drought and flood prevention
Flood Prevention and Control
flood prevention and cure
flood prevention and disaster reduction
flood prevention and drought relief command system
flood prevention and drought resistance
Flood prevention and fighting against natural disasters
flood prevention and mitigation
flood prevention and safety analysis
flood-prevention and dispatch command system
structural water prevention and drainage
the seepage prevention and drainage system
irrigation and drainage and rural water supply
agricultural drought and flood disaster
Agricultural Drought and Flood Index
Agricultural flood and drought disaster
Anomaly of drought and flood years
benefit of flood prevention