Derived event tables, landscape source–sink metrics and module scores for "Landscape sink capacity dominates transferable prediction of multiday nutrient–oxygen persistence after extreme rainfall across the Huaihe River Basin"

This deposit contains pseudonymized derived event- and site-year-level data, frozen out-of-sample predictions, bootstrap summaries, figure inputs and validation materials supporting the manuscript “Landscape sink capacity dominates transferable prediction of multiday nutrient–oxygen persistence after extreme rainfall across the Huaihe River Basin”. Exact dates, station and river names, original identifiers, precise coordinates, matched control pairs and the original 4-hourly monitoring records are excluded. Display-only coordinates are rounded to 0.01 degree. This deposit uses mixed file-level licensing. The applicable licence, upstream attribution and rights holder for every file are specified in LICENSE_MATRIX.csv: 19 MERIT-derived analytical CSV files use ODbL 1.0; the other analytical CSV files use CC BY 4.0; support files use CC BY 4.0, CC0 1.0 or MIT. No licence grants rights in excluded original monitoring records or upstream source rasters. Companion software: https://github.com/lkwdd/huaihe-persistence and https://doi.org/10.5281/zenodo.21839611.