Diemelsee

The Diemelsee or Diemel Reservoir (German: Diemelstausee) is a reservoir with a surface area of 1.65 km²[1] and about capacity of 19.9 million m³[1] on the River Diemel in the counties of Waldeck-Frankenberg in North Hesse, and Hochsauerlandkreis, Westphalia, Germany.

This article is about the reservoir. For other uses, see Diemelsee (disambiguation).
Diemelsee, Diemel Reservoir
Diemelstausee, Diemeltalsperre
The Diemel Dam: dam and reservoir, compensating basin (Ausgleichsweiher) and power station. Foreground: the village of Helminghausen. Left: the Eisenberg
LocationWaldeck-Frankenberg (HE), Hochsauerlandkreis (NW)
Coordinates51.37222°N 8.72389°E / 51.37222; 8.72389
Construction began1912 to 1914 and 1919 to 1923[1]
Dam and spillways
ImpoundsDiemel, Itter
Height (foundation)42 m[1]
Height (thalweg)36.2 m[2]
Length194 m[1]
Width (crest)7 m[1]
Width (base)31 m[2]
Dam volume72,000 m³[2]
Spillway capacity113 m³/s
Reservoir
Total capacity21.75 M m³
Active capacity19.9 M m³[1]
Catchment area103 km²
Surface area1.65 km²[1]
Maximum length4 km (Diemel arm), 3.1 km (Itter arm)
Maximum width300 m
Normal elevation376.2 m above sea level (NHN)
Installed capacity1.04 MW
Dam and power station from the north

It is part of the Diemeltalsperre hydropower system (DiT)[3] comprising the Diemel Dam, the equalizing basin, the power plant and the reservoir itself, owned by the Federal Waterway and Navigation Authority and managed by its Hann. Münden office. The Diemel Reservoir, along with the Edersee is part of the water regulation structure in the catchment area of the River Weser.

Location

The Diemelsee is located a few kilometres northeast of the Upland in the northeastern foothills of the Rothaar Mountains that lie in the northeast of the Rhenish Massif. It lies mainly within the county of Waldeck-Frankenberg, its smaller northern section and its dam belonog to the county of Hochsauerlandkreis. In is also within the Diemelsee Nature Park between Willingen and Marsberg on the territory of Diemelsee and the borough of Marsberg on the River Diemel and its tributary, the Itter. Its dam stands about 500 metres south of the village of Helminghausen (southwest of Marsberg). The only shoreline village is Heringhausen.

The Diemelsee lies in a forested Central Upland countryside, whose highest point in the vicinity of the reservoir is the Köpfchen (ca. 610 m above sea level (NHN); west of the Itterarm in the west). Immediately east-southeast of the dam rises the Eisenberg (594.6 m) and a few kilometres to the south of the dam is the mountain of Koppen (715.1 m).

Panorama
View of St. Muffert over the Diemelsee
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See also
  • List of dams in Germany

References
  1. Wasser- und Schifffahrtsamt Hann. Münden: Diemeltalsperre und andere Talsperren, auf wsv.de.
  2. Paul Gerecke: Die Diemeltalsperre, in Zeitschrift für Bauwesen, auf opus.kobv.de (PDF 4,56 MB)
  3. DIN 4048-1 Wasserbau, Begriffe, Stauanlagen, Januar, 1987

Literature
  • Peter Franke, Wolfgang Frey: Talsperren in der Bundesrepublik Deutschland. Herausgegeben vom Nationalen Komitee für Grosse Talsperren in der Bundesrepublik Deutschland (DNK) und Deutscher Verband für Wasserwirtschaft und Kulturbau e. V. (DVWK), Systemdruck-GmbH, Berlin, 1987, ISBN 3-926520-00-0.
  • Paul Gerecke: Die Diemeltalsperre. In: Zeitschrift für Bauwesen, 75th annual, 10th–12th issue (Ingenieurbauteil), 1925, pp. 93–104.
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