Nonlinear responses between watershed hydrological functional connectivity and rainfall-runoff-sediment

The dataset includes rainfall, runoff, and sediment data for each rainfall event from 2017 to 2024 in the Longyan Small Watershed, along with the hydrological functional connectivity index (IHC). In this study, a rainfall event is defined as a process in which the cumulative rainfall exceeds 5 mm, with a rainfall interval of no more than 6 hours, and which results in a significant change in the river water level. A total of 221 rainfall events were monitored in the watershed over these seven years.