Climate change is having a significant impact on the frequency and intensity of floods around the world. One of the main causes is an increase in global temperatures which causes atmospheric warming and increases the water vapor holding capacity. This triggers extreme rainfall, which contributes to flood disasters. Floods can occur due to heavy rain that lasts for a short time or increased water levels in rivers and lakes. In urban areas, flooding is often exacerbated by inadequate drainage systems, which are unable to accommodate the increasing volume of water. With the increase in surfaces that cannot absorb water, such as concrete, water will flow into drainage channels, causing serious waterlogging. In coastal areas, rising sea levels due to melting ice in polar regions and thermal expansion are other important factors. Previously safe areas are now at high risk of tidal floods which can damage local ecosystems and threaten people’s lives. In some cases, as seen in Bangladesh and Vietnam, coastal communities face greater challenges due to frequent flooding caused by a combination of extreme rainfall and rising sea levels. Climate change also affects global weather patterns. Extreme weather phenomena, such as stronger tropical storms, trigger flooding in many parts of the world. For example, Hurricane Harvey in the United States in 2017 resulted in unprecedented flooding due to prolonged heavy rain. This shows how climate change contributes directly to economic losses and loss of life. Floods not only cause material losses, but also have an impact on people’s health. Water contaminated by flooding can increase the risk of infectious diseases, including cholera and other gastrointestinal diseases. Affected communities often experience difficulty accessing health services, potentially exacerbating the situation. The fact that high-risk communities, such as those in densely populated and poor areas, are more affected is evidence of social injustice. They usually have limited resources to mitigate the effects of flooding and are often unable to recover quickly after a disaster. Therefore, a sustainable development approach that considers adaptation and mitigation to climate change is very important. Better infrastructure design and flood risk management strategies are needed to deal with climate change. Governments and international organizations need to work together to increase disaster management capacity and provide resources to vulnerable communities. In addition, educating the public about steps that can be taken when a disaster occurs will be very helpful in minimizing losses. Management of forests and natural vegetation also plays an important role in reducing flooding. Building natural water catchment areas, such as swamps and forests, can help absorb excess water and reduce puddles. Integrating these techniques in spatial planning policies can provide long-term benefits in dealing with the impacts of climate change on flooding. Adoption of better weather monitoring and prediction technologies will enable communities to be better prepared for disasters. By providing accurate and timely information, communities can take preventative steps to protect themselves and their assets from the impacts of flooding. By understanding the impact of climate change on flooding, we can take concrete steps to create a safer and more sustainable future.
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