Forecasting Groundwater Level Using Hybrid Modelling Technique - Management of Natural Resources in a Changing Environment - page 93

Fig. 3 Scatter plot of hybrid
model during testing

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Observed Value

Fig. 4 Time series plot of
hybrid model during testing

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Observed GWL
Calculated GWL

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Time(Days)

model is able to extract the input-output mappings inherent in the respective data
employed for the model. From Fig. 3 , it can be seen that the data pairs (observed and
calculated GWL values) for the models are closer to 45° line and hence the model
would give better result.
The time series plot of the observed GWL and calculated GWL of the hybrid
model for the testing case is shown in Fig. 4 . From Fig. 4 it is clearly evident that
both the observed and computed profiles match closely and hence the proposed
model gives quite accurate results.