Appenweiler pond

Appenweiler pond
Appenweiler pond
Geographical location	Germany Baden-Württemberg Lake Constance district
Tributaries	Mühlbach
Drain	via Mühlbach to the Schussen
Location close to the shore	Friedrichshafen , Ettenkirch , Appenweiler
Data
Coordinates	47 ° 43 '24.7 "  N , 9 ° 31' 46.1"  E Coordinates: 47 ° 43 '24.7 "  N , 9 ° 31' 46.1"  E
Altitude above sea level	454.5  m above sea level NHN
surface	2.2 ha
volume	45,700 m³
Maximum depth	5.5 m
Middle deep	2.1 m
Catchment area	2.63 km²

The Appenweiler Weiher is a still water in the area of ​​the Baden-Württemberg city ​​of Friedrichshafen in the Lake Constance district in Germany.

location

The approximately two hectares large Appen hamlet pond , about nine kilometers northeast of Friedrichshafen city center, between the hamlets Appen hamlet in the north, bed hamlet in the southwest, Elle hamlet in the west and the White Auerswald in the east, at an altitude of 554.5  meters above sea level. NHN located, is one natural area to Lake basin . Today it is used for fishing purposes.

Hydrology

The Appenweiler Weiher was probably created in the 15th century . Its catchment area extends to about 260 hectares. The size of the lake basin is 2.2  hectares , the maximum length about 240 meters, the width 120 meters. With an average depth of 2.1 meters and a maximum depth of 5.5 meters, this results in a volume of around 45,700 cubic meters. The inlet of the pond is via the 'right branch' of the Mühlbach , the outflow via a regulating weir in the direction of Schussen .

ecology

Since 2000, the cities of Friedrichshafen and Ravensburg (only catchment area) with the Appen hamlet pond on action program for the rehabilitation of Upper Swabian lakes involved. An important goal of this program is to reduce nutrient inputs in streams, lakes and ponds and thereby improve and maintain the condition of the water bodies. Five percent of the catchment area is used for forest and 90 percent for agriculture - including 41% grassland, 30% fruit crops and 29% arable land.

Plant nutrients and other trophy indicators

year	2002	2009	Trophy level
Total PO 4 - phosphorus (µg / l)	172	159	eu- / hypertrophic
Chlorophyll a (µg / l)	35	69	eutrophic
Chlorophyll a peak (µg / l)	104	107	highly eutrophic
total inorganic nitrogen a (mg / l)	2.47	0.47
Viewing depth (m)	0.9	0.6	highly eutrophic
surface water only

Flora and fauna

Plants observed in the area of ​​the pond

• Yellow pond rose ( Nuphar lutea ), a species of the water lily family
• Common pond rush ( Schoenoplectus lacustris ), plant of the sourgrass family
• Small duckweed ( Lemna minor L. ), a species from the arum family
• Water knotweed ( Persicaria amphibia ), a species of the knotweed family
• Water mint ( Mentha aquatica ), also Bach mint called a plant belonging to the family of mint
• White water lily ( Nymphaea alba ), popularly often referred to as water lily , also belongs to the water lily family

and animals

• Coot ( Fulica atra ), a species of the railing family
• Pochard ( Netta rufina ), a representative of the duck birds
• Tufted Duck ( Aythya fuligula ), also a species of duckfowl
• Reed bunting ( Emberiza schoeniclus ), also known as reed sparrow , is a species of bird in the family of bunting
• Reed Warbler ( Acrocephalus scirpaceus ), a species of songbird in the warbler family
• Little Grebe ( Tachybaptus ruficollis ), a species of the grebe family

Web links

• Action program for the rehabilitation of Upper Swabian lakes
• "Appenweiler Weiher causes problems" at schwaebische.de