Automating Hydrological Model Preprocessing: GIS Tools for CATFLOW in V-FOR-WaTer

Hydrological modeling frequently requires time-intensive preprocessing of spatial datasets, including Digital Elevation Models (DEMs), to provide inputs in the desired format for the chosen hydrological model. It takes up important research time and is difficult to repeat. V-FOR-WaTer as a virtual research environment provides a practical methodology for environmental data processing, equipping researchers with tools that streamline model construction, improve reproducibility, and minimize errors.

This abstract emphasizes a use case involving V-FOR-WaTer’s GIS preprocessing tools, which are intended to automate the creation of hillslope geometry files for the spatially distributed hillslope-scale hydrological model CATFLOW. The automated operations convert raw DEMs into key input files, including streams, flow accumulation, aspect, distance to rivers, and elevation profiles. These instruments diminish manual preprocessing duration and enhance repeatability, allowing researchers to concentrate on analysis and scenario formulation.

The GIS preprocessing tool is developed in line with FAIR (Findable, Accessible, Interoperable, and Reproducible) principles, enhancing their adaptability to diverse regions and datasets. Their standardization and accessibility enable seamless integration into various research workflows, fostering consistency and scalability. While the full workflow is under development, preliminary results demonstrate the platform’s potential to harmonize datasets and improve hydrological modeling efficiency.

V-FOR-WaTer encourages hydrologists and environmental scientists to examine the CATFLOW workflow and use its tools to enhance efficiency and reproducibility in hydrological research. This approach ensures that researchers can obtain reliable results while reducing the difficulties associated with manual data preparation.