Flood risk · Horncastle

Flood risk for Horncastle

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

Medium

High

3.1%

Medium

5.4%

Low

8.4%

Very low

1.7%

Surface water flooding

Low

High

2.3%

Medium

1.6%

Low

2.7%

Nearest watercourse

River Waring

A river, 92 m from the centre of Horncastle

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 Horncastle; 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.