Reproduction is a key pillar of the scientific method. In this session we celebrate and give a stage to research that reproduces other research and/or efforts to make reproduction of research easier. Earth science in general and hydrology in particular is interesting because every location on our earth, every catchment, is different. In hydrology reproducing research in a new location is therefore important!We welcome:- research that aims to reproduce earlier research, either in the same location or a different location, either with original data or new data.- work on facilitating reproduction of ones own, or others, work particullarly geared to hydrology.- work on how to supervise students and early career scientists in doing reproduction researchWe recognize that reproduction is often done by students and early career scientist and explicitly encourage undergrads, grad students and early career scientists to submit their work.