On November 2nd and 3rd an international 2-day course on iMOD-modelling was held, part of the Deltares Software Days. This iMOD-course focused on building one’s own iMOD-groundwater model from scratch or enhancing/converting your existing MODFLOW model into iMOD. Participants brought their own laptop including their own data or groundwater model. The participants were guided and assisted by iMOD-specialists with years of experience with iMOD modelling. At the end of these two days the participant had a first or enhanced version of an iMOD-groundwater model based on their own data. During the course workflows, tools and possible workarounds were shared. The interest in a course with a ‘bring your own data’-concept specifically on a pre-set date strongly depends on the coincidence of consultants just starting a new groundwater modelling project; we are considering offering this type of course with a higher frequency; for more info, please contact us.