The
Leiblach is a 33 km long
tributary of
Lake Constance and the
Rhine River. Its source is near the German municipality of
Heimenkirch, flowing to the southwest. Near the Austrian town of
Hohenweiler, the river joins a small tributary, the Rickenbach. This tributary forms a part of the Austrian-German border, and below the confluence the border continues to follow the Leiblach, eventually emptying into Lake Constance between the German town of
Lindau and the Austrian town of
Lochau.