This paper is the third part of a reflective work on building a socio-hydrological approach. It focuses on the interdisciplinary dialogue between members of a research team associating the social and biophysical sciences. The key point is the construction of the interdisciplinary dialogue when it is not anchored in the previous experience of shared fieldwork. The creation of a framework to structure the dialogue is based on the premise that sharing experiences is crucial for negotiating a convergence between social and biophysical perspectives on reality. The first stage is to select an object on which to focus a collective analysis, in the present case the small-scale irrigation canals. The second stage consists in testing the framework during a three-day workshop. Third comes the collective negotiation of the analysis presented in the paper. Analysis of the construction, experimentation and evaluation process of the framework is considered an integral part of the interdisciplinary process. The dual approach of this contribution, i.e., experimentation and reflexivity, allows the analysis of the modalities of the interdisciplinary dialogue and questions the importance of frustrations in the progress of the interdisciplinary negotiation.