VD.03-Groundwater-Groundwater pumping and artesian boreholes - ( BRITISH GEOLOGICAL SURVEY - BGS ).

This video discusses how aquifers can be exposed at the surface (unconfined) or buried by overlying rocks and sediments (confined).

Key ideas:

💧 Aquifers are replenished where they are unconfined 💧 Confined aquifers are covered by low permeability rocks 💧 Confining layers may prevent a direct connection between different aquifers 💧 Groundwater in confined aquifers is under pressure 💧 Pumping groundwater from boreholes lowers the water table in the surround aquifer