Obersee (Kisslegg)

Obersee
Geographical location	Germany Baden-Wuerttemberg 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
Data
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
particularities	Landscape protection area , FFH area

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.

location

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 .

description

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.

Hydrology

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 .

ecology

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).

Web links

• Weblink of the State Institute for the Environment, Measurements and Nature Conservation Baden-Württemberg (LUBW)
• Action program for the rehabilitation of Upper Swabian lakes