Geology Reference
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with the standard deviation value at the estimated time. As an example two
cases are shown (Figs 3 and 4). In the beginning the water level data was
not available during the month of January 2000 to October 2000 for all the
25 wells as the wells were newly drilled and the regular monitoring was
started from November 2000 and thus the estimated water level for this
period shows higher standard deviation compared with the in-between
estimated water level. In-between estimated water level for various wells for
certain months shows good agreement with the observed water level and
they follow the trend of the observed water levels. During aquifer modeling
the output of the model is water level which has to be matched with the
observed water levels and any deviation in the water level trend or abnormal
behaviour of water level fluctuation can be justified by calibrating the model.
These results were very useful during calibration of the numerical aquifer
model in transient state with the updated data till July 2003 as the calibration
Figure 3a. 1-D variogram of water level for well IFP-1.
Figure 3b. Observed water level showing data gap for well IFP-1.
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