Die Nacht der großen Flut (2005)

The major flood disaster on February 17, 1962 hit Hamburg completely unprepared. It left 315 dead and 10,000 people homeless. Almost a fifth of Hamburg's urban area was under water. In times of need, the people of Hamburg followed their young police and interior senator Helmut Schmidt, who later became Chancellor, who gained respect nationwide in those days.

Unfortunately the movie Die Nacht der großen Flut is not yet available on HBO Max.