The feature is rocky, extending 630 m in southwest-northeast direction and 240 m wide.

It is separated from Grod Island by a 100 m wide passage.

The island is named after the settlement of Kovach in Southern Bulgaria.

Kovach Island is located 1.17 km north of Misnomer Point, 760 m southeast of Cornwall Island and 1.08 km west of Shipot Point.

This article includes information from the Antarctic Place-names Commission of Bulgaria which is used with permission.