CSA Xpert

Seawater intrusion occurs in the interface between GW and seawater. The density of seawater is higher than the fresh GW that allows seawater to push the GW. Due to excessive use of GW for industry, agriculture (especially rice cultivation), shrimp farming, and fisheries, saline seawater may intrude into the GW table. The wells with saline GW in the coastal region impedes its use as drinking water. Groundwater skimming is a technique that extracts relatively fresh GW from the upper zone of the fresh-saline aquifer (known as Dhorugu technology). Skimming wells play an important role in supply good quality drinking water, irrigation water and control the GW table to prevent its further degradation. The conventional single strainer well, multi-strainers wells, scavenger wells, radial collector wells, and dug wells are various types of skimming wells.