Greifenbach reservoir
| Greifenbachstauweiher Geyerscher pond |
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| Coordinates | 50 ° 38 '46 " N , 12 ° 54' 45" E | ||||||||
| Data on the structure | |||||||||
| Construction time: | 1396/1404 | ||||||||
| Height above valley floor: | 7 m | ||||||||
| Height above foundation level : | 8.2 m | ||||||||
| Height of the structure crown: | 628.05 m | ||||||||
| Crown length: | 413 m | ||||||||
| Crown width: | 3 m | ||||||||
| Data on the reservoir | |||||||||
| Altitude (at congestion destination ) | 627 m | ||||||||
| Water surface | 18 or 23 ha | ||||||||
| Storage space | 0.638 million m³ | ||||||||
The Greifenbachstauweiher (also Dammteich or Geyerscher Teich ) is located between Geyer and Ehrenfriedersdorf in the Ore Mountains ( Saxony ) and was originally created for mining. Today the lake is used for industrial water supply , for flood protection and for recreational purposes. a. for swimming, diving and boating.
The Greifenbachstauweiher is one of the oldest dams in Germany. After the Ehrenfriedersdorfer Röhrgraben was dug around 1380 to supply the tin mines of Ehrenfriedersdorf with impact water from the Greifenbach , the brook was probably dammed for the first time in 1396. In 1404 the Great Geyersche Teich or Obere Geyersche Schutzteich was expanded so that in the 15th century it received a capacity of 60,000 m³ of water. Below the old road from Geyer to Jahnsbach there were other ponds on the Greifenbach, the Upper and the Lower Ratsteich , which are still partially preserved.
After the dam was raised in 1942, the storage space increased to 534,000 m³. In 1968 the reservoir was enlarged to 634,000 m³ and has been used for recreational purposes ever since. The dam was repaired in 1948, 1976/77 and 2010 to 2012.
The barrier structure is an earth dam . The dammed water is the red water that leaves the reservoir under the name Greifenbach .
