Depends on how much ground you are talking about and where.
The total volume of readily available global groundwater is about 4.2 x 106 km3 Groundwater makes up about twenty percent of the world's fresh water supply, which is about 0.61% of the entire world's water, including oceans and permanent ice.
It equals exactly that, 34 cubic kilometres of water!What do you actually want to know?
41 million cubic kilometers, or, about 3%
3,100 cubic miles (mi3) or 12,900 cubic kilometers (km3)
1,310,000,000 cubic kilometers. Each cubic km = 264,172,052,360 gallons
2,434,000,000,000,000 (2.434 quadrillion) cubic meters, or 2.434 million cubic kilometers.
1,382,400,000,000 gallons is about 5.2 billion cubic meters or 5.2 cubic kilometers (1.3 cubic miles). This is equivalent to a cube about 1.7 kilometers, or 1.1 miles on each side.
The groundwater gets the water
The groundwater gets the water
Approximately 2.5% of the water on Earth is fresh water, with about 69% of that locked up in glaciers and ice caps and another 30% stored underground. Only a small fraction, around 0.3%, is found in rivers, lakes, and the atmosphere where it is accessible for direct human use.
groundwater
no groundwater in general dos not involve water vapor as groundwater is liquid water not gaseous water (water vapor).