<Table> <Tr> <Td_colspan="2"> River Severn </Td> </Tr> <Tr> <Td_colspan="2"> Welsh: Afon Hafren, Latin: Sabrina </Td> </Tr> <Tr> <Td_colspan="2"> River </Td> </Tr> <Tr> <Td_colspan="2"> The Severn at Shrewsbury from Shrewsbury Castle . </Td> </Tr> <Tr> <Th> Countries </Th> <Td> United Kingdom, (Wales, England) </Td> </Tr> <Tr> <Th> Regions </Th> <Td> Mid Wales, West Midlands, South West </Td> </Tr> <Tr> <Th> Counties </Th> <Td> Powys, Shropshire, Worcestershire, Gloucestershire </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> Tributaries </Td> </Tr> <Tr> <Td> - left </Td> <Td> Vyrnwy, Tern, Stour, Warwickshire Avon, Bristol Avon </Td> </Tr> <Tr> <Td> - right </Td> <Td> Teme, Leadon, Wye </Td> </Tr> <Tr> <Th> Cities </Th> <Td> Shrewsbury, Worcester, Gloucester, Bristol </Td> </Tr> <Tr> <Th> Landmarks </Th> <Td> Ironbridge Gorge, Severn Valley, Severn bore, Severn crossing </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Source </Th> <Td> </Td> </Tr> <Tr> <Td> - location </Td> <Td> Plynlimon, Ceredigion, Wales </Td> </Tr> <Tr> <Td> - elevation </Td> <Td> 610 m (2,001 ft) </Td> </Tr> <Tr> <Td> - coordinates </Td> <Td> 52 ° 29 ′ 36" N 3 ° 44 ′ 04" W ﻿ / ﻿ 52.493465 ° N 3.734578 ° W ﻿ / 52.493465; - 3.734578 </Td> </Tr> <Tr> <Th> Mouth </Th> <Td> Severn Estuary </Td> </Tr> <Tr> <Td> - location </Td> <Td> Bristol Channel, United Kingdom </Td> </Tr> <Tr> <Td> - elevation </Td> <Td> 0 m (0 ft) </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Th> Length </Th> <Td> 354 km (220 mi) </Td> </Tr> <Tr> <Th> Basin </Th> <Td> 11,420 km (4,409 sq mi) </Td> </Tr> <Tr> <Th> Discharge </Th> <Td> for Bewdley, Worcs . SO 7815 7622 </Td> </Tr> <Tr> <Td> - average </Td> <Td> 61.17 m / s (2,160 cu ft / s) </Td> </Tr> <Tr> <Td> - max </Td> <Td> 533.48 m / s (18,840 cu ft / s) max recorded on 1947 - 03 - 21 </Td> </Tr> <Tr> <Td_colspan="2"> Discharge elsewhere (average) </Td> </Tr> <Tr> <Td> - Apperley, Glos . </Td> <Td> 107 m / s (3,779 cu ft / s) </Td> </Tr> <Tr> <Td> - Montford, Shrops . </Td> <Td> 43.46 m / s (1,535 cu ft / s) </Td> </Tr> <Tr> <Td_colspan="2"> </Td> </Tr> <Tr> <Td_colspan="2"> Tributaries (light blue) and major settlements on and near the Severn (bold blue) </Td> </Tr> </Table> <Tr> <Td_colspan="2"> River Severn </Td> </Tr>

Where exactly is the source of the river severn