Zero-Inertial Recession for Kinematic-Wave Model

Kinematic-wave models of surface irrigation assume a fixed relationship between depth and discharge (typically, normal depth). When surface-irrigation inflow is cut off, the calculated upstream flow depth goes to zero, because the discharge is zero. For short time steps, use of the kinematic-wave model can create an incorrect water-surface profile. Issues include difficulty in solving the continuity equation in the first upstream cell and a...