Burnjak Dam and Retention Basin

The Burnjak Dam and Retention Basin lie near Gornja Stubica, in Krapina-Zagorje County, in Hrvatsko Zagorje, in northwestern Croatia, on the northern slopes of Medvednica. The structure is a flood-control dam built across the Burnjak stream, and the lake that forms behind it is a quiet, green spot in a landscape of hills and villages.

The dam’s purpose is practical. The streams that run down from Medvednica are small in dry weather but can swell dramatically after heavy rain or snowmelt, and the settlements in the valley below, including Gornja Stubica and the spa town of Stubičke Toplice, have suffered from flooding over the years. A retention basin, a reservoir designed to hold back floodwater and release it gradually, protects the lower valley. The Burnjak structure has a capacity of around 1.8 million cubic metres, and the dam wall rises about twenty metres, built of earth and stone with concrete and steel reinforcement, which makes it one of the larger structures of its kind in Croatia. Its design is typical of retention dams, with a wide crest, a sloping face and spillways to control the flow.

For visitors, the dam offers a different view of Zagorje, one where engineering meets landscape. The lake is surrounded by woodland and meadows, and the water takes on the colours of the sky and trees. The edges are good for walking, with paths that lead along the shore and into the wooded hills, and the area attracts birds, including herons and waterfowl, so patient observers can see wildlife. In autumn the leaves turn gold and red, and in winter the lake can freeze at the edges. There are no formal visitor facilities or opening hours, so the site is simple, quiet and open to anyone who wants a walk.

Gornja Stubica is rich in other sights. The area is closely associated with the Peasants’ Revolt of 1573 and its leader, Matija Gubec, remembered at the Oršić Castle and Museum of the Peasants’ Revolt and by the Gubec Linden, a famous old tree. The Stubički Golubovec Castle, with its large park, the Dišeća Starina Ethno Village and the Rudolf Perešin Memorial Park make a varied day. A visit to the dam can be combined with these places, and the surrounding hills offer cycling and hiking routes.

Bring water, sturdy shoes and, in summer, insect repellent. The place suits walkers, photographers, birdwatchers and people interested in how landscapes are managed. Early morning and late afternoon give the best light and the quietest atmosphere.