Editing Rhine (section)

==== Seerhein ====
{{Main|Seerhein}}
[[File:Konstanz Blick vom Münsterturm.jpg|thumb|Distance markers along the Rhine indicate distances from this bridge in [[Konstanz]]]]
[[File:Rheinkilometer Loreley.JPG|thumb|right|upright|The 555&nbsp;km marker downstream from the [[Lorelei]]]]
The [[Seerhein]] is only {{Convert|4|km|mi|sp=us}} long. It connects the [[Obersee (Lake Constance)|Obersee]] with the 30&nbsp;cm lower [[Untersee (Lake Constance)|Untersee]]. Distance markers along the Rhine measure the distance from the bridge in the old city center of Konstanz.

For most of its length, the Seerhein forms the border between Germany and Switzerland. The exception is the old city center of Konstanz, on the Swiss side of the river.

The Seerhein emerged in the last thousands of years, when erosion caused the lake level to be lowered by about 10 meters. Previously, the two lakes formed a single lake, as the name still suggests.