Risks in water resource management can stem from natural causes or poor management. The most wellknown risks from natural disasters are flooding and drought, which are associated with extreme events. Flooding is a natural process that plays an important role in shaping the natural environment, but it can also cause substantial damage to property and threaten human life. Floods cannot be prevented entirely, but their effects can be reduced. At the other extreme, drought is an extended period of months, or even years, when a region notes a deficiency in the water supply due to consistently below average rainfall. The impact on the ecosystem and agriculture can be substantial and intense drought can cause significant damage and harm the local economy.
Therefore, risk management of natural disasters has received a great deal of attention, since sustainable and integrated water resource development and management can enable all potential uncertainties and threats to be managed in order to reduce the negative effects of a temporal and spatial unavailability of water resources.