A gravity dam is a type of dam that relies on its own weight to resist the force of water pushing against it. Typically made from concrete or masonry, it is designed to be thick at the base and tapering towards the top, allowing it to effectively hold back large volumes of water in a reservoir. The structure's stability comes from the gravitational force acting on it, which counteracts the water pressure. These dams are often built in locations where the foundation is strong enough to support their weight. Commonly used for hydroelectric power generation, flood control, and water supply, gravity dams can be found in various regions around the world, contributing significantly to water management and energy production.