Volume No. 3 Issue No.: 4 Page No.: 1065-1074 April-June 2009




A.G.S. Reddy

1. Central Ground Water Board, Southern Region, Hyderabad (INDIA)
2. Department of Geology, Kakatiya University, Warangal, A.P. (INDIA)


Received on : October 30, 2008




Ground water exploration carried out in the central part of Hyderabad city indicates the presence of high yielding fracture zones down to the depth of 173m in elevated and highly rocky terrain. Occurrence and movement of ground water is mostly restricted to fractured zones developed due to structural disturbances and later intrusive activity. Generally the fractures are found at the contact between the pink granite and grey granite gneiss. Ten bore wells were drilled in granite and granite gneiss down to a depth ranging from 131.70 to 203.0m. The discharges of successful wells vary between 2.11 and 6.91lps at draw down ranging from 7.60 to 20.60m.The transmissivity varies from 8.85 to 201.6 sqm/ day. The wide variation in the discharge and aquifer parameters could be due to the differential fracture disposition and lack of interconnectivity. The chemical quality of water is generally good with a few parameters beyond the permissible limits. The ground water in eastern part, which is a topographic low area having gentle slope and thick population, has high sulphates, nitrates and chlorides indicating the effect of pollution. The water in western part, which is an elevated area with steep gradient, has marginally high fluoride content. The ground water is fit for domestic purposes but needs to be blended with surface waters before used for drinking.


Keywords : Groundwater exploration, Aquifer parameters, Chemical quality, Hyderabad.