Reconstruction of Water Level Time Series in an Aquifer Using Geostatistical Technique

Abstract

Water level is the only parameter that is measured from the aquifer directly and also depicts the dynamics of the aquifer. It is measured normally in static condition but in spite of all precautions taken while measuring the water level there are data gaps. In aquifer modelling, particularly in the calibration of the model in transient condition, a sufficiently long time series of water level is required on all the wells that are used as control points. So to deal with two different situations that are to have a sufficiently long time series of water level at any well, geostatistics was applied to fill the data gap, at the time when the water level could not be measured. With this we obtained a mixed time series of water level at any well containing measured water levels without any error term and the estimated water level with estimation errors at uniform frequency.