Aley River

Course of the Alei ( Алей ) on the left tributary of the Ob

The 858 km long Alei (Russian Алей, also Alej ) is a left tributary of the Ob in Siberia (Russia, Asia).

The Alei ( in the upper reaches: Eastern Alei, Russian Восточный Алей / Vostochny Alei ) rises in the northwestern foothills of the Altai on the border with Kazakhstan. In the further course it flows through highly meandering the steppes of the northern Altai foothills in the Altai region and ends in the village of Ust- Aleika south of Barnaul in the Ob. Near the mouth of the river is about 70 m wide and 1.5 m deep.

The catchment area covers 21,100 km ². The mean monthly water levels at Chabasino is 46 km off the mouth of 34.0 m³ / s ( in February only an average of 3.5 m³ / s, in May, however, an average of 144.1 m³ / s).

The Alei freezes from November to April. Its water is used for irrigation of agricultural land.

At Alei are the towns Rubtsovsk and Aleisk.