where does the river severn stop being tidal
River Severn The river becomes tidal at Maisemore, on the West Channel just north of Gloucester, and at Llanthony Weir on the East Channel. The tidal river downstream from Gloucester is sometimes referred to as the Severn Estuary, but the river is usually considered to become the Severn Estuary after the Second Severn Crossing near Severn Beach, South Gloucestershire (the point to which the jurisdiction of the Gloucester Harbour Trustees extends), or at Aust, the site of the Severn Bridge.
Stockholm Water Prize 2006: Professor Asit K. Biswas, The Third World Center for Water Management
Matthew 7:7–8 The common English expression "Seek and Ye Shall Find" is derived from this verse.
Sea level In the UK, the Ordnance Datum (the 0 metres height on UK maps) is the mean sea level measured at Newlyn in Cornwall between 1915 and 1921. Prior to 1921, the datum was MSL at the Victoria Dock, Liverpool.