Hengsteysee

The lake serves as a reservoir for a pumped storage power plant.

Hengstey is a 1929 finished and operated by Ruhrverband reservoir during the Ruhr between the cities of Hagen, Dortmund and Herdecke in North Rhine -Westphalia, Germany. He is one of six Ruhr reservoirs and named after the adjacent district of Hagen Hengstey.

The lake begins during the Ruhr approximately level with the Syburger Ruhrbrücke than a mile below the mouth of Lenne, its end is the dam of the hydroelectric power plant Hengstey with a water level of 4.6 m. North of the Hengsteysees rises as part of the Ardeygebirges including the Klusenberg.

The good 4 km long lake has a storage capacity of about 3.3 million m³.

Functions of the lake

River WWTP

Planned and created Hengsteysee was primarily as a " flow sewage treatment plant " for fine cleaning of the Ruhr and Lenne shortly before inflowing water. The Lenne was since industrialization a strong acid and ferrous industrial Ruhr river and the water was needed for the people of the Ruhr area (see also Ruhr Pollution Control Act of 1913). The main reason for the improvement of the water of the impoundment only slowly flowing Ruhr are biological self-cleaning and sedimentation. The reservoir is silted by and must be dredged at intervals of several decades.

Although the water quality of Lenne and Ruhr has improved towards the end of the 20th century, the lake water purification continues to serve.

Sediment trapping

Hengstey is referred to as the sediment catcher. The Lenne performs much river gravel (gravel ) with him, which was transported further from the Ruhr before Stauseebau, but now deposited directly beneath the mouth of Lenne and in the further course in Hengsteysee.

Hydropower

On Hengsteysee are two hydroelectric power plants, both of which are operated by RWE Energy.

On the north shore of the lake the Koepchenwerk uses - a large pumped storage power plant on Herdecker urban area - the difference in height of the Ruhr slope between an artificial upper basin and the lower basin serving as Hengsteysee for energy storage. The lake water is there in times of low power consumption (at night) with electricity from other power plants pumped up the mountain and then drained again during the day at peak load times. The daily operation of the pumped storage water level of the Hengsteysees may vary by almost a meter within a short time. This has important consequences for the Seeökologie. The bank vegetation is correspondingly reduced and many, usually on the banks or in floating nests nesting birds can only do this very difficult or do with human assistance. In addition, smaller living matter (including fish) despite screening devices from the suction of the pump and do not survive the power plant operations.

On defense, which closes the Hengsteysee, RWE operates the Laufwasserkraftwerk Hengstey, which was renovated in 2007 and 2008, supplemented by a fish migration stage. This plant produces a maximum output of 3,300 kilowatts. The actual defense of four cylindrical locks can be opened at high tide, a lock system allows smaller boats may pass.

Early in the morning can be seen on the banks of the daily fluctuation of the water level.

The Laufwasserkraftwerk Hengstey forms the reservoir completion.

Recreation

The lake is now used in particularly recreational use. Around the lake leads a foot and cycle path ( about 6.5 km), on the north side between Niedernhof and the Dortmund road a few hundred meters was for a time blocked due to falling rocks, but was now released. The route on the south bank is part of the Ruhr Valley Cycle Route. Especially on weekends in the summer, the lake is the destination of many day-trippers from the nearby cities of the Ruhr.

In the warm season the tour boat departs " Freiherr vom Stein " between the pier " On Schiffswinkel " in Herdecke and the Lenne mouth. At the north end of the lake there is a boat rental ( pedalos and rowing boats).

In Dortmund city area directly above and at the beginning of the lake lies the much-visited Hohensyburgstraße ( castle ruins, monument, viewpoint, casino ). The serpentine to Hohensyburgstraße and Syburger bridge over the Ruhr and the north end of the Hengsteysees since the 1920s venue and meeting place of motorsport. As a destination, especially for motorcyclists known is the parking lot at the south end of the bridge with a " biker " said snack bar.

On the south side of the lake is the old Hagen pool Hengstey.

In walking distance of over 2.5 km downstream of the similarly large and comparable used Harkortsee begins.

Hengstey belongs to topics Route 12 Route of Industrial Heritage - history and present of the Ruhr.

Water

In Hengsteysee is a water sports area. On the lake will be sailed, rowed and went canoeing. Located on the lakeshore are several sports clubs: sailor Community Hengsteysee eV ( SGHS ), University Sailing Club Dortmund eV ( USC), sailing group of disabled sports community Hagen (BSG ) with boat house on the lake road, sailing club Syburg e V. Dortmund, canoeing club Hagen 1953 eV and free sports club Dortmund 1898 ( FS 98). For safety on the water DLRG groups of the district Dortmund care (water rescue station at the Hengsteystraße ) and the OG Hagen (water rescue station on the lake road ).

For swimming and bathing but Hengsteysee is unsuitable - he's not a bathing water, the water quality of the Ruhr will not allow a permit. The health department also warned explicitly against since have had to seek medical treatment in September 2008, several people after contact with the seawater.

Because of the sometimes low water depth (in some places below 50 cm) and mainly due to the summer proliferation of Elodea ( Elodea ) since the late 1990s, the water sports on the Hengsteysee is severely limited.

Others

Construction on the lake and the road bridge leading over the lake began in 1926. Early as in 1927 overthrew the bridge, still under construction a.

Located in Hengsteysee about 150 meters south of the power station are the remains of the ancient castle of the lords of Lower Mayrhofen Ovelacker.

Known on an island in the lake opposite the Seeschlösschen on the north shore, also known as radio castle is the Mouse Tower, the bridgehead was a pedestrian suspension bridge over the Ruhr before the construction of the dam. The Seeschlösschen, called the time of its construction Villa Lower Mayrhofen, was built by the screw manufacturer Wilhelm Funke. Hence the name of Funkenburg derived. The Mouse Tower was his time at which the servants of the coachman Funke family lived not only part of the bridgehead, but part of a building and stables and coach house were located.

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