Alpe (Aller)

The Alpe is a left tributary of the Aller. Its source lies between the villages of Dudensen and Nöpke, both within the town of Neustadt am Rübenberge. It initially crosses the Dudensen Bog and flows along the edge of the Bog Lichtenmoor and past Rethem Bog. In the 1970s it lost its natural character, it was straightened and, in places, canalised. The Steimbker Dorfgraben, a drainage ditch joining it form the left is very heavily polluted (water quality class III–IV). The Alpe itself has a good overall water quality (class II = moderately polluted).[2] Before the town of Rethem the Weiße Graben ("White Ditch") joins the Alpe along with the Wölpe. In Rethem the Alpe then discharges into the Aller.

Alpe
Location
Country	Germany
State	Lower Saxony
Physical characteristics
Source
• location	southwest of Dudensen
• coordinates	52°35′34″N 9°25′12″E
• elevation	46 m above sea level (NN)
Mouth
• location	in Rethem into the Aller
• coordinates	52°47′40″N 9°21′47″E
• elevation	18 m above sea level (NN)
Length	30.5 km (19.0 mi) [1]
Basin size	252 km^2 (97 sq mi) [1]
Basin features
Progression	Aller→ Weser→ North Sea
Landmarks	Small towns: Rethem Villages: Dudensen, Laderholz
Tributaries
• left	Laderholzer Moorgraben, Steimbker Dorfgraben, Moorbeeke, Alpengraben, Wölpe
• right	Lutterer Bach, Neuer Eilter Graben, Schotengraben

The Alpe is a river of Lower Saxony, Germany.

See also

• List of rivers of Lower Saxony

References

1. Environmental map service of Lower Saxony (Umweltkartendienst des Niedersächsischen Ministeriums für Umwelt, Energie und Klimaschutz)
2. NLWKN water quality of the Alpe