Lachsbach

Lachsbach
Location
Country	Germany
State	Saxony
Region	Saxon Switzerland
Physical characteristics
Source
• location	Start: Confluence of the Sebnitz and the Polenz near Porschdorf
• coordinates	50°56′36″N 14°08′06″E / 50.9432°N 14.1349°E / 50.9432; 14.1349
• elevation	142 m above sea level (NHN)
Mouth
• location	Near Wendischfähre into the Elbe
• coordinates	50°55′26″N 14°07′48″E / 50.9238°N 14.1299°E / 50.9238; 14.1299
• elevation	127.8 m above sea level (NHN)
Length	3.0 km (1.9 mi), with the Polenz 34.3 km (21.3 mi)1
Basin size	269 km2 (104 sq mi)1
Discharge
• location	at Porschdorf I gauge
• average	3.02 m3/s (107 cu ft/s)
• minimum	Average low: 0.860 m3/s (30.4 cu ft/s)
• maximum	Average high: 30.8 m3/s (1,090 cu ft/s)
Basin features
Progression	Elbe→ North Sea

The Lachsbach, also called the Rathmannsdorfer Bach, is a river of Saxony, Germany. It is the largest, right-hand tributary of the Elbe in Saxon Switzerland.

The Lachsbach is formed by the merger of its headstreams, the Sebnitz (left, about half the size) and Polenz (right, rather longer) in the Elbe Sandstone Mountains near Porschdorf. The combined confluence section of the two rivers was first recorded in 1543б as die beyde wasser ("the two waters"), a description no longer common today. After only 3 kilometres (2 mi), the Lachsbach empties into the Elbe above Prossen's winter port near Wendischfähre.