Herzogenweiher

Herzogenweiher
The duke pond
Geographical location	Germany Baden-Wuerttemberg district Ravensburg
Tributaries	Wiesenbach
Drain	1) via Graben, Ebersberger Mahlweiher and Schwarzach in Schussen 2) via overflow and Haslach into the Untere Argen
Places on the shore	Amtzell
Location close to the shore	Wangen in the Allgäu
Data
Coordinates	47 ° 41 '42 "  N , 9 ° 43' 16"  E Coordinates: 47 ° 41 '42 "  N , 9 ° 43' 16"  E
Altitude above sea level	550  m above sea level NHN
surface	2.9 ha
volume	26,100 m³
Maximum depth	1.6 m
Middle deep	0.9 m
Catchment area	5.43 km²
particularities	FFH area

The Herzogenweiher is a body of water in the Baden-Württemberg municipality of Amtzell in the Ravensburg district in Germany. It was first mentioned in 1396 and served as a reservoir for various mills.

location and size

The lake is located around 2.2 kilometers southwest of the center of Amtzell, within the Herzogenweiher nature reserve ( FFH area ) at an altitude of 550  m above sea level. NHN and is owned by the state of Baden-Württemberg. The size of the lake basin is 2.9  hectares . With an average depth of 90 centimeters (maximum depth = 1.6 meters), the volume is 26,100 cubic meters. The catchment area of ​​the Herzogenweiher covers about 543 hectares; 20 percent of this is forests and 75 percent is land used for agriculture. The shore length is approximately 780 meters.

The main inflow comes from the straightened Wiesenbach on the west bank of the pond. The drainage takes place over a ditch, the Ebersberger Mahlweiher and the Schwarzach in the Schussen or additionally over an overflow and the Haslach in the Argen in case of high water .

ecology

Plant nutrients and other trophy indicators (annual averages)

year	2006
Total PO 4 - phosphorus (µg / l)	110
Chlorophyll a (µg / l)	66
Chlorophyll a peak (µg / l)	250
total inorganic nitrogen (mg / l)	3.03
Viewing depth (m)	1.1

With the help of the action program for the rehabilitation of Upper Swabian lakes , the planning and implementation of extensification measures was implemented.

Herzogenweiher nature reserve

The main protection purpose of the nature reserve surrounding the pond is the preservation of the water and the adjoining reed areas and wet meadows as characteristic but highly endangered elements of the Upper Swabian cultural landscape, as an ecologically valuable retreat for rare plant and animal species and, in particular, as a resting place for bird migration. The purpose of protection also includes the goal of undoing damage that has already occurred and interventions in the past.

Web links

• Action program for the rehabilitation of Upper Swabian lakes
• Weblink of the State Institute for the Environment, Measurements and Nature Conservation Baden-Württemberg (LUBW)

Individual evidence

1. ^ Ordinance of the Tübingen regional council on the nature reserve "Herzogenweiher" dated February 5, 1991 (Journal of Laws of April 17, 1991, p. 185)