Consent from NRW (Flood Risk Activity Permit) or the Local Authority (Ordinary Watercourse Consent) may be required for some types of work in watercourses and their riparian zone.
Mae angen caniatâd arnoch gan Natural England neu Cyfoeth Naturiol Cymru (CNC) i gynnal gweithgaredd cyfyngedig ar safle ble mae Gorchymyn Cadwraeth Natur Arbennig mewn grym.