Fojtka dam
| Fojtka dam | |||||||||
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| Coordinates | 50 ° 49 '35 " N , 15 ° 3' 27" E | ||||||||
| Data on the structure | |||||||||
| Lock type: | Gravity dam | ||||||||
| Construction time: | 1904-1906 | ||||||||
| Height above valley floor: | 9 or 11 m | ||||||||
| Height above foundation level : | 15.8 or 18 m | ||||||||
| Height of the structure crown: | 393.5 m | ||||||||
| Building volume: | 12 000 m³ | ||||||||
| Crown length: | 145 m | ||||||||
| Crown width: | 4.5 m | ||||||||
| Base width: | 11 m | ||||||||
| Radius of curvature : | 175 m | ||||||||
| Data on the reservoir | |||||||||
| Altitude (at congestion destination ) | 392.5 m | ||||||||
| Water surface | 8.7 ha | ||||||||
| Storage space | 0.25 million m³ | ||||||||
| Catchment area | 6.9 km² | ||||||||
| Design flood : | 11 m³ / s | ||||||||
The Fojtka dam ("Voigtsbach dam") is a typical Intze dam in the Jizera Mountains in Bohemia (Czech Republic), which was part of Austria-Hungary at the time of construction . The dam is located between Mníšek and Fojtka north of Liberec .
purpose
The dam serves to protect against floods and the rise in low water levels. The dammed water is the Voigtsbach in the source area of the Jeřice ("Görsbach").
The dam
The gravity dam was built from 1904 to 1906 under the supervision of Otto Intze from Aachen . After Intze's death in December 1904, chief engineer E. von Scheure took over construction management. The local construction manager was the engineer Hermann Schmidt.
The wall is made of hornblende granite - rubble stones. Cement trass was used as the mortar .
More dams
To protect against flooding , a total of six dams were planned in the Görlitzer Neisse ( Lausitzer Neisse ) river basin . The trigger was the floods of 1897 in large parts of Bohemia , Saxony , Prussia and the Alpine countries. For this purpose, the "water cooperative for regulating watercourses and building dams in the Görlitzer Neisse river basin" was founded in 1900. - The other five are:
- Grünwalder water ( Mseno ) ( storage volume 2.7 million m³)
- Harzdorf ( Harcov ) (storage volume 0.63 million m³)
- Friedrichswald / Schwarze Neisse ( Bedrichov dam ) (storage volume 2.0 million m³)
- Görsbach / Gierschbach (storage volume 0.5 million m³) (was still in planning in 1906)
- Mühlscheibe / Scheidebach ( Mlynice ) ( storage volume 0.25 million m³)
The Görsbach dam was probably not built. No suitable dam can be found in lists of Czech dams today.
Literature (source)
- Dam systems of the water cooperative to regulate the watercourses and construction of dams in the river basin of the Görlitzer Neisse in Reichenberg. Verlag der Wassergenossenschaft, Reichenberg 1906.
