Holzmühleweiher (Vogt)

Holzmühleweiher
Wood mill pond near Vogt
Geographical location	Germany Baden-Wuerttemberg district Ravensburg
Tributaries	via Wiesenbach from Scheibensee
Drain	via Eggenbach and Haslach in Untere Argen
Location close to the shore	Vogt , Ravensburg
Data
Coordinates	47 ° 45 ′ 28 "  N , 9 ° 45 ′ 37"  E Coordinates: 47 ° 45 ′ 28 "  N , 9 ° 45 ′ 37"  E
Altitude above sea level	655  m above sea level NHN
surface	3.1 ha
volume	47,700 m³
Maximum depth	3.8 m
Middle deep	1.5 m
Catchment area	77.5 ha
particularities	Landscape protection area , FFH area

The Holzmühleweiher is a still water in the area of ​​the Baden-Württemberg community Vogt in the district of Ravensburg in Germany .

location

The approximately 3.1  hectare (ha) large wood mill pond naturally belongs to the Westallgäu hill country . It is about two kilometers southwest of the center of Vogter, between the hamlets of Edensbach , Reckendürren , Mosisgreut and the wood mill that gives it its name , at an altitude of 655  m above sea level. NHN .

description

The pond , first mentioned in 1818, was around four times as large until it was partially drained in the middle of the 19th century, and the corresponding terrain level can still be seen. Today the Holzmühleweiher is a sought-after fishing water and is used as fishing water. There is a small lido on its northwestern bank.

Since 1995 the pond has been part of the designated Jungmoränenlandschaft protected landscape area between Amtzell and Vogt . Due to its poor water quality, the Holzmühleweiher was included in the " Action Program for the Rehabilitation of Upper Swabian Lakes " of the Tübingen Regional Council.

Hydrology

The catchment area of the Holzmühleweiher is around 775 ha; 15 percent of this is used as forest and 75 percent as agricultural area. With an area of ​​3.1 ha and an average depth of 1.5 m (max. Depth = 3.8 m), the volume of the lake is around 47,700 cubic meters.
The pond is mainly fed by a meadow brook from the Scheibensee , the outflow is via the Eggenbach and the Haslach into the Untere Argen .

ecology

Annual average of plant nutrients and other trophy indicators

year	2000 *	2001 *	2007 *
Total PO 4 - phosphorus (µg / l)	57	53	45
Chlorophyll a (µg / l)	19th	27	31
Chlorophyll a peak (µg / l)	23	64	58
total inorganic nitrogen (mg / l)		1.75	2.19
Viewing depth (m)	1.0	1.4	1.5
* surface water only

Nutrient concentrations in the inlet of the wood mill pond

year	2001	2007
o-PO 4 -phosphorus (µg / l)	14th	12
Total PO 4 phosphorus (µg / l)	55	29
Nitrate nitrogen (mg / l)	2.55	3.84
total inorganic nitrogen (mg / l)	2.57	3.85
Water flow (l / s)	46	45

Web links

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