STUDY OF DRAWDOWN IN UNCONFINED AQUIFER IN RESPONSE TO PUMPING
Keywords:
Groundwater, aquifer parameter, WTAQ modelAbstract
Many ground water studies are carried out to estimate withdrawal of groundwater from the aquifer in the
area under safety. For such problems related to ground water, the estimation of aquifer parameter like hydraulic
conductivity and storage coefficient is essential. The governing differential equation for the specially uniform and
saturated hydraulic conductivities is used in the WTAQ model. It provides dimensionless or dimensional drawdown
that can be used with measured drawdown at observation points to estimate hydraulic properties of confined and
unconfined aquifer. Comparison of either drawdown or the parameter estimate by traditional method with those
estimates by the recent model will be carried out. The important aspect of the study is to identify effect of availability
of limited field observation on the uncertainty of the parameter estimation. The outcome will suggest impact of data
availability on the drawdown sand parameter estimates by both methods.