Bovilla Lake

The Bovilla reservoir is a 4.6 square kilometres reservoir in Albania, approximately 9 miles northeast of Tirana and southeast of Kruja, within Mount Dajt National Park. It provides most of the drinking water for Tirana.The reservoir is formed by a dam of the river Tërkuzë, a tributary of the Ishëm. The Tërkuzë has its source to the east of the outer chain of the coastal mountain range, running through the deep Shkallë e Bovillës canyon between Mount Maja e Gomtitit and Mount Mali i Bjeshit.

Source: Wikipedia