Hameln Weir and Lock

The barrage Hameln in the city of Hameln is the only barrage in the Upper Weser. It consists of fixed weirs, the upper weir and the lower weir. Since 1733, the river island (Werder), which is located between the Upper and Lower Weir, a (repeatedly renewed) lock for shipping, which today in the area of ​​responsibility of the waterway and shipping office Hann. Münden is located. The slope of the barrage is used since the 15th century by Hameln watermills. Today, Stadtwerke Hameln operates the hydroelectric power plants Alte Schleuse and Pfortmühle to generate energy. Approximately 12 million kWh of energy, equivalent to five percent of the demand in Hamelin, is produced annually by these hydroelectric power plants. The operators may only divert a maximum of 112 m³ / s of Weser water or so much for the power plants that the upper weir does not fall dry.
Source (Wikipedia)

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