Deisendorfer Weiher

Deisendorfer Weiher
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Geographical location	Germany Baden-Wuerttemberg Bodenseekreis Überlingen
Tributaries	Main inflow via the Spitalweiher , inflow from the east in several trenches
Drain	Riedbach  → Nussbach  → Lake Constance / Rhine  → North Sea
Places on the shore	Deisendorf
Data
Coordinates	47 ° 46 '36 "  N , 9 ° 13' 6"  E Coordinates: 47 ° 46 '36 "  N , 9 ° 13' 6"  E
Altitude above sea level	452  m above sea level NHN
surface	6.2 ha
volume	127,000 m³
Maximum depth	4.1 m
Middle deep	2.0 m
Catchment area	8.59 km²
particularities	FFH and LSG area

The Deisendorfer Weiher , also called Königsweiher , is a still water in the area of ​​the Baden-Württemberg city ​​of Überlingen in the Lake Constance district in Germany .

location

The roughly six hectare large Deisendorfer Weiher , about four and a half kilometers northeast of the town of Ueberlingen center at an altitude of 452  m above sea level. NHN located, is one of the natural area for Linzgau . Today it is used for commercial fishing purposes.

Hydrology

The Deisendorfer Weiher was originally created as a fish pond for the Salem Imperial Abbey . Its catchment area extends to 859 hectares. The size of the lake basin is 6.2  hectares , with an average depth of 2.0 meters and a maximum depth of 4.1 meters, the volume is around 127,000 cubic meters.

The main inflow of the pond is from the hospital pond to the north, and several ditches from the east lead to additional surface water. The runoff takes place via Riedbach and Nussbach to Lake Constance and thus into the Rhine .

ecology

Since 1989 Ueberlingen and Salem (only catchment area) with the Deisendorfer 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.

40 percent of the pond's catchment area is used for forest and 50 percent for agriculture - 45% of which is grassland, 50% arable land and 5% special crops.

Plant nutrients and other trophy indicators

year	1997 *	1998 *	2004	2010	Trophy level
Total PO 4 - phosphorus (µg / l)	37	46	36	25th	eutrophic
Chlorophyll a (µg / l)	14th	21st	17th	15th	eutrophic
Chlorophyll a peak (µg / l)	31	60	48	31	eutrophic
total inorganic nitrogen a (mg / l)	2.86	2.22	1.42	2.21
Viewing depth (m)	2.8	2.2	1.4	2.0	eutrophic
* surface water only

Web links

• Action program for the rehabilitation of Upper Swabian lakes