A flood at the Danbury Railway Museum has prompted the cancellation of the first weekend of the Santa Train event.  About 7 feet of water flooded the basement of the nonprofit on Sunday, damaging the mechanical and electrical systems.  There is no power in the building, which will be closed until at least early next week.  A broken water line is the suspected cause.  Families who bought tickets for this weekend’s Santa Trains may exchange them for a full refund, another Santa Train or a Bunny Train this spring around Easter.  Santa Trains are still planned for December 13, 14, 20 and 21.  The money from the event is used to preserve antique trains and other equipment.