water jets to loosen and dislodge sediment from the bottom of a body of water. The sediment is then transported away by the water flow, creating a channel or deepening an existing one. Water injection dredging is often used in shallow waterways and can be a more environmentally friendly option than traditional dredging methods that involve removing sediment mechanically. It can be used to dredge small channels, harbors, and ports, as well as for beach nourishment projects. One of the advantages of water injection dredging is that it can be operated remotely, reducing the need for divers or other personnel to work in the water. This can make the process safer and more efficient. Additionally, the water used in the process can be filtered and returned to the waterway, minimizing the impact on the local environment. Overall, water injection dredging can be an effective and environmentally friendly method for removing sediment from waterways, though it may not be suitable for all situations.