Hlučín – štěrkovna
A gravel-pit lake of about 140 ha at Hlučín, around 5 km from Ostrava, popular with swimmers on the north shore. The bottom is mostly sediment, shores are overgrown, visibility 1–2 m, and a 1–1.5 m wels catfish was reported in May 2026. The lake is a fishing reserve and the central island is a bird nesting site that must not be entered.
Tiefe: 0–6 m