drawdown curve

(1) Vertical section through the centre of a cone of depression.

(2) Graph showing the variation with time of the water table as caused by pumping.

(3) Profile of the water surface when its surface slope exceeds the bed slope. (ISO/772).

 

Source:

UNESCO/WMO International Glossary of Hydrology (2nd revised ed., 1992)

Posted on February 10, 2014 .