HyLands model run showing evolution of the landscape to steady state.The upper left subplots show the evolution of topography through time. The upper right subplots show the evolution of of sediment thickness(H) through time. On both subplots, the blue line represents the location of the river, plotted in the lower subplots. These lower subplots show the topographic and bedrock elevation (red and black line respectively). The difference between the topographic elevation and the elevation of the bedrock represents the sediment thickness. With respect to total elevation, sediment thickness is small, which is why sediment thickness (orange line) is also plotted against a separate right-hand y-axis. The gray shaded area represents bedrock underlying the river profile.