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The Seefelder Aach is a river in the districts of Sigmaringen and Bodenseekreis, Tübingen region, southern Baden-Württemberg, Germany. It is approximately 55 kilometres long and flows into Lake Constance. It has a catchment area of 279 km² and is part of the Rhine river system. It starts as Salemer Aach and becomes the Seefelder Aach after the conjunction with the Deggenhauser Aach, further down from Salem.[1] The upper part – near Aach-Linz – it is also colloquially called Linzer Aach or Hintere Aach.[2][3]

Seefelder Aach
Salemer Aach, Linzer Aach
Seefelder Aachmündung.JPG
Physical characteristics
 ⁃ locationBetween Alberweiler and Herdwangen in Herdwangen-Schönach
 ⁃ elevation670 m (2,200 ft)
 ⁃ location
Next to Seefelden in Uhldingen-Mühlhofen into Lake Constance
 ⁃ coordinates
47°43′59″N 9°13′35″E / 47.7331°N 9.2264°E / 47.7331; 9.2264Coordinates: 47°43′59″N 9°13′35″E / 47.7331°N 9.2264°E / 47.7331; 9.2264
 ⁃ elevation
395 m (1,296 ft)
Length54.7 km (34.0 mi) [1]
Basin size279 km2 (108 sq mi) [1]
Basin features
ProgressionRhineNorth Sea
 ⁃ leftFurtbach, Erlengraben, Aubach, Deggenhauser Aach, Gießbach
 ⁃ rightHerdenbach, Wäschbach, Torpenbach, Nellenflurb


  1. ^ a b c Map services of the Baden-Württemberg State Office for the Environment, Survey and Conservation (Landesanstalt für Umwelt, Messungen und Naturschutz Baden-Württemberg)
  2. ^ „Hintere Aach“ e.g. in „DTK50 BW“ (dig. topogr. Karte (digital topographic map); see there at the reach at Ahausen (Bermatingen-)Ahausen), however here only called „Aach“, and also in „Der Große Weltatlas“ (Bertelsmann; 1992)
  3. ^ „Hinter Aach“ (the missing „e“ may be a typo) for example in „Der Große Falk-Atlas“ (2003/04 – Deutschland/Europa)