3-Data Base Management - Retrieval of Groundwater Level Fluctuation Data.

Abstract

A network of more than thousand observation wells.has been established by Central Ground Water Board, all over the state of Orissa. Since 1988 PC/XT is being used for storage and retrieval of voluminous data using programs in D Base III plus which was earlier done manually. Now with advanced computer facilities provided' by N.I.C.,Bhubaneshwar, the data are stored in NEC-S-1000,working under the control of ACOS. After each measurement of network hydrograph stations, reports are prepared in the form of tables showing districtwise frequency of water level fluctuatios as compared to similar periods of the previous water year, as also premonsoon period of the current water year. This presents, at a glance, the number and percentage of wells falling in different flin.tuation intervals with maximum and minimum rise and fall . This Is an easy way to depict changes in groundwater regime in response to recharge or draft. Earlier the computation and generation of frequency table was done manually. Now this table is obtained ,using a software developed by N.T.C. The paper discusses generation of the frequency tables showing groundwater level fluctuation using this software.