Pískovna Hrádek
Small sand-pit lake about 7 km from Pardubice toward Hradec Králové, used for training and casual dives. Maximum depth is about 10 m, with an aircraft wreck at roughly 6.5 m, a Škoda 100 car body at 4.5 m and an instructor training platform. Visibility averages about 2 m and the muddy bottom reduces it to near zero in places, though the northern grass carpet keeps it clearer. A road leads to the water and a dive school in Hrádek fills cylinders.
depth: 0–10 m