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Ruhlander Schwarzwasser
The Ruhlander Schwarzwasser in Jannowitz
Location
Country	Germany
States	Saxony and Brandenburg
Reference no.	DE: 53818
Physical characteristics
Source
• location	Source region: in the Bernsdorf municipal forest near Heide, part of Wiednitz
• coordinates	51°23′48″N 14°03′25″E / 51.3968°N 14.0570°E / 51.3968; 14.0570
• elevation	146 m above sea level (NN)
Mouth
• location	near Ruhland into the Black Elster
• coordinates	51°27′50″N 13°48′56″E / 51.4638°N 13.8156°E / 51.4638; 13.8156
• elevation	95 m above sea level (NN)
Basin size	269 km²
Basin features
Progression	Black Elster → Elbe → North Sea
River system	Elbe
Tributaries
• left	Saleskbach

The Ruhlander Schwarzwasser is a left-hand tributary of the Black Elster in the east German states of Brandenburg and Saxony.

It rises in the Bernsdorf Forest (Bernsdorfer Gemeindewald) near Heide [de], a village in the borough of Wiednitz (today part of Bernsdorf). As it makes its way westwards, this small river flows partly through the state of Brandenburg and partly through Saxony. In the Ruhland Heath (Ruhlander Heide) it forms the boundary between the two states. There it is also joined from the left by the Saleskbach, which comes from the heath villages of Cosel [de], Grüngräbchen [de] and Großgrabe [de; hsb].

The Schwarzwasser then flows northwards through Jannowitz [de] and Arnsdorf [de]. It discharges into the Schwarze Elster near the town of Ruhland.

In Arnsdorf the Sieggraben dyke branches off on the left. It also enters the Black Elster, below Ruhland.

• List of rivers of Brandenburg
• List of rivers of Saxony