A flood barrier is a structure designed to prevent or reduce the impact of flooding in specific areas. These barriers can be made from various materials, including concrete, earth, or metal, and are often used in regions prone to heavy rainfall or rising water levels. They work by redirecting water away from vulnerable areas, protecting homes, infrastructure, and ecosystems. Flood barriers can be permanent or temporary, depending on the needs of the area. Permanent barriers are built to withstand long-term water threats, while temporary barriers, such as sandbags or inflatable dams, can be quickly deployed during emergencies. Effective flood management often involves a combination of barriers and other measures, such as drainage systems and levees.