88°15'0"E 88°30'0"E 88°45'0"E 89°0'0"E DISTRICT NORTH 24 PARGANAS HYDROGEOLOGICAL MAP 23°15'0"N 23°15'0"N Bagda Ic h a m a ti R ± . Bongaon 23°0'0"N Nadia District 23°0'0"N Gaighata B A Barrackpur-I N G . R i l L g Hugli District u H A Habra-II D Amdanga Swarupnagar Habra-I E S H Baduria 22°45'0"N Barrackpur-II 22°45'0"N Haora District Barasat-I Deganga Barasat-II Basirhat-II Basirhat-I Rajarhat Haroa Hasnabad Minakhan 22°30'0"N Legend 22°30'0"N River District Boundary Sandeshkhali-I Block Boundary Rock Type Hingalganj Very fine sands and silts Sandeshkhali-II R a i m Alternate layers of sands,silts and dark grey clays a n g a l a R . 22°15'0"N 0 2.5 5 10 15 20 22°15'0"N Kilometers Projection & Geodetic Reference System:GCS,WGS 1984 Symbol Rock Type Age Lithology Aquifer Description Hydrogeology Sand,silt and dark grey clays Middle to Upper Holcene Deltaic plain,para deltaic fan surface, Confined and uncomfined aquifer, Yield prospects at 40 lit/sec semi to unconsolidated sediments aquifer with primary intergranular with intergranular porosity porosity Sand,silt and dark grey clays Middle to Upper Holcene Deltaic plain,para deltaic fan surface, Deeper aquifer at >15.4m b.g.l. Yield prospects at 40 lit/sec semi to unconsolidated sediments and are generally flowing condition. with intergranular porosity Shallow aquifers are brackish Sand,silt and dark grey clays Middle to Upper Holcene Deltaic plain,para deltaic fan surface, Fresh water is overlain by saline Depth of water table ranges from 22°0'0"N semi to unconsolidated sediments ground water 1m to 3m bgl and the fresh water 22°0'0"N with intergranular porosity is overlain by saline ground water Sand,silt and dark grey clays Middle to Upper Holcene Deltaic plain,para deltaic fan surface, Shallow aquifer between 12-24m Yield prospects at 40 lit/sec semi to unconsolidated sediments b.g.l. with intergranular porosity Reference:CGWB & GSI 88°15'0"E 88°30'0"E 88°45'0"E 89°0'0"E.