(A) Current topography of the Ebro and Duero basins in the northern part of Iberia. Black dashed line represents the current position of the bedrock incision knickpoint wave in the Duero Basin (Struth et al., 2019). (B) Swath profile of both basins indicating the maximum (red line), mean (green line) and minimum elevation (blue line; river profile). Z_max indicates the maximum infill elevation. CCR: Catalan Coastal Range. The x-axis indicates the age of the bedrock and sediment outcropping along the profile.