Editing Lake Constance (section)

=== Divisions ===
Lake Constance is located in the foothills of the [[Alps]]. The shore length of both main lakes is {{convert|273|km|mi}} long. Of this, {{convert|173|km|mi}} are located in Germany ([[Baden-Württemberg]] {{convert|155|km|mi|disp=or}}, [[Bavaria]] {{convert|18|km|mi|disp=or}}), {{convert|28|km|mi}} run through Austria and {{convert|72|km|mi}} through Switzerland.<ref>''Bodensee-Daten.'' In: Internationale Gewässerschutzkommission für den Bodensee (publ.): ''Seespiegel.'' December 2011, p. 6.</ref> If the upper and lower lakes are combined, Lake Constance has a total area of {{convert|536|km2|sqmi|abbr=on}}, the third largest lake in [[Central Europe]] by area after [[Lake Balaton]] ({{convert|594|km2|sqmi|abbr=on|disp=or}}) and [[Lake Geneva]] ({{convert|580|km2|sqmi|abbr=on|disp=or}}). It is also the second largest by water volume ({{convert|48.5|km3|cumi acre.ft|lk=out|abbr=on|disp=or}})<ref name="Gewässerschutzkommission">Uta Mürle, Johannes Ortlepp, Peter Rey, Internationale Gewässerschutzkommission für den Bodensee (publ.): ''Der Bodensee: Zustand – Fakten – Perspektiven.'' 2nd revised edition. Bregenz, 2004, {{ISBN|3-902290-04-8}}, p.&nbsp;10.</ref> after Lake Geneva ({{convert|89|km3|cumi acre.ft|abbr=on|disp=or}}) and extends for over {{convert|69.2|km|mi}} between [[Bregenz]] and [[Stein am Rhein]]. Its [[drainage basin|catchment area]] is around {{convert|11500|km2|sqmi|abbr=on}}, and reaching as far south as [[Lago di Lei]] in Italy.<ref>[http://www.hydra-institute.com/igkb/IGKB%201.2.pdf www.hydra-institute.com] {{webarchive|url=https://web.archive.org/web/20120514054950/http://www.hydra-institute.com/igkb/IGKB%201.2.pdf |date=2012-05-14 }} (pdf; 1.2&nbsp;MB)</ref>

The area of the [[Obersee (Lake Constance)|Obersee]], or Upper Lake, is {{convert|473|km2|sqmi|abbr=on}}. It extends from Bregenz to [[Bodman-Ludwigshafen]] for over {{convert|63.3|km|mi}} and is {{convert|14|km|mi}} wide between [[Friedrichshafen]] and [[Romanshorn]]. At its deepest point between [[Fischbach (Friedrichshafen)|Fischbach]] and [[Uttwil]], it is {{convert|251.14|m|ft}} deep.

[[File:Bodensee vom Pfänder (Aurtia).JPG|thumb|Lake Constance with the Island of Lindau seen from the [[Pfänder]] in 2007]]
The three small bays on the [[Vorarlberg]] shore have their own names: the Bay of Bregenz, off [[Hard, Austria|Hard]] and [[Fußach]] is the Bay of Fussach and, west of that is the Wetterwinkel. Farther west, now in Switzerland, is the Bay of Rorschach. To the north, on the Bavarian side, is the Bay of Reutin. The railway embankment from the mainland to the island of Lindau and the motorway bridge over the lake border the so-called Little Lake (''Kleiner See''), which is located between the Lindau village of Aeschach and the island.

The northwestern, finger-shaped arm of the Obersee is called Überlinger See (or Überlingersee in [[Swiss Standard German]]), or [[Lake Überlingen]]. It is sometimes regarded as a separate lake, the boundary between Lake Überlingen and the rest of the Upper Lake runs approximately along the line between the southeast tip of Bodanrück (the ''Hörnle'', which belongs to the town of Konstanz) and Meersburg. The [[Constance Hopper]] lies between the German and Swiss shores east of [[Konstanz]].

The Obersee and Untersee are connected by the [[Seerhein]].

The [[Untersee (Lake Constance)|Untersee]], or Lower Lake, which is separated from the Obersee and from its north-west arm, the Überlinger See, by the large peninsula of [[Bodanrück]], has an area of {{convert|63|km2|sqmi|abbr=on}}. It is strongly characterised and divided into different areas by [[end moraine]]s, various [[glacial snout]]s and [[medial moraine]]s. These various areas of the lake have their own names. North of [[Reichenau Island]] is the [[Gnadensee]]. West of the island of Reichenau, between the peninsula of [[Höri (Lake Constance)|Höri]] and the peninsula of [[Mettnau]] is the Zeller See (or Zellersee in Swiss Standard German), or [[Lake Zell]]. North of the peninsula and swamp land Mettnau lies the lake part Markelfinger Winkel. The [[drumlin]]s of the southern Bodanrück continue along the bed of these northern parts of the lake. South of the Reichenau, from [[Gottlieben]] to [[Eschenz]], stretches the ''Rheinsee'' (lit.: "Rhine Lake") with strong Rhine currents in places. Previously this lake part was named Lake Bernang after the village of [[Berlingen, Switzerland|Berlingen]]. On most of the maps the name of the ''Rheinsee'' is not shown, because this place is best suited for the name of the Untersee.<ref name="Seespiegel_20">[http://www.seespiegel.de/html/archiv/Artikel/Nummer20/1204_002.htm ''Der Bodensee: drei Teile, ein See.''] In: ''Seespiegel.'' Edition 20.</ref>

{{multiple image|perrow = 3|total_width=900
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|header = Lake Constance on the Swiss National Map (1:50'000)
|image1=206 Stein am Rhein.jpg
|image2=207 Konstanz.jpg
|image3=14000by9600white.svg<!--left blank-->
|image4=216 Frauenfeld.jpg
|image5=217 Arbon.jpg
|image6=218 Bregenz.jpg
|footer = 
}}