Egau

The Egau in Ballmertshofen

The Egau is a 44 km long left tributary of the Danube in Baden- Württemberg and Bavaria. In older literature, the body of water is also known as Harrow.

Geography

Egau origin

It rises in one with a stone wall covered Quelltopf south of the city in Neresheim Härtsfeld near the cemetery to almost 495 m above sea level. NN. The source can be up to 600 l / s pour. The effluent stream flows after a few meters in a longer, through the valley Kuchener herkommenden from westerly Großkuchen Quellast, but often completely dried up.

Course

The Egau draws constantly in directions between East and South. Near the Dischinger residential district Katzenstein it flows through the Härtsfeldsee. Just before the border to Bavaria it passes the Buchbrunnen source that significantly before the construction of the local water company increased the water levels of the river. Immediately after the border the river from the left in the ornamental Heimer district Datt Hausen of Lohgraben running too; at the same point the river splits into the Egau and in the artificial Riedegau. The two rivers run parallel to each other at first, then cross each other but between Ziertheim and Datt Hausen using a bridge. From then on, the artificial river carries the name stockpile trench. After a total of 1.6 kilometers, the two rivers unite again at the height of the eastern city limits ornamental home. Shortly thereafter, the nature reserve Datt Hauser Ried drained via the right Rostelbach in it. Shortly before Dillingen- Altheim Danube flows from the right Breitlegraben, here is the Danube River just three kilometers to the south of the Egau, now here runs east and this approaches in fairly shallow angle. In the east Dillingens the dwarf stream also runs from the right. After Steinheim it reaches the left bank of the Danube and flows then a further 2 kilometers, parallel to this in its left flood dam. Only below the barrage Hoechstaedt opens the Egau to 410 m above sea level. NN from the left into the Danube.

In Saddle Bring forwards at high state of Egaugraben part of Egau - water to the left and east from the southern edge of the Lower Ried, it reaches over the powder stream and then the Klosterbach the Danube about 9 ½ miles further down the valley a little way below the Schwenningen barrage to 404 m above sea level. NN.

Average flow over the Egau from one to two cubic meters per second.

Places on the river

  • Neresheim
  • Oberdischingen
  • Ziertheim
  • Wittislingen
  • Dillingen
  • Blenheim

Inflows

  • Torrent (left)
  • Katzensteiner Bach ( left)
  • Mite Heimer Bach ( right)
  • Bach from the gall Mitre source ( right)
  • Overflow of Buchbrunnen source ( right)
  • Grabnatgraben (left)
  • Hole field ditch (left)
  • Rostelbach (right)

→ Egaugraben (left)

  • Breitlegraben (right)
  • Dwarf Bach ( right)

Egauwasserwerk

In 1929, the country's water supply acquired the Buchbrunnen source in Egautal at Oberdischingen. This source is called by some mistakenly Egau origin; she pours an average of 927 l / s (min 623 max. 1,470 l / s) and is the main tributary of the Egau. After extensive investigation measures the country's water supply decided in 1952 to use the Buchbrunnen source of public drinking water supplies. The Egauwasserwerk went after a construction period of four years in 1957 into operation. Depending on the Egauwasserführung, up to 800 liters are taken per second. The karst spring water from the fountain source book naturally has a very good quality. Only after persistent heavy rainfall and during the snow melt results in mineral turbidity of the source water. The construction of the federal highway 7 through the water reserve of the Buchbrunnen source, however, had to be expanded in the years from 1982 to 1984 treatment plants in Egauwasserwerk for preventive protection of drinking water quality. The existing sand filtration was replaced by a more efficient flocculation on two-layer sand filter. This is followed by an oxidation with ozone, activated carbon filtration and disinfection of drinking water for safety reasons. In Egauwasserwerk a de-carbonisation was built in the years 1993-1995. This softens the karst spring water, which, due to the geological conditions of a natural hardness of 18.5 ° dH, to around 13.5 ° dH.

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