harbor-renovation - Question and answers

I'm a civil engineer working on a harbor renovation project in a coastal area with high sediment transport. Sediment accumulation has reduced water depth, making it difficult for boats to access the docks. I've done some initial dredging, but the sediment returns within months, and it's becoming expensive. I need advice on long-term strategies, considering factors like tidal currents and environmental impact. What approaches or technologies should I prioritize to minimize maintenance costs and ensure safe navigation?