The river runs through the villages of Hortemo, Nodeland, Volleberg, Tangvall, Åros, and Høllen.

The steep slopes down from the moors can create short and intense flood rapids.

[1] The Songdalselva flows into the sea between the villages of Høllen and Åros in Kristiansand municipality.

Water quality improved by the time the sewer was led through pipes and cleansed before discharged to the sea.

Today's (2016) environmental issue is mainly illegal garbage disposal and plastic waste from farming, accumulation along the banks and flowing into the ocean when the river is flooding.