Alajärv
Alajärv
Location	Rõuge Parish, Võru County
Coordinates	57°41′35″N 26°56′37″E / 57.6930924°N 26.9435114°E / 57.6930924; 26.9435114
Basin countries	Estonia
Max. length	240 meters (790 ft)
Surface area	2.2 hectares (5.4 acres)
Average depth	1.3 meters (4 ft 3 in)
Max. depth	4.5 meters (15 ft)
Shore length1	810 meters (2,660 ft)
Surface elevation	176.4 meters (579 ft)
1 Shore length is not a well-defined measure.

Alajärv (also known as Viitina Alajärv or Kose järv) is a lake in Estonia. It is located in the village of Viitina in Rõuge Parish, Võru County, close to the border with Latvia.

The lake has an area of 2.2 hectares (5.4 acres). The lake has an average depth of 1.3 meters (4 ft 3 in) and a maximum depth of 4.5 meters (15 ft). It is 240 meters (790 ft) long, and its shoreline measures 810 meters (2,660 ft).^[1]

• List of lakes of Estonia