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Rödelbach
The Rödelbachgraben, usually called the Rödelbach and also incorrectly referred to as the Rieschengraben, is a river which was altered for mining purposes. It is the oldest fully functioning part of the Lower Harz Pond and Ditch System in the Harz Mountains of Germany. The ditch was first mentioned in the records as the ''Oberer Rödelbachgraben'' in the year 1610.
== History ==
Neither the builder nor the exact date of construction are known. Due to the mining activity within the Rödelbach valley near Straßberg in the 16th and 17th centuries, it was probably built in the late 16th century.
The first documented mention in the Straßberg land register in 1610 records the structure as ''oberer Rödelbachgraben mit Dorfrösche'', the name changed from Röschengraben to Rödelbach. Originally it was fed from the first Kiliansteich, later the Lower Kiliansteich – today part of the Kiliansteich Reservoir. The water then went directly to the Maliniusteich as well as via the Frankenteich to the Maliniusteich. Here part of the water flowed around the silting up zone where it was united with another headwater, probably a natural stream. From the outlet of the Maliniusteich the water flows along the Straßberger Mühlengraben into the River Selke.
In renovating the Kiliansteiche and the associated building of the Kiliansteich Dam and reservoir, the retention of the channel was secured at a constant flow rate of .
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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