Referring to groundwater or water that fills the spaces below the earth's surface.

Describing variations in pressure and water levels in subsurface environments.

सतह के नीचे के वातावरण में दबाव और जल स्तर में परिवर्तन।

English Usage: The phreatic fluctuation was measured during the dry season.

Hindi Usage: सूखे मौसम के दौरान भूमिगत जल स्तर को मापा गया।