Anonymized Daily Groundwater-Level Dataset for the July 2023 Extreme Rainfall Event in the North China Plain Alluvial–Diluvial Fan Aquifer

This dataset contains anonymized daily groundwater-level observations from shallow monitoring wells in the piedmont alluvial–diluvial fan area of the North China Plain during the July 2023 extreme rainfall event. The dataset covers a 50-day event window from 20 July to 7 September 2023 and was used to analyze event-scale groundwater-level response trajectories.