Comparison of the Prediction Methods for Production Rate of Collector Well in Riverbank Filtration

In this study, the Milojevic formula, the Hantush formula, and the numerical method, which are the three different methods used to predict the production rate of collector wells in riverbank filtration, were compared. Given a collector well placed in a hypothetical geologic formation, the production rate of the collector predicted by each method was as follows: 5,972 m 3 /day by the Milojevic formula, 5,286 m 3 /day by the Hantush formula, and 6,600 m 3 /day by the numerical method. From these results, the Hantush formula appears to make the safest prediction. However, the Milojevic formula and the Hantush formula cannot take into account the clogging of riverbed which is inevitable in riverbank filtration. Therefore, for now the best method to apply in a collector well design in riverbank filtration is the numerical method with clogging layer included.