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Water level and WLI changes; (top) water level change and 4 different WLI curves based on 0.5-, 1-, 2-, and 3-h time windows; (middle) the zoomed-in plot of the E1 rainfall event, region A of the top figure; and (bottom) zoomed-in plot of the E4 rainfall event, region B of the top figure. The WLIs calculated by different time windows show the more sensitive change in the rapid water level change case (B region) than the relatively moderate water level change case (A region).
