Zugersee

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The Lake Zug ( German: Zugersee ) is one of the minor Swiss lakes, on the outskirts of the Alps and north of Lake Lucerne. Probably at some former date it was connected by means of the Lake Lauerz and the plain of Brunnen with Lake Lucerne. At present it is formed by the Aa, which descends from the Rigi and enters the southern extremity of the lake. The Lorze pours its waters into the lake at its northern extremity, but 1¾ mi further west issues from the lake to pursue its course towards the Reuss.

For the most part the lake is in the Canton of Zug, but the southern end is, to the extent of about ten square kilometres, in that of Schwyz, while the Canton of Lucerne claims about two square kilometres to the north of Immensee. Toward the south-west extremity of the lake the Rigi descends rather steeply to the water's edge, while part of its east shore forms a narrow level band at the foot of the 1,583 metres (5,194 ft) high Rossberg, and the Zugerberg.