Jamno (lake)

Jamno (Jamunder See) is a lake in northern Poland (in West Pomeranian Voivodeship), close to the Baltic Sea. It is divided from the sea by a spit, on which lie the resorts of Mielno and Unieście.

Jamno covers an area of over 22 km2; its maximum length is 10.1 km and its maximum breadth is 3.4 km. Its greatest depth is 3.9 m. The lake is popularly used for sailing.

An examination of this lake from 2007 shows it is a brackish coastal lagoon that at that time was heavily polluted by sewage from the nearby city of Koszalin.