Supporting data for "Groundwater drought characteristics and their relationship with meteorological drought in a highly exploited single-layer unconfined aquifer: a study based on multiple drought indices"

This dataset provides a set of drought indices, including separate indicators for groundwater drought and meteorological drought, specifically designed to evaluate the temporal and spatial characteristics of groundwater drought and to investigate the climate-groundwater interaction mechanisms in the Dagu aquifer. The data covers the period from 1991 to 2021.