[3] Lake Liepāja is a pod-shaped shallow eutrophic coastal lake with extensive areas of emergent vegetation (Phragmites, Typha, Scirpus, Sparganium), surrounded by seasonally flooded meadows and arable land.

Since 2004 the lake has been included on the European Union Natura 2000 protected territories list.

In 2008, a nature protection plan for Lake Liepāja was developed by the Grontmij Carl Bro company.

[4] Lake Liepāja has 13 islands, the most notable of which are Atteku(-as), Zirgu, Pērkona, Putnu (kalva) and Cionas.

The Ālande, Bārta, Otaņķe (Brūnupe), Līčupe, Orbupe, and Dorupe rivers flow into the lake.