The scope of control for any river course or lake without embankments shall include the water area, sandbanks, beaches and the flood passage area between the all-time high flood levels or the designed flood levels.

• 无堤防的河道、湖泊，其管理范围为历史最高洪水位或者设计洪水位之间的水域、沙洲、滩地和行洪区。