Pond pond

Pond pond
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Geographical location	Ravensburg district , Baden-Württemberg , Germany
Tributaries	Trenches
Drain	Rotbach → Untere Argen → Rhine → North Sea
Places on the shore	Isny in the Allgäu
Data
Coordinates	47 ° 40 '35.5 "  N , 10 ° 2' 43.1"  E Coordinates: 47 ° 40 '35.5 "  N , 10 ° 2' 43.1"  E
Altitude above sea level	733  m above sea level NHN
surface	0.93 ha
volume	9800 m³
Maximum depth	2.2 m
Middle deep	1.1 m
Catchment area	3.46 km²
particularities	Action program for the rehabilitation of Upper Swabian lakes

The Biesenweiher is an approximately one hectare large pond in the area of Baden-Württemberg town of Isny in the district of Ravensburg in Germany .

location

The "Biesenweiher" lies at an altitude of 733  m above sea level. NHN , around 1.8 kilometers southeast of the city center of Isny, near the hamlets of Biesen in the south and Gschwend in the east.

Hydrology

The "Miesenweiher" has a catchment area of ​​around 346 ha. With a size of 0.93 ha, an average depth of 1.1 meters and a maximum depth of 2.2 m, the lake volume is around 9,800 cubic meters.

The “pond pond” is fed from the south and west via two ditches. The pond runs over the Rotbach into the Untere Argen to Lake Constance and thus into the Rhine and ultimately into the North Sea .

ecology

Since 2010, Isny ​​and Maierhöfen (catchment area only) have been involved in the action program for the rehabilitation of Upper Swabian lakes with the “Biesenweiher” . 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.

The pond's catchment area is used 20 percent for forest and 75 percent for agriculture - 70% of which is grassland and 5% arable land.

Plant nutrients and other trophy indicators

year	2011
Total PO 4 - phosphorus (µg / l)	170
Chlorophyll a (µg / l)	32
Chlorophyll a peak (µg / l)	70
total inorganic nitrogen a (mg / l)	0.87
Viewing depth (m)	0.6

Values ​​according to the profile of the lake in the action program for the rehabilitation of Upper Swabian lakes , see also the references on this page.

Individual evidence

1. ↑ ^{a b c} Data of the lake from: Biesenweiher profile on: www.seenprogramm.de
   The data query on the layer standing water from the State Institute for the Environment Baden-Württemberg (LUBW) ( information ) resulted in a slightly larger area of ​​0.9948 ha.
   Queries on January 2, 2018.