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IDENTIFYING THE LONG LIST OF OPTIONS
Initially, a long list of options for the estuary was developed by considering a range of general flood management options that could potentially be applied to any stretch of defence to manage the flood risk in the estuary. These options are: 1. No Active Intervention, 2. Do Minimum, 3. Hold the Line, 4. Advance the Line and 5. Managed Realignment. The General Flood Management Options page discusses each of these options in more detail.

Map 1 below presents how the potential general flood management options have been considered for each stretch of defence in the Blyth estuary.
Click on the defence option or the stretch of defence (the key or the map) to find out more.
Blyth defence options Blythburgh bridge Reydon West Blyford Bridge to Blythburgh Reydon marshes Tinker's marsh Blythburgh

THE LONG LIST OF OPTIONS FOR THE BLYTH ESTUARY
Table 1 shows the long list of options developed for the Blyth Estuary.

General Flood Management Options
No Active Intervention Options No Active Intervention throughout the Estuary
Hold the Line Options Hold the Line throughout the Estuary
Advance the Line Options Barrier at either: Blythburgh Bridge, Bailey Bridge, or the Harbour Mouth
Barrage at either: Blythburgh Bridge, Bailey Bridge, or the Harbour Mouth
Advance the Line by Narrowing the Estuary at the Bailey Bridge
Advance the Line by Making the Estuary shallower at the Bailey Bridge
Managed Realignment Managed Realignment throughout the Estuary
Various Combinations of General Flood Management Options
No Active Intervention/Managed Realignment + Hold the Line Combination Options Hold the Line throughout the Estuary + New Channel through Bulcamp Mudflats
No Active Intervention/Managed Realignment Upstream of the Harbour Mouth + Hold the Line of the Harbour Mouth
No Active Intervention/Managed Realignment at Robinson Marshes + Hold the Line elsewhere
No Active Intervention/Managed Realignment at Town Marsh + Hold the Line elsewhere
No Active Intervention/Managed Realignment at Tinkers Marshes + Hold the Line elsewhere
No Active Intervention/Managed Realignment at Tinkers Marshes + Excavation of a channel through Tinkers Marshes + Hold the Line elsewhere
No Active Intervention/Managed Realignment at Reydon Marshes + Hold the Line elsewhere
Widening (narrow/ medium/ large) of the Harbour entrance only + Hold the Line elsewhere
No Active Intervention/Managed Realignment at Robinson Marshes + widening (narrow/ medium/ large) of the Harbour entrance + Hold the Line elsewhere
No Active Intervention/Managed Realignment at Town Marsh + Widening (narrow/ medium/ large) of the Harbour entrance + Hold the Line elsewhere
Advance the Line + Hold the Line Combination Options Advance the Line by Narrowing the Estuary at the Bailey Bridge + Hold the Line elsewhere
Advance the Line by Making the Estuary shallower at the Bailey Bridge + Hold the Line elsewhere
Advance the Line + No Active Intervention/Managed Realignment + Hold the Line Combination Options Advance the Line by Narrowing the Estuary at the Bailey Bridge + No
Active Intervention/Managed Realignment at Tinkers Marshes + Hold the Line elsewhere
Advance the Line by Making the Estuary shallower at the Bailey Bridge + No Active Intervention/Managed Realignment at Tinkers Marshes + Hold the Line elsewhere