The border with the Kvarner region is defined by the divide between the drainage basins of the Black Sea and of the Adriatic Sea. Its southern border with Lika is not clearly defined but most scholars consider it to be the Jasenak – Novi Vinodolski road and people of Jasenak consider themselves to be somewhere between Gorski Kotar and Lika. To the north, the Kupa River is the border between Gorski Kotar and Slovenia's White Carniola region.