Obersee (Kisslegg)

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Kißlegg Obersee with lido - panoramio.jpg
Geographical location Germany
district Ravensburg
Tributaries from Immenrieder Ach
Drain via Zellersee and Wolfegger Ach in Schussen
Places on the shore Kisslegg
Location close to the shore Ravensburg
Coordinates 47 ° 47 '56 "  N , 9 ° 52' 48"  E Coordinates: 47 ° 47 '56 "  N , 9 ° 52' 48"  E
Altitude above sea level 642  m above sea level NHN
surface 25.3 ha
volume 1,753,000 m³
Maximum depth 15.6 m
Middle deep 6.9 m
Catchment area 2.445 km²


Landscape protection area , FFH area

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The Obersee is a body of water in the area of the municipality of Kißlegg in Baden-Württemberg in the district of Ravensburg in Germany.


The approximately 25  hectare (ha) large Obersee naturally belongs to the Westallgäu hill country . It is located north of the town center at an altitude of 642  m above sea level. NHN .


The Obersee , which was formed towards the end of the Würm Ice Age 16,000 years ago, is now used as a fishing lake. Due to its sometimes poor water quality, the lake was included in the “Action Program for the Rehabilitation of Upper Swabian Lakes” of the Tübingen Regional Council.


The catchment area of the Obersee is 2,445 ha. With an area of ​​25.3 ha and an average depth of 6.9 m (max. Depth = 15.6 m), the volume of the lake is around 1,753,000 cubic meters.
The lake is mainly fed via the Immenrieder Ach , the drainage takes place via the Zellersee and the Wolfegger Ach in the Schussen .


Annual average of plant nutrients and other trophy indicators
year 1986 1992 1993 1998 * 2002 2006 * 2008
Total PO 4 - phosphorus (µg / l) 150 118 113 103 137 80 96
Chlorophyll a (µg / l) 37 32 29 25th 37
Chlorophyll a peak (µg / l) 155 83 79 75 126
total inorganic nitrogen (mg / l) 1.33 1.26 1.59 1.11
Viewing depth (m) 1.1 1.0 1.0 1.3 1.3 1.3 1.1
* surface water only

Landscape protection area

The Obersee is part of the Rötsee landscape protection area, which was designated in 1979 . It is essentially characterized by raised bogs , flat bogs , lakes, ponds and other landscape forms from the Ice Ages and also shows a rich alternation between meadows and arable land and forests. By placing it under protection, the special recreational value of the delightful natural landscape is to be preserved for the general public and the natural character of the landscape characterized by the identified landscape-defining elements is to be preserved.

Individual evidence

  1. ^ Ordinance of the District Office Ravensburg as the lower nature conservation authority on the "Rötsee" landscape protection area in the area of ​​the municipality of Kißlegg and the large district town of Leutkirch in the Allgäu of February 26, 1979 (Ges. Bl. 1980, p. 69).

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