| Melchsee | |
|---|---|
 | |
  Melchsee  Melchsee  Melchsee  Melchsee  Melchsee | |
| Location | Obwalden |
| Coordinates | 46°46′21″N 8°16′21″E / 46.77250°N 8.27250°E |
| Type | reservoir, natural lake, oligotrophic |
| Catchment area | 5.9 km2 (2.3 sq mi) |
| Basin countries | Switzerland |
| Surface area | 54 ha (130 acres) |
| Max. depth | 18 m (59 ft) |
| Surface elevation | 1,891 m (6,204 ft) |
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Melchsee is a lake in the canton of Obwalden, Switzerland. It lends its name to the resort Melchsee-Frutt, in the municipality of Kerns. At an elevation of 1891 m, its surface area is 54 ha (130 acres).