HydroGeoSphere Model Setup and Simulation Data for Reconstruction of the 2019 Quran Gate Flash Flood, Shiraz, Iran

This dataset contains the HydroGeoSphere (HGS) model setup, input data, parameterization information, and selected simulation outputs used in the study “Reconstruction of a Flash Flood in a Semi-Arid Ungauged Catchment Using Integrated Surface-Subsurface Modeling and Non-Stationary Extreme Value Analysis.” The dataset supports reconstruction of the 25 March 2019 Quran Gate flash flood in Shiraz, Iran. The modeling framework represents coupled surface and subsurface flow processes, including infiltration, surface runoff, subsurface storage, and flood routing. The archived materials include files used to represent catchment characteristics and rainfall forcing, model parameterization and uncertainty analysis, and relevant simulation results used to evaluate peak discharge, flood timing, antecedent precipitation effects, and land-use/urbanization scenarios. These materials are provided to improve transparency, reproducibility, and further evaluation of the model-based results presented in the associated manuscript.