law: Indian Easements Act, 1882
  29. Increase of easement
  The dominant owner cannot, by merely altering or adding to the
  
  dominant heritage, substantially increase an easement.
  Where an easement has been granted or bequeathed so that its
  
  extent shall be proportionate to the extent of the dominant heritage, if the
  
  dominant heritage is increased by alluvion, the easement is proportionately
  
  increased, and if the dominant heritage is diminished by diluvion, the easement
  
  is proportionately diminished.
  Save as aforesaid, no easement is affected by any change in the
  
  extent of the dominant or the servant heritage.
  Illustrations
  (a) A, the owner of a mill, has acquired a prescriptive right to
  
  divert to his mill part of the water of a stream. A alters the machinery of his
  
  mill. He cannot thereby increase his right to divert water.
  (b) A has acquired an easement to pollute a stream by carrying
  
  on a manufacture on its banks by which a certain quantity of foul matter is
  
  discharged into it. A extends his works and thereby increase the quantity
  
  discharged. He is responsible to the lower riparian owners for injury done by
  
  such increase.
  (c) A, as the owner of a farm, has a right to take for the
  
  purpose of manuring his farm; leaves which has fallen from the trees on B's
  
  land. A buys a field and unites it to his farm. A is not thereby entitled to
  
  take leaves to manure this field.