Constant floods are one of the effects of global warming. Overpopulation leads to further destructions of our natural environment. Floods can destroy cities, agriculture and many industries that are important in the economy. Once the basic necessities such as food and water are affected, it will turn into a total disaster. And investors will become hesitant to invest in such cities and places that are dangerous to their businesses.
Actually natural disasters do occur because of human behavior itself, which does not take care of nature properly and only exploits natural resources.
Therefore, in fact, most areas with a high population density have a high chance of natural disasters such as floods. I agree that human population
must be controlled, because as you said overpopulation will cause environmental damage. Everything actually depends on how the government
educates and controls the population, to prevent flooding due to natural damage caused by humans themselves.