In the years 1970-1980 groundwater layers in coastal areas is that the balance between fresh water and salt water, but when a factory has been drilling wells and pumping wells added 13 to use. Causes of salt water taken.
In the year. Fri. 1970 - 1980 coastal aquifers in this area are in a balance between fresh and salt water. But once the plant has drilled 13 wells and increased water use in large quantities. The encroachment of saltwater up.
In 2001. 1970 - 1980 layer groundwater coastal this area is in a state of balance between fresh and salt water But when the factory has 13 pond and pond to increase drilling pump used in large quantities. Effect of seawater invasion.