Yes, and in Herne Bay the risk is concentrated in particular streets rather than spread across the whole town. More than a quarter of postcodes rate high on at least one flood measure. Where homes face risk from the sea, it's mostly high risk rather than medium. Most of the town lives within a short walk of the water. What the postcode says matters more than what the view promises.
On the Environment Agency's river-and-sea flood zones, about 7% of the area's postcodes sit in flood zone 3, the highest-probability band. A further 3% sit in flood zone 2, the medium-probability fringe beyond zone 3. The two bands don't overlap, so zone 2 being the smaller number is correct and not a typo. These figures cover rivers and the sea only.
Surface water is the other half of the story, and it runs on a different indicator that doesn't appear in those zone figures. The Plenty Brook runs north through the middle of town, much of it through the drainage system with buildings on top, and it has a history of flooding in heavy rain. Eddington, in the south of the town, is where that tends to show up. Separately, about 8% of postcodes fall within areas with a recorded history of flooding.
Looking ahead, about 19% of postcodes fall within the flood zone once the Environment Agency adds its climate change allowance. That's the modelled future footprint, and it's noticeably larger than the present one.
For insurance, a high-risk rating on a specific property can mean higher premiums, a bigger excess, or insurers declining to quote. None of that shows up in the listing photos. Get an indicative quote on the exact address before paying for a survey, not after exchanging.
Across every postcode in the area, counting surface water alongside rivers and sea, about 27% rate high on at least one measure, about 17% medium and about 37% low. These are "at least one measure" bands and they overlap with the zone figures above, so they shouldn't be added to them or read as the same thing.
Counted as properties rather than postcodes, the Environment Agency's rivers-and-sea mapping lists about 2,450 properties in the 91 postcodes carrying some risk. Postcodes with no risk don't appear at all. Of those properties, about 1,100 are rated high risk, 27 medium and 145 low. The profile is lopsided: where Herne Bay has sea risk, it's rarely a medium-risk middle ground.
About 7% of postcodes sit inside the high-risk extent with no defence modelled, and about 7% sit inside it with a defence present in the model. "Defended" means a defence exists in the Environment Agency's model, not that the house behind it stays dry. The most recent of the 53 recorded flood events here, in November 2000, came from the sea overtopping the defences. After the worst flood in the town's history in 1953, groynes, sea walls and a shingle beach went in, and when those were judged inadequate in the 1990s the offshore breakwater known as Neptune's Arm was added. Defences get upgraded after the water has already made its point.
About 60% of postcodes lie within 500 metres of the coast, a threshold in the data rather than a verdict on any single address. The closest postcode is about 22 metres from the shoreline, and the median distance is about 400 metres.
The shoreline management plan for this stretch of coast is to hold the line over 20, 50 and 100 years. That's a stated intention to keep maintaining defences, not a funded guarantee, and certainly not a wall that already exists at full height.
The nearest long-term tide gauge, at Dover, recorded sea level rising by about 2 millimetres a year over its record from 1961 to 2010. That's a measured historic rate, not a forecast.
Flood risk is Herne Bay's weak spot: it's serious where it applies, and it applies to a lot of seafront. Buyers who check the exact address come out fine. Those who rely on the defences to do their homework for them are taking a bigger risk than the sea view suggests.