So this is like the 2002 European floods in this way, too.

When the capital development of a country becomes a by-product of the activities of a casino, the job is likely to be ill-done. — John M. Keynes

There were huge floods on the Oder in 1997 or 1998 (can't remember) including the city of Wroclaw. A few years later when I was living there doing research it turned out that the archives are located right on the river. They got flooded. In spite of a heroic effort by the archival staff and a large number of grad students a fair number of documents got damaged or destroyed. Fortunately for me that didn't include postwar stuff, but folks dealing with the Nazi period had some problems.  The waters apparently reached quite far (up to the main street the runs in front of the train station and above the old town for those of you who have been there)