Rote Weißeritz

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Rote Weißeritz
The Talsperre Malter (Malter reservoir)
The Talsperre Malter (Malter reservoir)
Origin Eastern Ore Mountains
Mouth Weißeritz
Basin countries Germany
Length 36,5 km
Source elevation 787 m
Basin area 161,2 km²

The Rote Weißeritz (Red Weißeritz) is a river in Saxony which drains the eastern Ore Mountains. It is a right tributary of the Weißeritz and 36,5 km in length. The source of the river is next to Altenberg at about 787 metres elevation.

The river has a fall of 606 metres on its north-western directed way running through Schmiedeberg, the district town of Dippoldiswalde and ending in Freital where it forms the Weißeritz together with the longer tributary Wilde Weißeritz. The Malter reservoir was build between 1908 and 1913 between Dippoldiswalde and Freital for flood protection reasons after the 1897 floods.

The deep valley is an important way for traffic and transport. It is a historic inlet to a major mountain pass over the Ore Mountains (Graupener Pass). The Weisseritz railway runs through the Weißeritz valley up to Kurort Kipsdorf getting over about 350 metres in altitude difference. The Bundesstraße 170 takes course at the river's banks between Dippoldiswalde and Bärenfels where it leaves the valley by climbing in three hairpin turns.

The Rote Weißeritz caused massiv destruction during the 2002 European floods. Housings and esspecially traffic infrastructure was area-wide destroyed or damaged. The flood reserve of the Malter reservoir was completely spread. The area around the source of the river received a 24-hours-precipitation of up to 312 mm in height.

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