Erpe (Spree)

Erpe
Neuenhagener Mühlenfließ
The Erpe (upper right to lower left)
Location
CountryGermany
StateBrandenburg
Physical characteristics
Source 
  locationWerneuchen, Brandenburg
  coordinates52°39′18″N 13°45′37″E / 52.6550545°N 13.7601816°E / 52.6550545; 13.7601816
  elevation77.5 m (254 ft)
Mouth 
  location
Berlin-Köpenick
  coordinates
52°27′01″N 13°35′40″E / 52.450278°N 13.594444°E / 52.450278; 13.594444
  elevation
32.3 m (106 ft)
(45.2 m (148 ft) altitude difference)
Length31.8 km (19.8 mi)
Basin size216 km2 (83 sq mi)
Basin features
ProgressionSpreeHavelElbeNorth Sea
Tributaries 
  rightZochegraben

The Erpe is a tributary of Spree River in Brandenburg and Berlin, Germany. The upper third is also known als Langes Elsenfließ ("Long Lizzy-Flow"), the lower two-thirds for about half a century were noted as Neuenhagener Mühlenfließ. Previously they had been one of several Mühlenfließe ("Mill Flows") without a specification. The course itself is quite natural, but it suffers pollution from a purification plant. Like the entire landscape in Brandenburg and Berlin, the course of the river is also shaped by the last ice age.