amount of water; volume of water
Refers to the quantity or volume of water in a river, dam, tank, rainfall context, plumbing context, and similar settings.
There has been little rain this year, and the amount of water in the river is decreasing.
They measure the volume of water in the dam every day.
Heavy rain caused the river's water volume to increase.
The dam's water volume decreased at the end of summer.
They installed a device that measures water volume using a sensor.
This dam's water volume is higher than usual years.