|Plansee from the southeast, in the middle the outflow through the Kleiner Plansee towards the Lechtal|
|Geographical location||Reutte district , Tyrol|
Heiterwanger See (southwest)
|Drain||Archbach → Lech|
|Location close to the shore||Reutte|
|Altitude above sea level|
|Maximum depth||77 m|
|Middle deep||43 m|
|Catchment area||190.5 km² (including supply lines)|
used as storage for electricity generation
The lake is located in the area of the municipalities of Heiterwang , Reutte and Breitenwang around 7 km as the crow flies southwest of the Ammersattel . It is connected by a 300 m long canal built in 1908 with the originally 68 cm higher lake Heiterwang , from which, in addition to the other tributaries Spießbach and Torsäulenbach , it draws its water. The Spießbach flows into the southeast, the Torsäulenbach coming from the Ammersattel at the northeastern end of the lake. In the northwest, the Plansee has an outflow through the so-called Kleiner Plansee and over the Archbach to the Lech . It has two basins with a depth of 77 and 72 m on a total area of 2.87 km², making it the largest lake in Ausserfern .
The lake is mentioned for the first time in a border description of the Diocese of Freising from the years 1073/78 as Planse , other early forms of name are Please , Plense and Plase . The fishing rights at Plansee were held by the Tyrolean sovereigns and the Steingaden monastery , and in the 15th century the Stams monastery was donated or acquired . Duke Siegmund and his successor, Emperor Maximilian I tried to get the best fishing waters in the country into their hands and, like the Achensee from the Georgenberg monastery, had the Plansee ceded by the Stams monastery. In Maximilian's fishing book of 1500, the Aiterwanger and the Plaan See are already described as two particularly important lakes for the Prince's hunting and fishing pleasure . However Stams insisted on his right hand and got a limited fishing rights conceded that in a treaty of 1631 by Archduke Leopold V was confirmed.
In 1902 the Plansee power plant was put into operation, in 1908 the canal to Heiterwanger See was built, which was widened in 1951. Liners have been operating on the lake since 1927.
The natural catchment area of the Plansee is 115.5 km². In order to increase the amount of water available for power plant operation, water from the Rotlech and one of its feeders is fed to the Plansee, increasing the catchment area by 75.0 km². The mean discharge is 6.9 m³ / s, the (theoretical) water renewal time 0.6 years.
Similar to Lake Heiterwang, the Plansee's low biomass of floating algae and the high visibility (up to 15 m, in 2012 annual mean 7.25 m) demonstrate nutrient deficiency and thus a stable oligotrophic state. The bathing water quality was rated as excellent in 2013. Despite the high water quality, the overall ecological condition is only assessed as moderate by the power plant operation due to the fluctuations in the lake level.
To those found in Plansee fish species include grayling , brown trout , minnow , perch , gudgeon , carp , Koppe , rainbow trout , whitefish , roach , tench , lake trout and Arctic char . In contrast to Lake Heiterwang, the Plansee is insignificant for water birds. The large, isolated occurrence of the jackdaw shrimp is probably due to artificial stocking, possibly from northern Italy.
The lake is used together with the Heiterwanger See by the Reutte electricity works as a storage facility; in the winter months the water level is lowered by up to 5 m. The usable storage capacity is 20.8 million m³.
One of the highest commercial shipping lines in Austria operates on Plan- and Heiterwanger See and offers round trips from the end of May until autumn. Boarding points are at the three hotels "Forelle", "Seespitze" and "Fischer am See".
The lake is used in summer for swimming and various water sports such as surfing, sailing, diving and fishing, and in winter for ice skating and curling. In the village of the same name, Plansee (municipality of Breitenwang), there is a camping site, the “Forelle” hotel, an alpine pasture with a show dairy and restaurant, as well as a scheduled landing stage .
- Christian Singer: The Plansee. Landscape and history . Steiger, Berwang 1987, ISBN 978-3-85423-074-8 .
- Edwin Fels : The Plansee. A geographic lake study. Dissertation, University of Munich, 1913.
- Federal Office for Water Management (Hrsg.): Atlas of the natural lakes of Austria with an area ≥ 50 ha. Morphometry - Typing - Trophy. As of 2005. Series of publications by the Federal Office for Water Management, Volume 29, Vienna 2008, pp. 127–129 ( PDF; 9 MB )
- Federal Ministry of Agriculture, Forestry, Environment and Water Management (ed.): Hydrographisches Jahrbuch von Österreich 2011. 119th volume. Vienna 2013, p. OG 405, PDF (12.9 MB) on bmlrt.gv.at (yearbook 2011)
- Electricity works Reutte EWR 1908: Construction of the canal from Plansee to Heiterwanger See
- Carsten Elfenbein: Report 1996 on geological recordings in the Northern Limestone Alps on sheet 115 Reutte. In: Yearbook of the Federal Geological Institute, Volume 138 (1997), Issue 3, p. 310 ( PDF; 23 kB )
- Martin Bitschnau , Hannes Obermair : Tiroler Urkundenbuch, II. Department: The documents on the history of the Inn, Eisack and Pustertal valleys. Vol. 1: Up to the year 1140 . Universitätsverlag Wagner, Innsbruck 2009, ISBN 978-3-7030-0469-8 , p. 217-218 .
- Otto Stolz : History of the waters of Tyrol. Schlern-Schriften, Volume 32, Innsbruck 1932, pp. 223–224 ( digitized version )
- Federal Ministry for Agriculture, Forestry, Environment and Water Management (Ed.): Water quality in Austria. Annual report 2013. Vienna 2014, p. 73 ( PDF; 21.1 MB ( Memento of the original from December 25, 2014 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. )
- Federal Ministry of Health and Office of the Tyrolean Provincial Government (ed.): Bathing water profile Plansee, camping site. Vienna 2014 ( PDF; 1.2 MB )
- Federal Office for Water Management, Institute for Aquatic Ecology, Fishery Biology and Seology (Ed.): The fish species communities of the great Austrian lakes. Comparison between historical and current situation. Fish ecological lake types. Publication series of the Federal Office for Water Management, Volume 18, Vienna 2003, p. 130 ( PDF; 2.8 MB ( Memento of the original from December 20, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original - and archive link according to the instructions and then remove this note. )
- Armin Landmann: On the importance of the waters of North Tyrol as resting and wintering places for water birds (Gaviidae, Podicipedidae, Anatidae, Rallidae and Laridae). Results of the water bird censuses from 1969/70 to 1980/81. In: Egretta - Vogelkundliche Nachrichten aus Österreich 24/1 (1981), pp. 1–40 ( PDF; 2.7 MB )
- Leopold Füreder, Yoichi Machino: Record of the White-clawed Crayfish Austropotamobius pallipes ( Lereboullet 1858) from Plansee (Tyrol, Austria). In: Reports of the Natural Science-Medical Association Innsbruck, Volume 82 (1995), pp. 241–246 ( PDF; 620 kB )
- Office of the Tyrolean Provincial Government (publisher): Statistisches Handbuch Bundesland Tirol 2009 , p. 28 ( PDF; 9.3 MB )