| Lake Biel | |
|---|---|
| Lake Bienne Bielersee (German) Lac de Bienne (French) | |
 | |
  Lake Biel  Lake Biel  Lake Biel  Lake Biel | |
| Location | Canton of Bern |
| Coordinates | 47°5′N 7°10′E / 47.083°N 7.167°E |
| Catchment area | 8,305 km2 (3,207 sq mi) |
| Basin countries | Switzerland |
| Max. length | 15 km (9.3 mi) |
| Max. width | 4.1 km (2.5 mi) |
| Surface area | 39.3 km2 (15.2 sq mi) |
| Max. depth | 74 m (243 ft) |
| Water volume | 1.12 km3 (910,000 acre⋅ft) |
| Residence time | 58 days |
| Surface elevation | 429 m (1,407 ft) |
| Islands | St. Peter's Island |
| Settlements | Biel/Bienne (see list) |
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Lake Biel or Lake Bienne (German: Bielersee; French: Lac de Bienne [lak də bjɛn]) is a lake in western Switzerland. Together with Lake Morat and Lake Neuchâtel, it is one of the three large lakes in the Jura region of Switzerland. It lies on the language boundary between German and French speaking areas.