Ground Water Level: Overpressured & Underpressured Groundwater Flashcards
1
Q
What is overpressured groundwater?
A
A situation where groundwater pressure below a low permeability layer (e.g., clay) is higher than expected due to connection with a higher ground level area.
2
Q
What is underpressured groundwater?
A
A situation where groundwater pressure below a low permeability layer is lower than expected, often after heavy rainfall.
3
Q
How can overpressure or underpressure be dangerous?
A
Sudden changes can cause piping, soil liquefaction, or structural damage.
