HYDROGEOLOGICAL MAPPING IN THE DECCAN BASALTS - AN APPRAISAL

A great deal of diversity exists in the approaches to hydrogeological mapping of the Deccan basalts. For any hydrogeological study in the De ccan basalts to be fruitfully applicable, there is an ardent need to s tandardise the procedure towards hydrogeological mapping. To overcome practical difficulties in the hydrogeological mapping of the Deccan ba salts, a systematic approach which is based on a lithological model ob served widely over the Deccan basaltic province is proposed here. The approach incorporates mapping on a suitable scale that defines the inh omogeneities in the hydrogeological character of the basalts. Detailed acquisition and systematic representation of data (such as recording the configuration of inflow zones in wells) and the capacity of extrap olation over the Deccan basaltic terrain render this approach more use r-friendly.