text: Yes,  The official name is Betty Pond. It is privately owned. I know this because I am the Owner. 
  
  The official Name was Registered pursuant to Massachusetts Law, and has been Certified under MassDEP-DCR, as Voted by Town of Templeton MA Board of Selectmen. 
  
  Can be confirmed at the Town Assessors official map AxisGis, ArcGIS, and MassGis Official State Map.  
  
  Note in the "search for a location" entry field for the map you may need to  type the prior errant name (Brazell Pond or Brazell Pond Dam) then click on the search result and the map will go to the location showing the map view of the correct Official Betty Pond /Dam.  (this will happen until the search engine is also updated).
  
  I will try to update on 'this' unofficial map if I ever have time to learn how.