Obersee (Lake Constance)

Upper Lake Constance (Obersee)
View over Lake Constance's Obersee from Winterstaude mountain at dusk
Upper Lake Constance (Obersee) Show map of Canton of St. Gallen Upper Lake Constance (Obersee) Show map of Switzerland Upper Lake Constance (Obersee) Show map of Baden-Württemberg Upper Lake Constance (Obersee) Show map of Germany Upper Lake Constance (Obersee) Show map of Austria Upper Lake Constance (Obersee) Show map of Alps
Location	Tripoint of Germany, Austria and Switzerland
Coordinates	47°37′N 9°26′E / 47.61°N 09.44°E / 47.61; 09.44
Primary inflows	Alpine Rhine, Bregenzer Ach, Argen, Alter Rhein (Fußacher Durchstich), Schussen, Dornbirner Ach, Seefelder Aach, Rotach, Stockacher Aach and smaller streams
Primary outflows	Seerhein
Max. length	63 kilometres (39 mi)[1]
Max. width	14 kilometres (8.7 mi)[1]
Surface area	472 square kilometres (182 sq mi)[2]
Average depth	101 metres (331 ft)[2]
Max. depth	251 metres (823 ft)[2]
Water volume	47.6 cubic kilometres (11.4 cu mi)[2]
Shore length1	186 kilometres (116 mi)[2]
Surface elevation	395.33 metres (1,297.0 ft)
Islands	Lindau, Mainau
Settlements	Überlingen, Meersburg, Friedrichshafen, Lindau, Bregenz, Rorschach, Konstanz
1 Shore length is not a well-defined measure.

The Obersee (English: Upper Lake), also known as Upper Lake Constance, is the much larger of the two parts of Lake Constance, the other part being the Untersee (English: Lower Lake). The two parts are separated by the Bodanrück peninsula. The narrow, northwestern branch of Obersee is also called Überlinger See (English: Lake Überlingen).