Management of Aquifers - Hydrogeology: Objectives, Methods, Applications - page 225

capacity of water clarifi cation unit to treat. In order to manage this risk,
the spring and a network of 24 piezometers distributed over the entire
watershed are regularly monitored (Périssol, 2004). The drainage basin,
the limits of which remain poorly defi ned, is estimated to cover between
170 and 200 km 2 .
A similar example exists in Montenegro, in Opacica, near the mouth
of the Kotor, where the karst aquifer can be lowered by 20 m below sea
level, thanks to a favorable geologic environment protecting it from marine
contamination.