Flood barriers are structures designed to prevent or reduce the impact of flooding in vulnerable areas. They can be made from various materials, including concrete, steel, and inflatable materials, and are often deployed in places like coastal cities or riverbanks to protect homes and infrastructure from rising water levels. These barriers can be permanent installations or temporary solutions that are set up during flood events. Some advanced flood barriers are adjustable, allowing them to be raised or lowered based on the severity of the flood threat. Their effectiveness can significantly reduce damage and enhance safety during extreme weather events.