Chalk Aquifers

Chalk Aquifers


Hi my name is Lou Maurice and I’m a hydrogeologist
and one of my main interests is karst aquifers. When water flows through rock they’re called
aquifers and karst aquifers are the ones where you can get quite big holes in the rock, you
can get what we call conduits and sometimes big cave systems that people can go into. I’ve been working on the chalk aquifer which is our most important water supply aquifer
and what we’ve found is that karst features are really very common in the chalk. So for
water to get from here, when it’s travelling through the ground…. to here, could take several
weeks because the water really generally moves very slowly through the ground. When there’s
karst in the ground then the water can travel much more quickly and so for example it could
travel from here… to here, in just an hour or a few hours. Why’s that important? Because
the water is moving very quickly then pollutants can also move very quickly so we have to think
about this when we’re protecting our groundwater for our supplies.

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