Údolní nádrž Nýrsko, reservoir in Nýrsko, Czech Republic

Údolní nádrž Nýrsko is a drinking-water reservoir on the Úhlava south of Nýrsko, held by a 36.2 m high and 320 m long rockfill dam sealed with reinforced concrete on the water side. The dam stands in the Úhlava gorge between the Rantscher and Kreuzberg ridges of the Künische Gebirge, and the water extends about two and a half kilometres south to Hamerský Dvůr.

The reservoir was completed in 1969, when the Úhlava valley was flooded to create a reliable drinking water supply for the region. This permanently replaced the original river course and changed the shape of the land.

The reservoir serves as a place where local people find connection with nature and quiet recreation. Marked trails allow visitors to walk along the water's edge, while swimming and boating are restricted to protect the water supply that the community depends on.

Marked trails run along the shore and allow visitors to walk around the water at a comfortable pace. Swimming and boating are not allowed, as the water is used as a drinking water source.

Before the valley was flooded, people living there had to leave their homes and resettle elsewhere. The remains of those former settlements now lie beneath the surface of the water.