It depends on what water conservancy project it is. If it is a reservoir, the dam site of the reservoir should choose the canyon area (narrow horizontal distance and large vertical drop); The reservoir area should be selected in river valleys, valleys, or "pocket-shaped" depressions or small basins, which not only has a large storage capacity, but also has a large catchment area.
The construction of the port should consider choosing a sheltered deep-water bay; Avoid rivers with high sediment concentration (so as not to cause river siltation).
Weather stations should be built in places with moderate terrain gradient and open terrain.
Sanatorium should be built in a place with gentle terrain, pleasant climate and fresh air.