text: Umm wow. Yeah, there is something weird going on here. It looks like the waterways in this area were imported from and NHD data set and the import may have been executed poorly.
  
  Basically when you change the name, it was setting the name on this relation which includes random members from various bodies of water: http://www.openstreetmap.org/relation/117040
  
  I'll try to remember to take a closer look and hopefully fix some things later tonight.