This repository contains data for an investigation that used a HEC-RAS hydraulic model, Geomorphic Change Detection software and Geomorphic Unit Tool to assess the geomorphic changes of a re-meandered  section of the Eddleston Water (United Kingdom) and their impacts on flood attenuation and physical habitat diversity. The hydraulic model used topographic data acquired prior to 2013, in 2018 and 2020. This dataset includes: (A) HEC-RAS model inputs; (B) HEC-RAS model outputs; (C) Geomorphic Change Detection project; and (D) Geomorphic Units outputs. *All geospatial data are in the GCS_OSGB_1936 coordinate system.