Obersee (Lake Zurich)
| Obersee | |
|---|---|
Zürichsee ("lower lake", left) and Obersee (right) divided by the Hurden Peninsula (Säntis in the background) | |
Obersee Obersee Obersee Obersee | |
| Coordinates | 47°12′N 8°48′E / 47.2°N 8.8°E |
| Lake type | Glacial lake |
| Primary inflows | Linth (Linthkanal), Jona, Wägitaler Aa, Schmerikoner Aa |
| Primary outflows | Limmat |
| Basin countries | Switzerland |
| Max. length | 10.5 km (6.5 mi) |
| Max. width | 2.5 km (1.6 mi) |
| Surface area | 20.8 km2 (8.0 sq mi) |
| Average depth | 23 m (75 ft) |
| Max. depth | 48 m (157 ft) |
| Water volume | 0.47 km3 (0.11 cu mi) |
| Residence time | 10 weeks |
| Surface elevation | 406 m (1,332 ft) |
| Islands | Heilig Hüsli island |
| Location | |
Interactive map of Obersee | |
The Obersee (Swiss Standard German pronunciation: [ˈoːbərzeː] ⓘ, lit. 'Upper Lake') is the smaller of the two parts of Lake Zurich (Zürichsee), located upstream in the cantons of St. Gallen and Schwyz in Switzerland. It is almost completely separated from the lower (or main) part of Lake Zurich by the Hurden Peninsula, an Ice Age glacial moraine.
The lake is home to several species of birds, amphibians, fish and invertebrates. There are several protected areas (reeds, bogs, fens) along the lake's shores. Located in the Prealps (German: Voralpen), the lake is also a popular recreational area.