Riegsee

Riegsee
	View over the Riegsee to the south; in the background mountains of the Ester Mountains, Wetterstein and Ammer Mountains (from left)
Geographical location	Upper Bavaria
Tributaries	Groundwater
Drain	underground to the Ettingerbach and Hungerbach
Places on the shore	Riegsee
Location close to the shore	Murnau am Staffelsee
	Data
Coordinates	47 ° 42 '0 " N , 11 ° 13' 32" E Coordinates: 47 ° 42 '0 " N , 11 ° 13' 32" E
Altitude above sea level	658.6 m above sea level NN
surface	1.97 km²
length	2.83 km
width	1.02 km
volume	12,780,000 m³
scope	8.25 km
Maximum depth	15.4 m
Middle deep	6.8 m

The Riegsee a 3.3 km long and up to 0.6 km wide lake in the district of Garmisch-Partenkirchen , Upper Bavaria, northeast of Murnau . The place is part of the tourist region Das Blaue Land .

etymology

His name is based on the personal name Ruodgis . Riegsee means "Lake of Ruodgis". Ruodgis is a German name and means "victory arrow" (Dr. Schweizer). The name has evolved over the centuries as follows:

approx. 1050 Ruodgisis-se, Ruodgise
approx. 1150 Ruetkis-se
circa 1250 Ruogese
in the dialect Riagse

geography

The lake has an area of 188 hectares . It is a dead lake from the Würme Ice Age , the basin of which was formed by the Isar-Loisach glacier . The lake is only shallow because of its protected location between the ribs of the fold molasses in the Murnau Mulde. Towards the end of the Würm Ice Age, the lake's water level was about 10 m higher than it is today. It is the largest Bavarian lake with no surface inflow or outflow. It is probably fed and drained by groundwater. As could be determined by color samples, the water of the lake in the Ettingerbach and Hungerbach near Huglfing comes to light in strong springs.

A dry run to the north towards Söchering proves that the lake had a water level about 15 m higher in the late glacial period and that the much larger inflow flowed off via this overflow. This inflow is believed to be in the melting glacier as long as it still reached over the Murnau molasse fold. The valley basin extends to Etting and is used today in the Söchering area and then again from just before Etting by brooks.

The lake is a maximum of 15.4 meters deep, according to other information 18.35 meters. The lake hardly offers public bathing opportunities, as many sections in the shore area are designated as private.

The Riegsee used to be called "Hungersee", from which position one can see the future weather. Long ago the grain farmers came to the lake from the Danube floor to watch the water level. If the lake had a lot of water, that was a bad omen.

In the far south-west near Froschhausen is the Hornerlache , an almost separated, approximately 2.3 hectare bay. Only here and in the northernmost tip of the lake have significant reeds and floating leaf communities been preserved undisturbed. About 210 meters south of the Riegsee is the much smaller Froschhauser See .

For a long time there have been so-called floating islands on the Riegsee, which are not islands in the sense of land masses, but vibrating lawns that detached from the shore , in the case of the Riegsee specifically, bog vegetation that destabilizes the shore. Six of them have been observed moving across the lake since 1990. The largest floating island with an area of around 2000 m² and a mass of 4000 tons broke away in 2009 in the Aidlinger Bay in the northeast of the water. This was anchored for security reasons, but in 2012 a 1000 m² piece was detached from it and anchored the following year. In the summer of 2015, parts of it broke away again.

administration

Almost the entire area of the lake belongs to the Murnau am Staffelsee market in the Weindorf district . Only the northernmost tip with around 5.3 hectares belongs to the municipality of Spatzenhausen, to which it borders with other bank areas. In the east, the lake borders the municipality of Riegsee.

The lake with sole fishing rights has belonged to the von Poschinger- Camphausen family since 1910 .

literature

Meyer & Schmidt-Kaler: Walks into the history of the earth (8) - On the trail of the Ice Age south of Munich -Eastern part-. Publishing house Dr. Friedrich Pfeil, Munich 2002. ISBN 3-931516-09-1

Web links

Commons : Riegsee (See) - Collection of images

Geological history of the Habach area

Individual evidence

↑ ^a ^b ^c ^d ^e ^f Documentation of the condition and development of the most important lakes in Germany: Part 11 Bavaria (PDF; 1.7 MB)
^ August Rothpletz: The Osterseen and the Isar foreland glacier . In: Communications of the Geographical Society Munich . Volume 12, Issue 2 (November 1917), pages 99–314, [241]
^ Bavarian State Office for Water Management: table and map
↑ Riegsee Description University of Cottbus
↑ M. Sperer: Inselgeburt im Riegsee. tz 27./28. June 2015, p. 14. online

[Daten-1] ↑ ^a ^b ^c ^d ^e ^f Documentation of the condition and development of the most important lakes in Germany: Part 11 Bavaria (PDF; 1.7 MB)

[2] August Rothpletz: The Osterseen and the Isar foreland glacier . In: Communications of the Geographical Society Munich . Volume 12, Issue 2 (November 1917), pages 99–314, [241]

[3] Bavarian State Office for Water Management: table and map

[4] Riegsee Description University of Cottbus

[5] M. Sperer: Inselgeburt im Riegsee. tz 27./28. June 2015, p. 14. online