Flood Risk In East Sussex

1.8% of homes in East Sussex are in a Medium or High flood risk band, across 266,378 dwellings. It ranks 11 of 21 English counties.

Rivers and the sea Very low less than a 0.1% chance in any year

Surface water 24,631 addresses at risk that rivers and sea does not explain — a minimum, not a total

Groundwater Not mapped 70 postcodes here are in a groundwater alert area; no likelihood band is published

Reservoirs Not mapped No national band is published for this source

The county band is the aggregate of its 5 districts: 3,028 homes at High, 1,891 at Medium, 4,213 at Low and 15,514 at Very Low — summing to the 24,646 homes at risk this page opens with.

Towns In East Sussex, Ranked By Flood Risk

1 Newhaven Medium 10.1% of homes at Medium or High
2 Lewes Low 2.5% of homes at Medium or High
3 Hastings High 2.5% of homes at Medium or High
4 Bexhill-on-Sea High 2.4% of homes at Medium or High
5 Seaford Low 2.1% of homes at Medium or High
6 Lower Willingdon Low 0.9% of homes at Medium or High
7 Polegate Low 0.7% of homes at Medium or High
8 Eastbourne Very low 0.4% of homes at Medium or High
9 Uckfield Low 0.2% of homes at Medium or High
10 Hailsham Low 0.1% of homes at Medium or High
11 Crowborough Not mapped 0% of homes at Medium or High
12 Heathfield (Wealden) Not mapped 0% of homes at Medium or High
13 Peacehaven Not mapped 0% of homes at Medium or High

Ranked within England only. Each town's figure counts its own homes, so the shares are comparable with each other but not with towns in Scotland, Wales or Northern Ireland.

Which Rivers Run Through East Sussex?

Rivers with a gauged station in one of the towns ranked above. Each river page carries every gauge on it and the live level at each.

River Ouse levels 9 gauging stations on this river
River Uck levels 3 gauging stations on this river
Winterbourne Stream levels 1 gauging station on this river

How Does East Sussex Compare With Other English Counties?

East Sussex ranks 11 of 21 English counties for the share of homes in a Medium or High flood risk band. That is level with the median county. The comparison covers the 21 shire counties only — the 132 unitary authorities, including Bristol, York and Sheffield, have no county above them and so take no rank here.

A county figure is an aggregate of its districts, and districts differ sharply: a fenland district and an upland one in the same county can sit at opposite ends of the national ranking. Compare the towns above rather than the county total where it matters.

Share of homes in a Medium or High band, from the Environment Agency's national assessment. The method · The national picture