Bandak

{{for|the village in Iran|Bandak, Iran}}

{{short description|Lake in Telemark, Norway}}

{{Infobox body of water

|name = Bandak

|native_name =

|native_name_lang =

|other_name =

|image = 195. Thelemarken, Udsigt over Bandaksvand fra den nye Vei - NB bldsa AL0195.jpg

|caption = Bandak lake about 1890 {{credit|Axel Lindahl}}

|image_bathymetry =

|alt_bathymetry =

|caption_bathymetry =

|pushpin_map = Telemark#Norway

|pushpin_label_position = bottom

|pushpin_label =

|pushpin_map_caption = Location of the lake

|coordinates = {{coord|59.43865|8.03582|region:NO_type:waterbody|display=inline,title}}

|location = Tokke and Kviteseid,
Telemark

|type = glacial lake

|inflow = Lårdalsåi and Tokke

|outflow = Strauman

|catchment = {{convert|2545.7|km2|sqmi|abbr=on}}

|basin_countries = Norway

|date-built =

|date-flooded =

|length = {{convert|27|km|mi|abbr=on}}

|width = {{convert|1.9|km|mi|abbr=on}}

|area = {{convert|26.77|km2|sqmi|abbr=on}}

|depth =

{{convert|121|m|ft|abbr=on}}

|max-depth = {{convert|325|m|ft|abbr=on}}

|volume = {{convert|3.24|km3|cumi|abbr=on}}

|residence_time =

|shore = {{convert|60.16|km|mi|abbr=on}}

|elevation = {{convert|72|m|ft|abbr=on}}

|frozen =

|islands = Bandaksøy

|cities =

|reference = NVE{{Cite web |title=Innsjødatabase |url=https://temakart.nve.no/link/?link=innsjodatabase |access-date=2023-01-10 |website=nve.no |language=no}}

}}

Bandak is a lake in the municipalities of Kviteseid and Tokke in Telemark county, Norway. The lake, which is part of the Telemark Canal route, belongs to the Skien watershed. The river Tokke flows into the lake, and the outlet is via the river Strauman, which flows to the lake Kviteseidvatn.{{Cite encyclopedia |title=Bandak |encyclopedia=Store norske leksikon |publisher=Kunnskapsforlaget |url=https://snl.no/Bandak |date=2022-11-28 |editor-last=Lundbo |editor-first=Sten |language=no |accessdate=2023-01-10}}

File:Bandak, west side at Dalen.jpg

The lake has an area of {{convert|26.8|km2}}. The average depth of the lake is {{convert|121|m|ft|abbr=on}} which is about {{convert|49|m|ft|abbr=on}} below sea level. The deepest part of the lake reaches {{convert|325|m}} which makes it the eighth deepest lake in Norway. The {{convert|27|km|adj=on}} long lake measures about {{convert|2|km}} at the widest. The catchment area for the lake is about {{convert|2545.7|km2}}.

The Tokke Hydroelectric Power Station utilizes the hydraulic head from the nearby lake Vinjevatn to Bandak of about {{convert|394|m}} to generate electricity. It is one of northern Europe's largest power plants with a production of some {{convert|430|MW|lk=on}}. The plant produces an average annual production of {{convert|2140|GWh|lk=on}}.{{Cite encyclopedia |title=Tokke kraftverk |encyclopedia=Store norske leksikon |publisher=Kunnskapsforlaget |url=https://snl.no/Tokke_kraftverk |date=2021-01-15 |editor-last=Rosvold |editor-first=Knut A. |language=no |accessdate=2023-01-10}}