116 



Table 8.1. Methods for Controlling Saline Water Intrusion (reprinted with 



permission from D. K. Todd, Groundwater Hydrology , copyright 1980, 

 John Wiley & Sons, Inc.) 



Source or Cause of Intrusion 



Control Methods 



Seawater in coastal aquifer 



Upconing 



Oil field brine 



Defective well casings 



Surface infiltration 



Saline water zones in freshwater 

 aquifers 



Modification of pumping pattern 

 Artificial recharge 

 Extraction barrier 

 Injection barrier 

 Subsurface barrier 



Modification of pumping pattern 

 Saline scavenger wells 



Elimination of surface disposal 



Injection wells 



Plugging of abandoned wells 



Plugging of faulty wells 



Elimination of source 



Relocation and redesign of wells 



