Night Of the Johnstown Flood

Bruce Springsteen wrote:

Me and Frankie laughin' and drinkin'
Nothing feels better than blood on blood
Takin' turns dancin' with Maria
As the band played "Night of the Johnstown Flood"

Is there a song call "Night of the Johnstown Flood"? I Googled the title but I got references back to the Springsteen song or the actual flood. Looked it up on AMG and came up with a single recording of a song call "Johnstown Flood". Can anybody tell me if it's a real song or did Bruce just invent it? If it's real, can you direct me towards a recorded version.

Thanks.