Flood risk · Farnham

Flood risk for Farnham

Indicative risk for the kilometre square around the centre, from the Environment Agency’s national flood risk assessment. Always check a specific property address on the official map before buying or building.

River & sea flooding

High

7.1%

Medium

3.2%

Low

8.1%

Very low

Surface water flooding

Low

High

2.8%

Medium

Low

2.6%

Nearest watercourse

River Wey (North Branch)

A river, 300 m from the centre of Farnham

For a property-specific flood risk check, use the official Environment Agency service at check-long-term-flood-risk.service.gov.uk.

Environment Agency National Flood Risk Assessment (NaFRA2, January 2025): the level shown is the highest risk that applies to at least 5% of the 1 km square centred on Farnham; bars show each level’s share of that square. Nearest named watercourse from OS Open Rivers. Contains Environment Agency and Ordnance Survey data, Open Government Licence.