This case study examines three sites along the River Spree in Berlin, where more-than-human sensing can be observed. The work explores how the river is shaped by these varied sensing practices that are both technically mediated, e.g. via testing in laboratories, and nonhuman, e.g. plants and water themselves serving as sensors. Carried out by a collective of postgraduate students from the Institute Europäische Ethnologie at Humboldt University, the research engages ethnographically with (Spree)water and considers how we make sense of its complex compositions and potentialities.