The ferry dock in Molos
|Primary outflows||no surface outflow|
|Max. length||7.9 km (4.9 mi)|
|Max. width||5.4 km (3.4 mi)|
|Surface area||19.4 km2 (7.5 sq mi)|
|Average depth||4.5 m (15 ft)|
|Max. depth||11 m (36 ft)|
|Surface elevation||470 m (1,540 ft)|
|Settlements||Ioannina and Perama|
Lake Ioannina (Greek: Λίμνη Ιωαννίνων Limni Ioanninon), also Pamvotida (Greek: Παμβώτιδα) or Pamvotis (Greek: Παμβώτις) is the largest lake of Epirus, located in the central part of the Ioannina regional unit in northern Greece. Ioannina to the west and the town of Perama to the north are urban settlements fringing the lake while the remaining of its periphery is composed of farmland. The lake features small fishing ports and a boating port. There is a regular boat service to the Ioannina Island. The Greek National Road 6 surrounds the northern half of the lake.
Lake Ioannina is situated at 470 m elevation, south of the Mitsikeli mountains. It is fed by several small rivers. It has no surface outflow, but it is drained through karstic sinkholes towards the rivers Arachthos, Louros and Kalamas. In 1960 a tunnel and ditch were constructed that drain from the northern end of the lake to the river Kalamas. The small inhabited Ioannina Island, where Ali Pasha was hiding during the last days of his reign, is situated near the northern shore.
Urbanisation and pollution are threatening the lake ecosystem, home to small mammals, waterbirds and a rich fish and crustacean fauna. Eutrophication results in algal blooms in summer. Lake Ioannina is home to Tsima (Τσίμα), a species of fish endemic to the lake. Two bryozoan species have recently been reported from the lake.
The State General Laboratory and the Department of Hygiene and Epidemiology, University of Ioannina, Ioannina Region notified the results of analysis of samples from lake Pamvotis in order to ascertain the reasons that led to the death of a host of fish. As revealed by the results, the lake is impaired by pollutants from sewage, which significantly exceed permissible limits. According to what was said by the Head of State General Laboratory Department of Ioannina Anastasios Tsongas, the effluent is the same quality as those that led to biological treatment, with the difference being that these were channeled directly to the lake. 
- The name Pamvotis first appears in the 12th century commentary on the Odyssey of Eustathius of Thessalonica. ed. G. Stallbaum, vol. I, p. 121, line 24.
- Romero, José R. (2002). "Seasonal water quality of shallow and eutrophic Lake Pamvotis, Greece: implications for restoration". Hydrobiologia 474: 91–105. doi:10.1023/a:1016569124312.
- J.A. Massard & G. Geimer, 2008. Occurrence of Plumatella emarginata Allman, 1844 and P. casmiana Oka, 1908 (Bryozoa, Phylactolaemata) in Lake Pamvotis (Ioannina, Greece). Bulletin de la Société des Naturalistes luxembourgeois, 109: 133-138.
- Franz X. Bogner & Georg Pilidis: Lake of Ioannina - Limni Pamvotis. Ioannina, 2010, ISBN 978-960-233-199-6 (bilingual book).
- Photos of Lake Pamvotida, Ioannina by Dimitrios Sioutis
- Ioannina on GTP Travel Pages (in English and Greek)
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