Sentinel-2 reservoir fills as a gauge-independent benchmark for precipitation products — Saudi Red Sea escarpment, 2017–2025

The package contains an inventory of 2,574 intermittent water bodies mapped from the full Sentinel-2 L2A archive along the Saudi Red Sea coast (16.4–29.4°N), 2,356 fills detected at 598 valley water bodies, catchments traced from MERIT Hydro, daily catchment rainfall from five precipitation products, all fill and no-fill evaluation windows, the validation and sensitivity results, and every Earth Engine and Python script used.