The authors regret two minor errors in this article. One is that the lines which indicate the positions of the cross sections C-C′ and D-D′ in Fig. 2 were reversed. Fig. 2 should be corrected as given below. [Figure presented] The authors also regret a typing mistake for the last sentence of the fifth paragraph of Section 5.4. It should be corrected as; “Therefore, we infer that ‘tributary-dominated’ (Grenfell et al., 2010) tributaries may have greater catchment relief than the tributaries in this study area.” The authors would like to apologise for any inconvenience caused.