Haslacher Weiher

Haslacher Weiher
Haslacher Weiher
Geographical location	Germany Baden-Wuerttemberg district Ravensburg
Tributaries	Schlupfenbach and Graben
Drain	via Haslacher Bach to the Schussen
Places on the shore	Haslach
Location close to the shore	Aulendorf
Data
Coordinates	47 ° 57 '49.6 "  N , 9 ° 40' 49.1"  E Coordinates: 47 ° 57 '49.6 "  N , 9 ° 40' 49.1"  E
Altitude above sea level	561  m above sea level NHN
surface	2.2 ha
volume	46,000 m³
Maximum depth	4.0 m
Middle deep	2.1 m
Catchment area	8.6 km²
particularities	" Haslacher Weiher " nature reserve

The Haslacher Weiher is a still water body in the Baden-Württemberg town of Aulendorf in the Ravensburg district in Germany .

location

The 2.2 hectare large Haslacher Weiher , about three and a half kilometers northeast of the town center Aulendorfer the hamlet Haslach at an altitude of about 560  meters above sea level. NHN located, is one of the natural area of Upper Swabian hills . Today it is used by the “Aulendorf Fishing and Nature Conservation Association” as a fishing lake.

Hydrology

The Haslacher Weiher was probably created in the 15th century , and was first mentioned in 1426. Its catchment area extends to around 860 hectares. The lake basin is 2.2 hectares in size. With an average depth of 2.1 meters and a maximum depth of 4 meters, this results in a volume of around 46,000 cubic meters.

The pond is supplied via a ditch as well as the Schlupfenbach , the discharge via a regulating weir into the Haslacher Bach and the Schussen .

ecology

Since 2000, the cities Aulendorf and Bad Waldsee (only catchment area) with the Haslacher pond on action program for the rehabilitation of Upper Swabian lakes involved. An important goal of this program is to reduce nutrient inputs into streams, lakes and ponds and thereby improve and maintain the condition of the water bodies.

80 percent of the catchment area is used for forest and 15 percent for agriculture - 5 percent of which is grassland and 10 percent arable land.

Plant nutrients and other trophy indicators

year	2000	2002	2009	2014
Total PO 4 - phosphorus (µg / l)	27	35	59	40
Chlorophyll a (µg / l)	09	12	12	13
Chlorophyll a peak (µg / l)	18th	30th	20th	31
total inorganic nitrogen a (mg / l)		01.93	01.21	00.67
Viewing depth (m)	00.8	00.8	00.9	00.9

Flora and fauna

Plants observed in the area of ​​the Haslacher Weiher

• Yellow pond rose ( Nuphar lutea ), a species of the water lily family
• White water lily ( Nymphaea alba ), popularly often referred to as water lily , also belongs to the water lily family
• Small duckweed ( Lemna minor L. ), a species from the arum family

and animals

• Coot ( Fulica atra ), a species of the railing family
• 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

Nature reserve

The Haslacher Weiher is surrounded by the " Haslacher Weiher " nature reserve named after it . It is an important element in the network of Upper Swabian wetlands, historical evidence of diverse forms of pond use and habitat, as well as a retreat for a species-rich flora and fauna.

• See also : List of nature reserves in the Ravensburg district

Web links

• The Haslacher Weiher in the action program for the rehabilitation of Upper Swabian lakes
• Water profile at www.anglermap.de

Individual evidence

1. ↑ Profile of the nature reserve "Haslacher Weiher"