Aller (Germany)

Aller
The canalised and poplar-lined Aller in the Drömling near Wolfsburg-Vorsfelde
Path of the Aller river [1]
Location of mouth
Location
Country	Germany
States	Saxony-Anhalt and Lower Saxony
Reference no.	DE: 48
Physical characteristics
Source
• location	in Eggenstedt near Seehausen in the Magdeburg Börde
• coordinates	52°06′09″N 11°14′01″E / 52.1024528°N 11.2337028°E / 52.1024528; 11.2337028
• elevation	130 m above sea level (NN)
Mouth
• location	Weser near Verden
• coordinates	52°56′45″N 9°11′08″E / 52.945825°N 9.1856139°E / 52.945825; 9.1856139
• elevation	10 m above sea level (NN)
Length	214.8 km (133.5 mi) [1]
Basin size	15,721 km2 (6,070 sq mi) [1]
Discharge
• average	118 m3/s (4,200 cu ft/s)[2]
Basin features
Progression	Weser→ North Sea
Landmarks	Cities: Wolfsburg Large towns: Gifhorn, Celle, Verden Small towns: Oebisfelde-Weferlingen, Rethem Villages: Wefensleben, Ingersleben, Müden, Wienhausen, Oldau, Winsen, Hodenhagen, Hülsen, Westen
Tributaries
• left	Oker, Fuhse, Wietze, Leine, Alpe, Wölpe
• right	Kleine Aller, Ise, Lachte, Örtze, Meiße, Böhme, Lehrde, Gohbach
Navigable	117 km (73 mi); from Celle Class II, from Verden Class III

The Aller (pronounced [ˈalɐ] ^ⓘ) is a 215-kilometre-long (134 mi) river in the states of Saxony-Anhalt and Lower Saxony in Germany. It is a right-hand, and hence eastern, tributary of the Weser and is also its largest tributary. Its last 117 kilometres (73 mi) form the Lower Aller federal waterway (Bundeswasserstraße). The Aller was extensively straightened, widened and, in places, dyked, during the 1960s to provide flood control of the river. In a 20-kilometre-long (12 mi) section near Gifhorn, the river meanders in its natural river bed.