Independent Test Set: Multitemporal Sentinel-2 Patches (64×64) for Flood Mapping – Ibicuí River Basin, Rio Grande do Sul, Brazil

The Sentinel-2 acquisitions used are: three pre-disaster images (May 1, 2025; May 4, 2025; June 8, 2025) and one post-disaster image (June 23, 2025).It enables robust evaluation of flood mapping models under two temporal configurations that vary the number of pre-flood observations:3-time setup: 2 pre-flood + 1 post-flood acquisition4-time setup: 3 pre-flood + 1 post-flood acquisitionIn both cases, the post-flood acquisition and flood mask correspond to the same reference date (June 23, 2025).Data Structurepatches_crops_images_3times/:4 crops (crop1–crop4), each containing:images/: patches with 9 channels — 3 time steps, each composed of Green, Red, and Near-Infrared (NIR) bandsmasks/: corresponding flood masks indicating flooded and non-flooded areaspatches_crops_images_4times/:Same 4 crops, each containing:images/: patches with 12 channels — 4 time steps, each composed of Green, Red, and Near-Infrared (NIR) bandsmasks/: identical flood masks as in the 3-time setupPatch counts:| Crop | Patches || crop1 | 187 || crop2 | 420 || crop3 | 168 || crop4 | 160 || Total | 935 |Spatial ReferenceCRS: EPSG:32721 (WGS 84 / UTM zone 21S)Resolution: 10 m/pixelLocation: Ibicuí River Basin, Rio Grande do Sul, Brazil