A natural disaster is a normal phenomenon of nature that affects society and the environment. A natural physical event that kills people (directly or indirectly) or exceeds local capacity to control damage or initiate recovery efforts. The situation or event that overwhelms local capabilities, necessitating a national request for external or international assistance. “This means that the situation or event exceeds local capabilities, demonstrating that not only the In the case of the United States, assistance in the event of extreme events is tied by law to the disaster declaration issued by the president. Current situations are presented in the last part of the century and can undoubtedly help to interpret the number of disasters has increased. Floods and flash floods should be avoided completely while overflows can be accepted if the recovery period is high. Mass movements mass movements that matter limited areas can be avoided if the threat Others are identified in advance and affect large areas or entire valleys, so trying to avoid the threat is costly. Active risk is local, so known faults should be taken into account in land-use planning. Tsunami Because the risk only affects the lower coastal area. , in many places it is relatively easy to move investments to higher ground. High volcanic risk The slopes of active volcanoes are obviously areas that should be avoided. Adapt You can't avoid threats that don't vary much across space. However, some of these can be successfully mitigated, i.e. it is possible to adapt to the threat. Including: Earthquakes These can be mitigated by implementing appropriate building codes, as building failure often causes damage and death. Another side effect is mass movements triggered by... middle of paper......risk contributors. Possible areas could be setting interest rates based on risk areas and level of mitigation, or simply having it as a condition for state loans to build housing and in approved areas with certain rules. Natural hazard data used for the purpose of reducing risk in two ways: either directly leading the way to a decision, as a home buyer, builder, or indirectly influencing their decisions through regulations, standards or interest rates or variable insurance rates in basic level of risk. Depending on the option you choose, the data may be available for free or for a fee. Selling data at a high cost is one end of the scale. The logic of this would be that risk awareness is propagated to all citizens through insurance prices or the availability or non-payment of housing. We are not aware of an example where this has proven effective.