This dataset contains the files required to determine morphological change on the Coledale Beck in Cumbria (UK) immediately following Storm Desmond, which occurred in December 2015, and the continued morphological adjustment experienced through 2016. Specifically, this dataset consists of the following files: (i) a post-Storm Desmond terrestrial laser scan survey (mainSlide_raster0.1.tif); (ii) an outline of the major hillslope failure observed (scarPoints.mat); (iii) calculated morphological change on the Coledale Beck between March and December 2016 (M3C2output.txt); (iv) Basemap of the Coledale Beck study site. This data is used in the research paper produced by Mayes et al (2020) 'Effect of an extreme flood event on solute transport and resilience of a mine water treatment system in a mineralised catchment' Science of the Total Environment. Outputs presented in this article can be reproduced using the MATLAB scripts published at: https://github.com/CatchmentSci/ColedaleChangeDetection