The river soon changes its northwesterly flow for a due westerly direction, but after receiving the Saane or La Sarine it turns north until it nears Aarberg.

There, in one of the major Swiss engineering feats of the 19th century, the Jura water correction, the river, which had previously rendered the countryside north of Bern a swampland through frequent flooding, was diverted by the Aare-Hagneck Canal into the Lac de Bienne.

The lake absorbs huge amounts of eroded gravel and snowmelt that the river brings from the Alps, and the former swamps have become fruitful plains: they are known as the "vegetable garden of Switzerland".

It now turns due north, and soon becomes itself a tributary of the Rhine, which it even surpasses in volume when the two rivers unite downstream from Koblenz (Switzerland), opposite Waldshut in Germany.

On May 26, 2022, Indonesia West Java Governor Ridwan Kamil's eldest child, Emmeril Kahn Mumtadz,[12] was declared missing after being swept away by the river current.

[16] The funeral procession of Emmeril “Eril” Kahn Mumtadz took place in the family's burial ground located in Cimaung, Bandung regency, West Java.

[17] Soon after news about Eril's body brought back to his home, Indonesian netizens review bombed Aare River's Google listing, leaving negative comments and one-star ratings as if the waterway was fully to blame for the tragedy.