Water-seeking fish

Application Name: Water-seeking fish

Application Description:
The water level refers to the elevation of the free water surface relative to a certain base surface. The distance from the water surface to the bottom of the river is called the water depth. The base surface used for calculating the water level may be the sea level elevation of a certain feature as the zero level base surface, which is called the absolute base surface. The yellow sea base surface is commonly used; the zero point of the water level can also be calculated by using the specific point elevation as the reference point. Base surface.