Hydrodynamic types in karstic river valleys

Hydrodynamic conditions of a karst valley is the comprehensive manifestation of karst hydrogeology, structure, and moving state of groundwater in the river valley. The circulation of karst groundwater is controlled mainly by the base level of drainage, and then by the hydrogeology, structure, and network of groundwater. According to different basic elements various karst hydrodynamic conditions have been formed. They may be divided into five categories and ten types. Each type has its own hydrogeological features. They can be used as reference data in planning, siting, researching damsites and appraising the karst hydrogeological condition of the damsite in a karstic reach of a river.