Gradinsko Lake at Plitvice: The Upper Lakes’ Mirror

The park’s most famous images come from the Lower Lakes — the canyon boardwalks, Veliki Slap, the turquoise water at close range. But among photographers and visitors who have explored the Upper Lakes, Gradinsko jezero occupies a special place: a wide, calm lake whose surface reflects the surrounding beech and fir forest with extraordinary clarity, fed by one of the park’s most impressive waterfalls, and set in a forested landscape that is quieter and more contemplative than the dramatic canyon below. This is the Upper Lakes’ mirror.

Facts and Character

Gradinsko jezero is the tenth lake in the system from the top (counting from Prošćansko jezero), situated at an altitude of approximately 554 metres. At 8.1 hectares it is one of the larger Upper Lakes; at 10 metres maximum depth it is shallower than Kozjak or Prošćansko but still genuinely lake-like in character — wide open, with a broad calm surface that produces reflections in ways that the narrower or more active lakes cannot.

The lake’s name derives from its position adjacent to a gradina — an old Croatian word for a hilltop fortification or defensive position — though no visible fortification remains at the site today.

Gradinsko is also a nesting place for ducks, which can be seen on the lake edges and in the reed beds along the shoreline. Combined with the bird life typical of the Upper Lakes (herons, kingfishers, divers), the lake has a notable wildlife character that complements its visual appeal.

The Waterfalls Around Gradinsko

Gradinsko receives water from two main sources:

Veliki Prštavac — the most visually dramatic inflow. This waterfall drops approximately 28 metres from Galovac Lake above, fanning out in a wide cascade as it enters Gradinsko. Viewed from the boardwalk on the Gradinsko shoreline, with the lake surface in the foreground and the waterfall visible across the water, this is one of the park’s finest compositions. See our Veliki Prštavac guide for full detail.

Galovački Buk — a 16-metre waterfall also fed from Galovac via Milino jezero, dropping to Gradinsko from a different direction. Less spectacular than Veliki Prštavac individually, but contributing to the impression of Gradinsko as a lake surrounded by active water on multiple sides.

Burgeti exit — at the lower end of Gradinsko, water flows over the Burgeti barriers into the small Burgeti pond before continuing to Lake Kozjak. This section is less dramatic but completes the sense of Gradinsko as a transitional lake — receiving dramatic inflows from above and releasing water more gently below.

Why Gradinsko Produces the Park’s Best Reflections

Several factors combine to make Gradinsko the Upper Lakes’ premier reflection lake:

Width and calm. At 8.1 hectares, Gradinsko is wide enough that the full extent of the surrounding forest is visible on the water surface. Its relatively sheltered position reduces wind exposure compared to the more open Kozjak.

Forest character. The surrounding beech and silver fir forest rises steeply on both sides. In spring and summer, vivid green reflects in the blue-green water. In autumn, the beech turns gold and copper — and Gradinsko is one of the first lakes where the autumn colour reflections become spectacular, typically from mid-October.

Low-angle views. The boardwalk elevation at Gradinsko is close to the water surface, enabling low-angle photography of reflections in a way that elevated viewpoints cannot produce.

How to Reach Gradinsko

Gradinsko is reached via the Upper Lakes section of the park:

Via Route H from Entrance 2: After entering at Entrance 2, take the first boat (P1 to P2), then walk south through the Upper Lakes boardwalk. Gradinsko is approximately 45–60 minutes from the P2 terminal. This is the optimal approach — early morning, quieter, with the best light on the lake.

Via Route C from Entrance 1: After the boat crossing from the Lower Lakes (P3 to P2), follow the Upper Lakes boardwalk north. Gradinsko is reached approximately 30–45 minutes from P2. This approach typically arrives at Gradinsko later in the day (mid-to-late morning) than Route H.

Timing: The best light on Gradinsko for reflections is early morning in calm conditions. Arriving via Entrance 2 at opening time gives the highest probability of still water and good reflections.

Gradinsko in Autumn

The autumn colour peak at Gradinsko is among the most striking anywhere in the park. The beech trees surrounding the lake turn vivid gold and copper in mid-October, and their reflections in the calm lake surface produce a landscape that experienced photographers specifically travel to Plitvice to capture. Combined with the Veliki Prštavac waterfall framed in autumn foliage, the Gradinsko section of the Upper Lakes in October is the park’s finest single photography location.

Practical Notes

• Gradinsko is on all routes that include the Upper Lakes: C (from Entrance 1), H (from Entrance 2), and K.
• It is not accessible without the Upper Lakes section — Route A and Route B do not reach Gradinsko.
• The boardwalk on Gradinsko’s shoreline can be narrow in sections — keep right and be patient when meeting oncoming visitors.