Disadvantage:

　　1.Pollutionofdrinkingwater(cleandrinkingwaterbecomesscarce)

　　2.Structuressuchasbuildingsgetdamagedduetofloodwater.

　　3.Landslides.

　　4.Peopleandlivestockdieduetodrowning.Itcanalsoleadtoepidemicsanddiseases.

　　5.Unhygienicconditions.Spreadofwater-bournediseases.

　　6.Shortageoffoodcropscanbecausedduetolossofentireharvest.

　　7.Economichardship,(temporarydeclineintourism,rebuildingcosts,foodshortageleadingtopriceincreaseetc)

　　Advantage:

　　Floodingcanbringbenefits,suchasmakingsoilmorefertileandprovidingnutrientsinwhichitisdeficient.Periodicfloodingwasessentialtothewell-beingofancientcommunitiesalongtheTigris-EuphratesRivers,theNileRiver,theIndusRiver,theGangesandtheYellowRiver,amongothers.