law: Railways Act, 1989
  20. Power of Central Government to give directions for
  
  safety. 
  Notwithstanding anything contained in any other law, the Central
  
  Government may, if it is of the opinion that any work undertaken or may be
  
  undertaken, is likely to alter or impede the natural course of water flow or
  
  cause an increase in the volume of such flow endangering any cutting,
  
  embankment or other work on a railway, issue directions in writing to any
  
  person, officer or authority responsible for such work to close, regulate or
  
  prohibit that work.