Abstract

Northern France, with less annual rainfall than most other parts of the country and no large rivers, has extensive and increasing water-supply requirements because of the dense population and a rapidly expanding industry. The piezometric level of the Carboniferous limestone aquifer dropped 35 meters between 1917 and 1957, 15 meters of this between 1952 and 1956. Water tables in Cretaceous chalk and in Tertiary sands also have varied strongly. Serious water shortages are foreseen if there should be a succession of dry years.

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