Conclusions (1)
A DTM-based methodology for global-scale flow routing has been developed. The methodology is independent of the geographic location and spatial resolution of the data.
The need for accounting for flow delay in the landscape, especially in large watersheds, became obvious after comparing routed vs. unrouted hydrographs.
Because the spatial distribution of the model parameters (e.g., flow velocity, v, and losses coefficient, k) is unknown, uniformly distributed values were assumed.