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Analysis and evidence on the 5 shortlisted Severn schemes:
Cardiff-Weston: spanning estuary from Brean Down to Lavernock Point
Shoots Barrage: near Severn road crossings
Beachley Barrage: upstream of Shoots Barrage, and of Wye river
Welsh Grounds Lagoon: impoundment on Welsh shore between Newport and Severn road crossings
Bridgewater Bay Lagoon: impoundment on English shore between Hinkley Point and Weston-super-Mare