I have talked about a cereals Sankey diagram by INRIA Grenoble a couple of weeks ago in this post.
Here are two more Sankey diagrams from the underlying article ‘Etude des flux de céréales à l’echelle locale: Exemples en Rhône-Alpes, en Isère et dans le SCOT de Grenoble’ by J. Courtonne, J. Alapetite, P. Longaretti, D. Dupré.
These are the mass flows for cereals production in France (2007/2008) in Mt (1000 tons)
Here is the same cereals process chain “translated” into a water footprint. Unit is million cubic metres of water consumed.
A very clear structure in both diagrams with three columns: grains production, transformation and final products. Choice of color corresponds to the topic.