Abstract
This study is conducted to find out correlation between released groundwater volume and groundwater level and salinity degradation as well as to find effective infiltration holes formation for groundwater augmentation. It belongs to field experimental research. This study concludes some concerns, they are: (1) Groundwater condition in farm land of coastal area in Takalar Regency has undergone salinization and groundwater salinity escalation in every groundwater release is very high. Groundwater release volume is directly proportional to groundwater salinity escalation with relatively high rate on its escalation gradient; (2) Total degradation of groundwater level in coastal farm land ranges from 14 to 15 cm, and it is relatively low compared to total occurred degradation of groundwater level in observed inner land in early year (ranging from 100 to 150 cm); (3) Number of infiltration hole significantly affects escalation volume of augmentation and groundwater salinity rate degradation.
Highlights
Groundwater is one of important wellsprings for organism
Selection on farmer's exploited well as the object of the study is based on research purpose, that is looking for effective infiltration hole formation in order to reinstate groundwater level and to reform groundwater quality which was intruded by sea water
Observation results can be divided into two parts, they are: (1) Data of groundwater level change; it indicate groundwater degradation and groundwater salinity escalation in consequence of conducted pumping during dry season
Summary
It is stored in soil layer that is known as aquifer. Majority residents of Takalar Regency are farmer, and since 1980, they have utilized groundwater for agricultural irrigation purposes (Statistical of Takalar Regency, 2009). Impact of groundwater exploitation carried out by farmer in coastal area has significantly downgraded groundwater quality. Direct threat as the impact of long-term and mass groundwater utilization affects the occurrence of groundwater degradation which creates a cavity space inside of this vulnerable soil layer from saline water of the sea. This condition will raise groundwater salinity and disrupt soil and surface ecosystem balance
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