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## Summary

The MOSART model is supported by a comprehensive, global hydrography dataset at a 0.5-degree spatial resolution. The topographic parameters, such as flow direction, channel length, and slopes, were derived using the Dominant River Tracing (DRT) algorithm, which preserves the key features of a high-resolution baseline hydrography dataset (HydroSHEDS). The channel geometry parameters, including bankfull width and depth, were estimated from empirical hydraulic geometry relationships based on mean annual discharge. The Manning's roughness coefficients for overland and channel flow were calculated as functions of land cover and water depth.

The article provides a detailed list of the parameters included in the global hydrography dataset used by MOSART, including flow direction, drainage area, channel length and slope, topographic slope, local cell area, drainage density, and channel geometry and roughness parameters. The evaluation of global simulations by MOSART using these parameters is described in a referenced publication.