water depth; depth of water
Refers to the depth of a body of water, such as a river, lake, or sea. Often used in technical, geographical, or safety contexts.
この川の水深は約2メートルです。
The depth of this river is about 2 meters.
水深が浅いので、大型船は入れません。
Because the water is shallow, large ships cannot enter.
This pool has a water depth of 1.5 meters.
The water here is shallow, so please be careful.
They lowered a device from the boat to measure the water depth.