“…River flow modeling is a very popular approach in science and education, as well as in small, medium-size, and large technical projects in the areas of water management [1,2], river regulation [3,4], sediment transport [5], flood protection [6], and many others [7,8]. There are several professionally prepared and widely used commercial and non-commercial models for river flow, e.g., HEC-RAS [9], MIKE 11 [10], Delft Sobek [11], BASEMENT by ETH [12], and SRH1D [13].…”