It is present in any bedrock pore in the phreatic zone.
This substance is assumed to have vertical equipotential lines in order to simplify solutions to an equation for its movement. That assumption named for Dupoit is invoked along with Darcy's law to explain this substance's movement. Pockets of air are found alongside it in the vadose zone. It is present in any bedrock pore in the phreatic zone. Structures that contain it can emit it spontaneously if its namesake "table" is above ground level. This substance flows freely from artesian wells. For 10 points, name this substance, which is found in porous rock in aquifers.
This substance is assumed to have vertical equipotential lines in order to simplify solutions to an equation for its movement.
{water} [accept {groundwater}; or {underground water}; or {H2O}; or other reasonable equivalents]