Kiliansteich

Kiliansteich
Location	Landkreis Harz
Coordinates	51°36′22″N 11°01′15″E / 51.60611°N 11.02083°E / 51.60611; 11.02083
Construction began	1610, rebuilt 1989-1994
Dam and spillways
Impounds	Büschengraben
Height (foundation)	24.6 m (81 ft)
Height (thalweg)	22.9 m (75 ft)
Length	210 m (690 ft)
Elevation at crest	442.23 m (1,450.9 ft)
Width (crest)	4 m (13 ft)
Dam volume	93,000 m3 (3,300,000 cu ft)
Reservoir
Total capacity	1.26×10^6 m3 (44×10^6 cu ft)
Active capacity	1.19×10^6 m3 (42×10^6 cu ft)
Catchment area	3.9 km2 (1.5 sq mi)
Surface area	17.3 ha (43 acres)
Normal elevation	440.5 m (1,445 ft)

The Kiliansteich (literally "St. Kilian's Pond") is one of the oldest reservoirs in Germany. The reservoir is located near Straßberg (Harz) in the German state of Saxony-Anhalt and supplies drinking water. It impounds the Büschengraben stream. The lake is part of the heritage area (Flächendenkmal) of the Lower Harz Pond and Ditch System.

The reservoir has a rockfill dam with a watertight clay core that sits on a shale bedrock.

Originally there were four small ponds in a row on the site of the present-day reservoir that had been built for the mining industry. Two of those were broken in 1901 and 1944 and all were in a poor condition. As a result, from 1989-1994 a new, higher dam was built at the site of the lowest dam; the two middle ponds were removed and the upper one, the Upper Kilian Pond (Oberer Kiliansteich), built in 1703, was upgraded into a pre-dam (Vorsperre).

Originally laid as a drinking water reservoir, the lake is used today for flood and drought protection.

The dam on the original "Lower Kilian Pond" (Unterer Kiliansteich) was about 10 m high and had a retaining capacity of 165,000 m³. During the course of renovation the old wooden bottom outlet was salvaged on 25 September 1990 as the result on an initiative by Erika and Siegfried Lorenz. Following long-term conservation work at the Harzwasserwerken in Clausthal-Zellerfeld, who paid for the cost of transports and conservation, it was returned on 19 August 2010 to Straßberg. The wooden raceway is now a museum piece in the Glasebach Pit.

• List of dams in Germany

Talsperren in Sachsen-Anhalt, Autorenkollegium, Hrsg. Talsperrenmeisterei des Landes Sachsen-Anhalt 1994

Wikimedia Commons has media related to Kiliansteich.

• Kiliansteich at Structurae
• Kiliansteich Dam
• Kiliansteich Dam (2 photos)
• Saxony-Anhalt Department of the Environment: Dams according to § 88 of the State Water Law