Identify the Feasible Shallow Aquifer Zones in Coastal Sands in Part of Krishna Western Delta Region of A.P.

摘要

The management of groundwater plays a vital role even inCostal zones. Costal sands in Guntur district occupies in an area of about 400 sq.km., covering Bapatla, Karlapalem, Pittalavanipalem, Nizampatnam, Cherukupally and Repallemandals. The groundwater in these coastal sands is being utilized through shallow open wells known as Doruvus. The Water table has been influenced by canal irrigation system and Krishna western delta and . Precipitation. Fresh water in the coastal sands is floating above the saline ground water which occurs in the underlying clay layers. Thickness of sand aquifer is very limited in the area and varies from 2.5 to 5.0m. Occurrence of sand aquifer is not uniform and hence these coastal sandy areas with shallow fresh water in saline ground water region need better management technologies of Skimming and recharging to maintain environmental balance and sustainable irrigation. The paper discusses the distribution of costal sands and possibilities of management technology of skimming and recharging under Prevailing hydrogeological conditions. To assess the thickness of top sandy aquifers, subsurface lithological characteristics, detailed investigations were taken up in the study area.