From the longer Wikipedia page 
Salto Department (Spanish pronunciation: [ˈsalto]) is a department of the northwestern region of Uruguay. It has an area of 14,163 km2 (5,468 sq mi) and a population of 124,878. Its capital is the city of Salto. It borders Artigas Department to its north, Paysandú Department to its south, the departments of Rivera and Tacuarembó to its east and has the Río Uruguay flowing at its west, separating it from Argentina.