Vyerkhnyadzvinsk or Verkhnedvinsk, previously known as Drysa or Drissa until 1962, is a town in Vitebsk Region, Belarus. It serves as the admiā¦Vyerkhnyadzvinsk or Verkhnedvinsk, previously known as Drysa or Drissa until 1962, is a town in Vitebsk Region, Belarus. It serves as the administrative center of Vyerkhnyadzvinsk District. It is located at the confluence of the Drysa River and the Daugava River. Its population in 2009 was 7,600. As of 2024, it has a population of 6,870.