Merged DEM and ACOLITE-Corrected Sentinel-2 Dataset for Satellite-Derived Bathymetry in Uiam Reservoir, South Korea

This repository contains the merged DEM–Sentinel-2 dataset used in this study for Uiam Reservoir, South Korea. The dataset was generated by spatially combining DEM-derived elevation information with Sentinel-2 reflectance data after atmospheric correction using ACOLITE for two acquisition dates: 1 July 2023 and 9 September 2023. Each record represents a grid cell and includes projected coordinates (x, y), DEM-derived elevation (z), grid indices (gx, gy), a unique grid-cell identifier (cell), geographic coordinates (lon, lat), and atmospherically corrected surface reflectance values (rhos) for 11 Sentinel-2 spectral bands: 443, 492, 560, 665, 704, 740, 783, 833, 865, 1614, and 2202 nm. The dataset was prepared to support reproducible analyses of satellite-derived bathymetry (SDB) and depth-dependent optical variability in a morphologically complex reservoir environment. It provides the core input data used to examine regime-dependent relationships between water depth and spectral response under contrasting optical conditions. Column description- x, y: projected coordinates- z: DEM-derived elevation value- gx, gy: grid indices- cell: unique grid-cell identifier- lon, lat: geographic coordinates- rhos_443 to rhos_2202: ACOLITE-corrected Sentinel-2 surface reflectance values for the corresponding spectral bands Notes- Sentinel-2 images were atmospherically corrected using ACOLITE.- The dataset includes two Sentinel-2 acquisition dates with different optical conditions.- The files are provided in plain text format for transparency and reproducibility.- These data are intended for research use related to reservoir bathymetry retrieval, optical analysis, and remote-sensing-based water studies.