where does the water come from to fill disused quarries

[lucystrong]

well , that's the question... only suggested answer so far was, "get the water from tesco so you get clubcard points"

[Clanad]

In the 1960's here in the western U.S., huge open pit mines for extracting uranium ore were created.  These are pits some 800 feet or more deep and covering perhaps 1 mile square.  When flown over today (they were abandoned in the 1980's) one can see they are nearly 2/3rds full of brilliant green water.  This water comes from seepage of ground water.  The color comes from minerals dissolved in the ground water.  The rainfall in the area totals less than 16 inches per year, so that is not much of a contributor.  The enormous underground aquifers are the primary source, just as it is in underground coal mines that have to be constantly pumped...