No person shall by means of any such leave, draw the water from any millpond of another, existing at the time of such leave, or do anything in conflict with any vested right in any waterworks erected on such watercourse.
Such leave not to affect vested rights
Va. Code Ann. § 62.1-124, under Chapter 9. Mills, Dams and Certain Other Works on Watercourses..
Va. Code Ann. § 62.1-124