The Kunsthistorisches Institut in Florenz (German Art History Library) has a new site up with an exhibition of the flood. There are some very moving images of the town, and of specific buildings and works of art.

Due to its geographical location, Florence has often been the victim of flooding. In more recent years, the 1844 flood has left a particularly lasting memory, even though the peak of the flooding remained significantly below the peak recorded on November 4, 1966. The photographs taken in these dramatic circumstances serve as silent but impressive witnesses of the history of Florence. The staggering damage to the famous Ponte Vecchio illustrates the extent of the flood catastrophe.

Thanks to Alexandra in the comments for letting us know about this.