Local flooding and/or erosional damage along the rivers.
Stay informed on the situation. Secure and/or move assets away from vulnerable areas (car, caravan along rivers/streams, basements). Cleaning of drainage paths and culverts is recommended. Keep away from rivers and streams with high flow.
The water discharge is at yellow level the Drammen river basin, and expected to stay so. Consider also the orange flood warnings for lakes Krøderen and Sperillen.