överflödesmagasin

An överflödesmagasin, often translated as overflow magazine or spillway, is a component of a dam or a water-retaining structure designed to safely release excess water when the reservoir reaches its maximum capacity. This prevents the water level from rising above the dam's crest, which could lead to overtopping and potential structural damage or failure.

Överflödesmagasins can take various forms, including free overflow dams, where water simply flows over the entire crest, or controlled spillways that incorporate gates or other mechanisms to regulate the release of water. The primary function is to protect the dam and downstream areas from the destructive force of uncontrolled water release. The design and capacity of an överflödesmagasin are crucial engineering considerations, calculated based on factors such as expected rainfall, snowmelt, and the size of the watershed area draining into the reservoir. Proper functioning of the överflödesmagasin is essential for the long-term safety and operational integrity of any water storage project.