The Dobra, flowing east of Skrad and ending in the attractive Gojačka Dobra in Karlovac County, is second largest river in Gorski kotar.
In its full course it grows out of several minor source branches that are joined by Kamačnik, in the vicinity of Vrbovsko. All along the river valley there is an alternation of widenings and narrow gorges, which makes it especially interesting for practicing adrenaline sports such as rafting and canoeing.