| Gnadensee | |
|---|---|
 In the upper part of the photograph the elongated Gnadensee runs towards the west and ends in the "Markelfinger Winkel" | |
  Gnadensee | |
| Location | Baden-Württemberg |
| Coordinates | 47°42′30″N 09°03′30″E / 47.70833°N 9.05833°E |
| Primary inflows | Nägelriedgraben |
| Primary outflows | Rheinsee |
| Max. length | 11.1 kilometres (6.9 mi) |
| Max. width | 1.9 kilometres (1.2 mi) |
| Surface area | 13 kilometres (8.1 mi)2 |
| Max. depth | 19 metres (62 ft) |
The Gnadensee is part of Lower Lake Constance (German: Untersee), the western part of the lake.