Kopačnica consists of scattered farms along the valley of Kopačnica Creek and its tributaries: Podplečica Creek to the northwest, which flows through a canyon in the hamlet of Jezbirc, as well as Podkovščica Creek and Pohovica Creek in the Komajs Gorge to the west, below Stara Oselica. The road to Cerkno passes through the Podplečica Valley, and a road to Leskovica through the Kopačnica Valley to the northeast. Surrounding elevations include Makovc Hill to the east, Mah Hill to the north, Mount Ermanovec to the south, and Vrhovec Hill to the southwest. The village has hayfields and forested land, and some tilled fields in the lower area where the valleys join.
Name
The name Kopačnica is believed to derive from the verb kopati 'to dig' and may be related to the noun kopačina 'field cultivated by digging'. In the pastthe village was known as Kapatschnitz in German.