“Our water well taps into an underground lake”.
“There’s an underground river running beneath our property”.
“The river under our property comes from that volcano over there” (about 100km away)
These are just some of the explanations and descriptions of groundwater that persist in common discussion. Of course there are ‘underground rivers’ but they are generally restricted to limestone country, along with landforms like karst and sinkholes. But underground lakes…?
This, the 3rd post in the Groundwater Series looks at aquifers and groundwater storage