| Röslau | |
|---|---|
| Location | Upper Franconia (Bavaria), Karlovarský kraj (Czech Republic) |
| Reference no. | DE: 53212 |
| Length | 37.59 km |
| Source | on the eastern slope of the Schneeberg |
| Source height | 915 m |
| Mouth | near Fischern (part of Markt Schirnding) with 2 arms into the Eger; main arm: |
| Mouth height | ca. 440 m |
| Descent | ca. 475 m |
| Basin | Elbe |
| Progression | Eger → Elbe → North Sea |
| Right tributaries | Kössein |
| Small towns | Wunsiedel, Marktredwitz, Arzberg |
| Villages | Tröstau, Schirnding |
The Röslau or Rösla is a right-hand tributary of the Eger River in northeast Bavaria in Germany.
It is formed from several small veins that come together on the eastern slope of the Schneeberg west of the Vordorf Mill (Vordorfermühle) at Trostau in the Russel forest division.
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A spring, impounded by granite rocks, was tapped by the town of Wunsiedel in 1930 at a height of 915 m above NN. The source is the start point of the 44 km long Röslau Path, which was created in 1980 by Fichtelgebirge Club. The Seenweg path from Weißenstädter See to the Fichtelsee runs past the spring.
After leaving the steep slopes and high forest on the Schneeberg the Röslau runs past the Vordorf Mill, turns initially southeast to Leupoldsdorf and Tröstau, grazes Wunsiedel and swings gradually in an easterly and northeasterly direction. Along the way it picks up numerous brooks from the region of the Platte, Hohe Matze and Kösseine. Near Thölau the great railway bridge on the Marktredwitz to Hof line stretches across the Röslau valley. Next it reaches Lorenzreuth and Seußen, where it is reinforced by the Kössein. It flows through the narrow valley of the Gsteinigt to Arzberg and snakes through pastureland to the Schirnding. East of the village it forms Germany's boundary with the Czech Republic until it discharges into the Eger near Fischern.
Since the Middle Ages the river was used to drive the many hammer mills (Hammerwerke) and corn mills (Mahlmühlen) along its length. The town of Wunsiedel also used the watercourse from the 16th century for timber rafting.
The river was first mentioned quite late on, in 1403, under the name of Rosslin and then under various spellings. Colloquially it is called the Riasla and, on official maps, the Röslau. Recent research suggests the name combines words meaning "in lively motion, stirring" and "flowing" or "streaming".