As part of the Po Valley project, I have been working for a while on the hybrid process of knowledge production about water. A forthcoming paper of mine on water science and state hydrography in the Po River basin is now available online through the advance access option of the journal Environment and History and via my academia.edu page. I am particularly happy about this article, because it is the first peer-reviewed output of this project. It is also my first incursion in the history of science (and technology) and I will have the chance to present it at the Max-Planck Institut für Wissenschaftsgeschichte in Berlin this coming winter. One more reason to be excited about it!