Piddinghoe, Southease and South Heighton on the River Ouse
Sussex River Ouse at Piddinghoe, South Heighton and Southease, including northernmost properties on The Street, Rodmell
Sussex River Ouse East Sussex
Postcode district
Flood risk in BN10
How exposed the BN10 postcode district (Lewes) is to flooding from rivers, the sea and surface water, from a sample of points checked against the Environment Agency maps.
20%in Flood Zone 2 or 3
20%in Flood Zone 3
20%medium or high river and sea risk
0%some surface water risk
Based on 5 points spread across the district. An indication of the area, not a count of properties.
What the maps show around BN10
Some of the ground in this district is in a flood zone or at risk of surface water flooding, and the difference between streets can be large. We checked 5 points spread across the district: the centre and four points about 900 m away.
20% of the sample points are in Flood Zone 2 or 3 · 0% have some surface water risk
Overall: mixed risk. This describes the district as a whole, not your street.
Flood zone: 1 of 5 points in Zone 3 and 0 in Zone 2.
Flood warning areas near BN10
The Environment Agency issues flood alerts and warnings for these named areas within about six kilometres of the district centre.
Groundwater flooding in Denton
Areas at risk of groundwater flooding in Denton including Denton Road, Vicarage Close, and South Heighton.
Groundwater East Sussex
Newhaven
Newhaven including Avis Way Industrial estate, Newhaven Marina, the A26, A259, West Quay, Riverside North, Denton Island, and the east bank
English Channel East Sussex
Tidal areas of Newhaven
Tidal areas of Newhaven including Newhaven Marina, West Quay, Riverside North, Denton Island, and the East bank
English Channel East Sussex
Seaford seafront
Coastal areas of Seaford seafront including The Esplanade, areas behind and near the Martello Tower, Buckle Caravan and Camping Park and Salts Recreation Ground
English Channel East Sussex
Coastal areas of Seaford seafront
Coastal areas of Seaford seafront including The Esplanade, areas behind and near the Martello Tower, Buckle Caravan and Camping Park and Salts Recreation Ground
English Channel East Sussex
You can sign up for free flood warnings for your own address on GOV.UK.
Check your own BN10 postcode
The figures above describe the district. Your home is one point in it, and that point is what the check reads.
Council area: Lewes District Council.
Will your address flood, and can you get it insured and mortgaged?
Enter an English postcode and see free of charge its flood zone and the risk bands for rivers, the sea and surface water. What the numbers mean, which past floods were recorded around the property, which warning areas cover it and what to ask your insurer, surveyor and solicitor is in the report for that one point.
A flood is the most expensive thing that can happen to a home, and a flood zone or a surface water flow path can change the insurance terms, the mortgage offer and the resale price. The report gathers the Environment Agency data for your address before you commit; it is not a substitute for a flood search from your conveyancer.
- The flood zone and all three risk maps at your point: rivers and sea, surface water, with the annual chance in plain figures and a map of the ground around it
- Every recorded past flood and the flood warning areas that cover the address, with dates, sources and causes where the Environment Agency has them
- What it means for insurance, a mortgage and the building itself: Flood Re, questions for the surveyor and practical flood resilience measures, as a PDF you can share
England only. The short answer is free.
🔒 Card or PayPal via Mollie · download straight after payment, emailed as well · no subscription
Source: Environment Agency under the Open Government Licence · not a substitute for a flood search
Nearby postcode districts
Questions
Frequently asked questions
Is BN10 in a flood zone?
Part of it. Of 5 sample points spread across the BN10 postcode district, 1 (20%) fall in Flood Zone 2 or 3, 1 of them in Flood Zone 3. Flood zones follow rivers and coastlines, so whether your own home is in one depends on the exact spot. Check your full postcode to find out.
Is surface water flooding a risk in BN10?
None of the 5 sample points rate above very low for surface water flooding. Surface water risk is highly local, so check your own postcode.
Which flood warning areas cover BN10?
The Environment Agency issues flood alerts and warnings for named areas. Within about six kilometres of the centre of BN10 these include Piddinghoe, Southease and South Heighton on the River Ouse, Groundwater flooding in Denton and Newhaven. You can sign up for free flood warnings for your address on GOV.UK.
How accurate is a postcode district summary?
It is an indication, not a verdict on any single home. We checked 5 points around the centre of the district against the Environment Agency maps. A district can hold many streets and a flood zone can be a few metres wide. The free check on a full postcode, with a pin you can move onto your plot, is the precise answer.