Zillierbach Dam
The Zillierbachtalsperre or dam Zillierbach is a 1934-1936 built from the dam, waterworks and reservoir existing dam in the eastern part of the Harz in Saxony -Anhalt between Upper am Brocken and Wernigerode in the Harz district. Its around 45 m high dam impounds Zillierbach on for about 24 acres Zillierbachstausee.
The dam is used for flood protection of below their dam, among other things lying on Zillierbach towns, and with its waterworks for drinking water supply of many near villages, so it is with the surrounding woods in a large-scale drinking water protection area.
- 4.1 Location
- 4.2 Data
Geographical location
The Zillierbachtalsperre located in the Harz Nature Park / Saxony- Anhalt. It extends between Drei Annen Hohne in the southwest and Nöschenrode in the north-northeast, which lie on Zillierbach and belong to the town of Wernigerode, and Elbingerode in the southeast, which is one away from the dam and creek to the city Upper am Brocken.
Dam
Location
The shut-off of the dam is about 3 km southwest of the lying on the main road 244 settlement Voigt Stieg ( Wernigerode ) directly southwest of the Peter Stone ( 498 m above sea level. NN ). Centered on the wall is the gate valve house with the operating facilities.
Data
The gravity dam was built from 1934 to 1936. It is about 38 m above the valley floor and 45 m above the foundation level high. The crown building is located on 473.8 m above sea level. NN, it is 186.5 m long and 3.50 m wide. The building volume contains approximately 54,400 m³ of reinforced concrete with grout.
History
Planning, construction and World War II
The plan to build a dam on the Zillierbach, originated in 1931. At the start of construction in 1934, cult objects were excavated from the era. First, an arch dam was planned; during construction planning was changed. The building material came with a shuttle train from Drei Annen Hohne. The aggregates could be obtained locally. For the formwork own sawmill was built at the dam gate. The estimated 3.31 million Reichsmark were provided. The main work ended in June 1936.
When excavation for the dam workers salvaged in 1935, below the Peter Stein a consecration Fund from the Bronze Age around 1000 BC, which is on display in the local museum in Wernigerode.
In the last days of World War II (1939-1945), the SS planned the destruction of the dam, which could be by notice of bediensten Jam Master prevented by the Allies.
Repair and modernization
62 years after completion of the dam, its stability was no longer guaranteed. Likewise, no longer corresponded to the technical equipment to the prior period. Therefore, it was placed from November 1998 to May 2000 repaired with a financial volume of about 7 million DM and modernized.
The mural crown was increased by 1 m and widened to 3.50 m. The parapet walls have been replaced by a railing. The valve house on the crown got a 1.5 m wide use. The house had until then all settings are made by hand. In its construction (drainage) were placed in the wall between the wall segments drainage channels, the sintered gradually. Vertical holes in the wall are now serving the drainage. The mural crown may be crossed since the late repair of pedestrians.
Waterworks
Approximately 150 m below the dam is in the valley of Zillierbachs the water plant, which began operating in 1937. While the dam modernization (1998-2002), it was modernized. Until then, the data were checked only locally; Therefore, automation has been installed. The waterworks serves the potable water supply of Elbingerode, misery, Schierke, partially Rübeland and Wernigerode. The clean reservoir water is treated at the waterworks. The mean annual water discharge is about 2.92 million m³.
Reservoir
Location
The Zillierbachstausee is within the scope of its Southwest part on the border of the cities of Upper am Brocken Wernigerode and his north-eastern part belongs entirely to Wernigerode. It is located centrally between the main road 244 ( Nöschenrode - Elbingerode ) in the east and the national road 100 ( Drei Annen Hohne - Hasserode ) in the west, extending some distance from the dam. To the northwest lies the Wellborn head ( 555.1 m above sea level. NN ), southeast of the Ortberg ( 550.1 m above sea level. NN ) and northeast of the Peter Stone ( 498 m above sea level. NN ). The jammed river is the Zillierbach, a southeast tributary of the Holtemme in the catchment area of the Elbe; also open six small streams, some of which but not all year lead water into the reservoir. In the narrow southern part of the lake rises in the east bank near an island, growing on the shrubs and trees, which is at low water to a erwanderbaren Peninsula.
Data
The lake is about 24 hectares. It extends in the southwest-northeast direction to about 1.4 km in length and is up to 300 m wide. He has about 2.63 million m³ storage space and 2.83 million m³ total storage space. Its water level is at 470.19 m above sea level. NN and its catchment area is approximately 10.7 km ². The mean flow is about 0.15 m³ / s
Leisure
Because of the drinking water protection area should not be bathed in the lake. The umwaldete reservoir can be, for example, from Drei Annen Hohne, Elbingerode and Wernigerode Coming hiked and hike around near the shore on an approximately 4.5 -mile loop trail that also leads over the dam. A side road leads to the dam located near the Peter Stone, from whose vantage point the view of the dam and reservoir is possible. On the rocky hilltop of the dam modernization were removed from the local forest administration of window trees in the period.