Floodgates are typically defined as hydraulic gates that are used to regulate water flow through a system. Floodgates allow the passage of water from an area to another area by creating an air gap between the opening and the gate. They are usually adjustable to allow controlled flow into a confined space, such as a pond, body of water, a stream or a river. Floodgates are also known as gateways, as they allow for easy entrance and exit of waters. These gates also help prevent flooding in homes, businesses, and other enclosed areas.
Floodgates can either be vertical or horizontal, with the most common type being the vertical variety. Most floodgates are used to lower a lake or other body of water, while others are used to protect manmade structures such as bridges, sewer lines, and even dams and water dams. Floodgates can also be horizontal, which lower the water level of a river or stream. Another type is the sluice gates, which have a slender opening that allows water to flow freely in and out of a channel. There are both vertical and horizontal types of floodgates. It depends on the specific needs of a particular situation and the amount of water that need to be protected.
Floodgates can also be controlled manually using a switch, lever, or other device that can be attached to a door, pipe, or other outlet. Flood protection can be vital if a dam is near a residential area or office building. The raising or lowering of floodgates can prevent flood damage to these areas, as well as hinder potential evaporation of the ground water caused by excessive rainfall or snow melting. Floodgates can keep a dam from releasing excessive amounts of water, which can lead to the devastating effects of flash floods and mudslides. By installing floodgates at a commercial or residential dam, homeowners can save their properties, as well as any nearby businesses.