It is situated on the administrative territory of 16 communes, which include 53 localities fully and 8 others partially.

The Park features 3 resorts: Boga, Fântânele, and Vârtop.

[3] The Apuseni Natural Park with an area of 75,784 ha (187,270 acres)[4] was declared natural protected area by the Law Number 5 of March 6, 2000 (published in the Monitorul Oficial of Romania, Number 152 of April 12, 2000)[5] and represents a mountainous area (mountain peaks, cirques, caves, valleys, karst areas, forests, and pastures), with flora and fauna specific to the Western Carpathians.

Located at an altitude of 1,050 m (3,440 ft), the reservoir covers an area of 826 ha (2,040 acres) and has a volume of 225–250 million cubic metres (0.054–0.060 cu mi) of water.

From the reservoir, the water is diverted through a 8.475 km (5.266 mi) tunnel to the turbines of the Mărișelu Hydroelectric Power Station.