Lebanon PA: On September 7, 2011, People woke up to Tropical Storm Lee, which produced Historic flooding. In fact, USGS reports that Harper Tavern gage on Swatara Creek crested higher than it did in Hurricane Agnes, which was 23.72' (1972). Agnes was a 500-year recurrence-interval event in the area. The gage got inundated during TS Lee, and USGS equipment got damaged. However, they retrieved a high water mark of 24.46 ft at the gage on September 09, 2011. The flood of record for the station was June 01, 1889, which crested at 25.6 ft.
At Swatara Watershed Park, preparation was made for a predicted 14' flood, that would not have reached the parking lot.
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