Information on monitoring wells for provinces coverd by the North China Plain

Supplementary data for the paper "Dynamic Multi-layer Aquifer Behavior in the North China Plain Revealed by GRACE and Well Observations", by Hu et al.The two tabular files contain essential monitoring well data from the yearbook, compiled by the Institute of China Geological Environment Monitoring (ICGEM), corresponding to the periods 2005–2017 and 2018–2022, respectively. The first ten columns describe the well monitoring attributes, while columns from the eleventh onward provide monthly groundwater level elevations (or depths) recorded within the respective monitoring intervals.