Floods are one of the most common natural disasters in the world. They can cause extensive damage to property and infrastructure, and can also result in loss of life. Floods are caused by heavy rainfall, melting snow, or rising sea levels. When the water level rises above the normal level, it can overflow rivers and streams, spill over dams, and cover low-lying areas. Floods can affect people in many ways. They can damage homes, businesses, and farmland. They can also cause power outages, interrupt transportation, and spread disease. There are many things that can be done to prevent floods. Building levees and dams can help to control the flow of water. Landscaping can also help to prevent erosion, which can lead to flooding.