The Geomorphic Flood Index (GFI) v2.0 is a MATLAB-based toolbox designed for the rapid and reliable delineation of flood-prone areas, particularly in data-scarce environments.
Building upon the original GFI method, version 2.0 introduces a Hierarchical River-First Update (River-to-Confluence mapping). This advancement accounts for downstream backwater effects and confluence influences, improving spatial accuracy and water depth consistency by propagating downstream flood depths to upstream segments.
The example present in the .ZIP is using a DEM of 5m. Due to the high resolution, the time consuming should be considered based on the computer capacity, specially in when PARFOR is used.
Citation:
Manfreda, S., Saavedra Navarro, J., Albertini, C., Zhuang, R., Pacia, F. D., Chaturvedi, S., & Samela, C. (2026). Geomorphic flood index 2.0: Enhanced tools for delineating flood-prone areas in data-scarce regions. Catena. [pdf]
Navarro, J. S., Albertini, C., Zhuang, R., Chaturvedi, S., Pacia, F. D., Samela, C., & Manfreda, S. (2026). Geomorphic Flood Index (GFI) version 2.0 (2.0). Zenodo. https://doi.org/10.5281/zenodo.18903835