In the end, it will be written in the history of Denpaged, that...well, noone will write about the flood. A saviour stepped forwards, in the nick of time, to ensure the safety of the fortress. An unsung hero, no one will remember his name.
And not just because they were all drunk at Ludwig's party.
Did I say Nick of time? I meant depths. At some point in the early days of the fortress, someone put a U bend in the mining tunnels. Someone - probably Jan or Lud, but noone seems to recall, dug a flood safe mining tunnel.
This remarkable act of foresight and competence (remarkable in comparison to the sheer inept flailing that precipitated the flood) has saved us all! Rejoice!