“…, where D(t) is the channel diameter (m); water pres-(t) indicates the difference between the water elevation in the flow (m), z(t), and the ted elevation of the channel centre ๐ง (m); and โ is the pressure loss along the h of the channel, which is calculated as โ = 1 + , where L is the channel length is the hydraulic channel radius (m), and f is a friction-dependent parameter, which culated as ๐ = 0.2162 ร ( ) / , with ๐ท being the average diameter of the soil les (m) [2,29]. he increment in channel diameter ฮl(t) (Figure 2) is determined by the erosion rate o calculate the erosion of the moraine material by water flow, we used Equation (3), y used in foreign mathematical models [16,30,31]:…”