The Humen Estuary is a tidal-dominant estuary, which is aggraded and stretched at both sides of bedrock by deposition of sediment in river.

• 摘要虎门口是珠江八大人海河口之一，其形成是上游河流携带泥沙在两基岩岛侧淤积延伸的结果，属潮汐优势型河口。