Innerste Dam
| Innerste Dam | |
|---|---|
 | |
| Country | Germany |
| Location | Lower Saxony |
| Coordinates | 51°54′41″N 10°17′03″E / 51.91139°N 10.28417°E |
| Construction began | 1963 |
| Opening date | 1966 |
| Dam and spillways | |
| Height | 40 m |
| Length | 750 m |
| Width (crest) | 8 m |
| Dam volume | 850,000 m³ |
| Reservoir | |
| Total capacity | 19.26 million m³ |
| Catchment area | 97 km² |
| Surface area | 139 ha |
The Innerste Dam (
hydroelectric power
generation. The average annual discharge through the Innerste Dam is 60 million m³.
Structures
The Innerste is an
earth-fill dam with multiple, external, asphaltic concrete layers. It has an inspection gangway along its whole length on the upstream apron. In front of the upstream base of the dam is a shaft spillway (a flood overflow tower), into which also the bottom outlet is integrated. The water of the Innerste Dam can be pumped via a 4.6 km long diversion channel to the Grane Dam further east, where it can be used for water treatment
. From 2003 to 2005 the reservoir was completely emptied and renovated, especially the asphalt sealing and the bottom outlet. This work was finished in September 2005.
Flood control
Because the reservoir only has a limited flood control capacity (i.e. its capacity is relatively small in relation to the annual discharge), it can only check flooding within certain limits. The flood relief facility (spillway) is used about every two years. Nevertheless, even when the Innerste Dam overflows, the level of retention significantly reduces and delays flooding.
Recreation
The
Innerste Valley Railway
is an old railway line, that had a halt by the Innerste Dam.
Gallery
-
Shaft spillway in the reservoir -
Shaft spillway during renovation work -
Reservoir at low level -
Innerste at low water -
View of the Innerste Dam
See also
- List of dams in the Harz
- List of reservoirs and dams in Germany
Sources
- Peter Franke; Wolfgang Frey (1987), Talsperren in der Bundesrepublik Germany (in German), Berlin: Systemdruck, ISBN 3-926520-00-0
External links
Wikimedia Commons has media related to Innerstetalsperre.
- Harzwasserwerke.de with a link to current dam data
- Innerste Dam in the Online Harz Travel Guide
| Authority control databases: Geographic |
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