The reason there is a canal called the Gloucester & Sharpness Canal is because the Severn is severely silted for this length and unnavigable.
If we build a barrier then the tidal flow will be impounded and the silt it carries in will settle out. How long before there is insufficient water impounded to generate electricity?
Do we then spend a fortune on dredging and carting the resultant material away? The promoters of this ill thought scheme should do their homework and not look to the short term construction bonanza to make their money and leave us with a white elephant.
ALAN J WHITE (M), email@example.com