Lac de Bonnal is a lake between Haute-Saône and Doubs, France.
| Lac de Bonnal | |
|---|---|
  Lac de Bonnal | |
| Location | Haute-Saône, Doubs |
| Coordinates | 47°31′N 6°22′E / 47.517°N 6.367°E |
| Type | natural |
| Primary inflows | Ognon |
| Basin countries | France |
| Surface elevation | 254 m (833 ft) |
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