The Mrežnica River is one of the most beautiful waterways of the Croatian karst. As a left tributary of the Korana River, it stretches for 64 kilometers from its source near the town of Slunj to its confluence with the Korana in Karlovac.

Mrežnica is truly a sight to behold. Throughout its entire course, the river cascades over numerous waterfalls and tufa barriers, some say more than a hundred! They add a unique charm to the river and attract locals and visitors alike, who enjoy its refreshing clear waters. It is also a paradise for kayaking and rafting enthusiasts, as well as other recreational activities.

The river is a perfect habitat for many fish species, especially in the salmonid family. This includes the Danube barbel, grayling, spined loach, cactus roach and similar Cyprinides, as well as the brown trout and European bullhead. Apart from fish, the river supports numerous other species, like the European tree frog, otter, thick-shelled river mussel, stone crayfish, common kingfisher and many others. For this reason, the entire Mrežnica River is part of the Natura 2000 Network.

Recognizing the importance of preserving the Mrežnica River, The Nature Conservancy teamed up with the Public Institution Natura Viva and the Karlovac County to establish two protected areas on the river. Through support of the local community, we can protect the river and create new opportunities that benefit the people and nature.