It is worth noting that sometimes there are opinions that: "Even if the reservoir is full at the time of the flood, the water transfer structures have the ability to handle even the smallest possible large flood." But in such extreme conditions, water transfer is very dangerous, and unpleasant or accidental situations can occur in structures, especially in the lower part. For example, erosion of concrete or metal coatings, failure of mechanical equipment, washing of the bottom floor, etc.