The Heimbach reservoir is not actually a dam, but a so-called compensation basin. It serves to compensate for the fluctuations in the water level caused by the intermittent operation of the peak current power plants in the Urft and Rurtalsperre. These two hydropower plants usually only produce electricity when larger demand peaks are expected or measured in the general high-voltage network, which is usually the case in the mornings of working days. In the rest of the time the machines are idle and therefore no water inevitably flows into the reservoir. The usable space of the reservoir is therefore filled with water within a few hours when the power plants are in operation. Then the storage volume is dosed and drained in such a way that the underflow of the river bed of the Rur is continuously exposed to an amount of water that meets the ecological requirements of the flowing water and the requirements of other requirements. Source: nationalparktor.de/nationalparkstadtheimbach/wasserinfos/wasserinfos.html
August 6, 2020
"... The Heimbach dam in Heimbach (Eifel), together with the Obermaubach reservoir, serves as a compensation basin for the hydropower plants of the Urfttalsperre (Heimbach power plant) and the Rur dam two larger dams are being built. ... "
September 24, 2020
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