What is referred to as a hydraulic structure for water outlet?

A hydraulic structure designed for water outlet is essential for managing water flow in various agricultural settings. The headgate serves as a control mechanism for regulating the flow of water from a larger body, such as a canal or reservoir, into a distribution system. It consists of a gate or sluice that can be opened or closed to allow precise control over the volume of water being released.

This structure is particularly important in irrigation systems, where maintaining the right amount of water is vital for crop health. The headgate allows users to effectively manage water resources, minimizing waste and ensuring that the water is delivered only when and where it is needed.

In contrast, a flume is typically used for measuring water flow or transporting it, while a canal is a waterway used for navigation or irrigation but does not specifically control flow as effectively as a headgate. A dam is primarily used for impounding water rather than for the regulated outlet of water. Thus, the headgate is specific in its function as a hydraulic structure that facilitates water outlet control.