The flood necklace piece represents the Loire river floods data btw 1800 and 2003, by water heights. The white spheres are the 2 "big ones" of 1856 & 1866 that lead to a national new policy for river management in France. #envhist. Tangible & Sensible historical knowledge about landscapes can be conveyed through #datartefacts & #datasculpture . Slow making of such #dataviz also impacts the relationship btw the data and the maker, allowing for better appropriation, as well as tactile memory.