Are the beaches on both sides of the river in the reservoir resettlement state-owned?

State-owned

Tidal flat is the general term for beaches, river beaches and lake beaches. It refers to the tidal zone between the high tide level and low tide level along the coast, and the area between the normal water level and the flood level of rivers and lakes. Beachland refers to the beachland below the flood level of seasonal lakes and rivers, and the beachland area between the normal water storage level and the maximum flood level of reservoirs and pits. In geomorphology, it is called "intertidal zone". Due to the action of tides, the tidal flat is sometimes submerged by water, and sometimes it is exposed to the water. The upper part is often exposed to the water, and the lower part is often submerged.