Hellik Teigen avd. Hokksund - fragmentering

Permit and control reports (Norwegian only): Permit, Control report 2005, Control report 2006, Control report 2007, Control report 2010, Control report 2011, Control report 2017, Control report 2019, Control report 2021
Monitoring report for the water body: 2020, 2020, 2021, 2021, 2022, 2022, 2023, 2023

Authority: Statsforvalteren Østfold, Buskerud, Oslo, Akershus