Protecting a floodplain town
Fictional decision exercise. A fictional council has £8 million for flood management. Estimates use the same 30-year planning period. The options are alternatives; do not add their benefits together.
| Option | Capital cost (£ million) | Homes with reduced flood damage (Estimated count) |
|---|---|---|
| Walls | 7.5 | 220 |
| Wetlands | 4.2 | 140 |
| Adapt homes | 3.1 | 95 |
Options
Walls
7.5
Protects the central business district
may increase downstream flow
Construction disruption
residual overtopping risk
Wetlands
4.2
Creates habitat and stores water upstream
Requires agreements with farmers
takes time to establish
Adapt homes
3.1
Targets the most exposed homes
reduces damage
Does not prevent flooding or protect all roads
Stakeholder evidence
Central business group: Reliable road access protects jobs.
Downstream residents: Our flood risk must not increase.
Farmer: Storage land requires fair payment.
Use the resource
Read possible decision reasoning
A strong response can favour any listed option when its priorities and evidence are consistent. Compare costs with the available budget, use the homes with reduced flood damage measure accurately, and discuss at least one limitation. Explain why an alternative is less suitable for the stated priority. Estimates do not guarantee outcomes; identify further information needed before a real decision.