Modeling geologically complex volcanic watersheds for integrated water resources management - Dataset

This dataset supports the study titled \"Modeling geologically complex volcanic watersheds for integrated water resources management,\" which presents a transferable and reproducible workflow for developing high-resolution 3D geological models for use in integrated surface–subsurface hydrological simulations. The workflow is demonstrated using the Mt. Fuji catchment in Japan—a region characterized by complex volcanic geology, active tectonics, and increasing stress on groundwater resources. The dataset includes all relevant model input files, exported hydrofacies surfaces, meshing outputs, and scripts used in the study. Specifically, the repository provides: (i) input files: digitized hydrofacies information as implemented in the NHM obtained directly from GETC and supplied as shapefiles, containing contour lines of the bottom bounding surface of each hydrofacies as well as polygons defining their horizontal extent ; (ii) 3D hydrofacies bounding surfaces in raster and DXF format, (iii) the 2D numerical mesh, and all the input configuration files for the HydroGeoSphere model used to run the simulations. The output files from the simulations are also availabe (Tecplot and Paraview-compatible files). These resources are intended to enable the visualization, reuse, adaptation, or extension of the modeling framework in similar volcanic or geologically complex regions. The dataset facilitates further work in groundwater resource evaluation, model calibration, scenario analysis, and environmental risk and hazard assessment.