Retention basin Friedrichswalde-Ottendorf
| Retention basin Friedrichswalde-Ottendorf | |||||||||
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| Coordinates | 50 ° 53 '30 " N , 13 ° 54' 36" E | ||||||||
| Data on the structure | |||||||||
| Construction time: | 1965-1970 | ||||||||
| Height above valley floor: | 20 m | ||||||||
| Height above foundation level : | 21 m | ||||||||
| Height of the structure crown: | 263 m | ||||||||
| Building volume: | 156 000 m³ | ||||||||
| Crown length: | 253 m | ||||||||
| Crown width: | 3 m | ||||||||
| Slope slope on the air side : | 1: 2.0 | ||||||||
| Slope slope on the water side : | 1: 2.8 | ||||||||
| Data on the reservoir | |||||||||
| Altitude (at congestion destination ) | 260.42 m, permanent traffic jam 248.62 m | ||||||||
| Water surface | 22 ha | ||||||||
| Storage space | 1.518 million m³ | ||||||||
| Total storage space : | 1.813 million m³ | ||||||||
| Catchment area | 26.876 km² | ||||||||
| Design flood : | 62 m³ / s | ||||||||
The retention basin Friedrichswalde-Ottendorf is a flood protection system of the state dam administration of Saxony (dam maintenance department Gottleuba / Weißeritz) in the catchment area of the bier in the area of the municipality of Bahretal . The facility was completed in 1970. In addition to flood protection, the flood retention basin is used to provide process water for industry and agriculture as well as commercial fishing .
The dam is a straight earth dam with an inclined inner seal made of clay.