Figure 1: Particular example of real measured values (in black) and the Math-1D model simulation (in gray). Flow rate values [m^{3}/s] on the vertical axis are measured on a particular measuring station placed on the Odra River starting from time −119 up to 0 (horizontal axis, time []). Starting from the time point “0” to the right, the gray curve denotes the forecast of future flow rate values.