Section 14B. No person obtaining an additional water power or water supply by the doing of any work contemplated by sections one to fourteen B, inclusive, shall gain a prescriptive right to the use thereof, nor be entitled to any compensation for the taking thereof under said sections by the removal of any dam or flashboards or by the changing of the height or dimensions of any dam. No water power may be developed in a reclamation district organized under this chapter except by vote of the district and approval by the board.