Fresh-salt water balance in a coastal area under natural condlitions altered slightly by ground-water withdrawal.
Inland migration of fresh-salt water interface as a result of construction of an uncontrolled tidal canal which allows increased discharge of fresh water from the aquifer and
inland movement of salt water through the canal.
Fresh-salt water interface migrates farther inland as pground water withdrawals increase and canal is extended. Can cause
saline contamination of a previously fresh supply.
Figure 15. Results of alerting the fresh-salt balance in the aquifer in a coastal area.