Barbora Lake, reservoir in Hrob, Czech Republic

Barbora Lake is an artificial lake in the Most Basin, about 6 km west of Teplice, spanning the cadastral areas of Oldřichov u Duchcova and Verneřice u Hrobu. The flooded former open-pit coal mine covers 55 ha and reaches depths of up to 60 m. It is fed by water from the Bouřlivec stream and has clear spring water.

Brown coal was mined underground at the Barbora shaft near Oldřichov before open-pit extraction began on the same site in 1957. After the pit was worked out, a residual hollow of over 70 ha remained; it was flooded with mine water in the 1970s, creating a 55 ha reservoir up to 60 m deep. Water from the Bouřlivec stream was later led in to keep it flowing.

The lake's name comes from the Barbora deep coal mine that once operated near Oldřichov. Today the water hosts training for sport divers, sailing and windsurfing, and in summer it draws visitors from the Teplice and Duchcov regions.

Barbora Lake lies about 6 km west of Teplice, north of the village of Oldřichov and southwest of Košťany, in the Most Basin. The water area falls in the cadastral territories of Oldřichov u Duchcova and Verneřice u Hrobu. The flooded quarry was later connected to flow-through water from the nearby Bouřlivec stream.

The lake was not pumped dry and filled deliberately: after the Barbora pit closed, it flooded on its own with mine water in the 1970s, and later a feed from the Bouřlivec stream was added to keep it flowing. The flooded void covered 55 ha and reaches depths of up to 60 m.