This part of the Glomma waterway stretches about 8 km. Its current here is mostly relatively strong though there are several large coves and backflows. The river is surrounded mixed forests and agricultural land. Housing is relatively sparse.
The northern end of this stretch begins at the Solbergfoss Power Station forming both a migration barrier for fish and a transport problem for people. The boundary between Askim and Spydeberg municipalities runs in the middle of the river. About 6 km downstream from Solbergfoss the river runs under the Smaalenene Bru Bridge carrying the E18 motorway. At the southern end stands the Kykkelsrud Power Station. The two power stations ensure that boat use is limited to just this stretch. There are several marked reefs in the river that boat users must be aware of.