The overflow dredging method is predominantly used to dredge silt and, generally, only with outgoing tide. It is the quickest method of getting rid of sand banks with relatively loosely packed silt.

• 溢流疏浚法主要且于疏浚泥沙，一般只利用退潮来进行。这个方法清除松散堆积的沙坝最快。