District Birbhum Hydrogeological
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87°15'0"E 87°30'0"E 87°45'0"E 88°0'0"E DISTRICT BIRBHUM 24°30'0"N HYDROGEOLOGICAL MAP 24°30'0"N Murarai-I Murarai-II ± Nalhati-I Nalhati-II i i Nad hman 24°15'0"N Bra 24°15'0"N Rampurhat-I Rampurhat-II d an kh ar Jh Mayureswar-I Mohammad Bazar 24°0'0"N 24°0'0"N Rajnagar Mayureswar-II M Murshidabad ayu raks hi N District adi Suri-I Sainthia Suri-II Labpur Khoyrasol Dubrajpur 23°45'0"N Legend 23°45'0"N Rock Type Alternating layers of sand,silt and clay Illambazar Bolpur Sriniketan Nanoor Hard clays impregnated with caliche nodules Laterite and lateritic soils Aj ay R iver Rajmahal trap-basalt Barddhaman District Sandstone and shale 23°30'0"N 23°30'0"N Black and grey shale with ironstone sandstone River 0 2.5 5 10 15 20 Pegmatite (unclassified) Kilometers Granite gneiss with enclaves of melamorphites District Boundary Quartzite Block Boundary Projection & Geodetic Reference System: GCS,WGS 1984 Symbol Rock Type Age Lithology Aquifer Description Hydrogeology Sand,silt and clay of flood plain, Multiple aquifer systems occur, Low to heavy-duty tubewells are Hard clays Jurassic to Late mature deltaic plain and in general, in the depth of feasible.The yield prospect is 23°15'0"N with caliche Holocene 23°15'0"N para-deltaic fan surface and 12-396m b.g.l. 7.2-250 cum/hr nodules, sand,silt, lateritic surface rajmahal trap basalt,laterite Ground water occurs,in the Dugwells and borewells or Shale,sand stone, Archaean to Soft to medium hard weathered residuum within dug-cum-borewells are feasible in silt stone, Triassic sedimentary rocks 6-12m b.g.l. this area.The yield prospect is pegmatite, of pediplain-peneplain. 0.18-96 cum/hr granite gnelss, Fractures are found in the metamorphites granite gneiss and in the and quartzite eastern part the hardrock is overlain by laterite capped alluvium In the trap hydrogeological Water bearing fractures are Amphibolite, Archaean to Exposed hard massive or formation borewells tapping encountered within 60m b.g.l. hornblende Proterozoic foliated rock of Rajmahal trap fractures in the depth span 23°0'0"N schist in the western part of 10-13,18-30 and 44-56m b.g.l. 23°0'0"N can yield 10 cum/hr Reference:CGWB & GSI 87°15'0"E 87°30'0"E 87°45'0"E 88°0'0"E.