BeforeIBuyHonest. Maybe too honest.
№ 04 / 09 · Flood risk

Is Worplesdon at risk of flooding?

For anyone buying or renting in Worplesdon.

Mostly no, but the risk isn't zero everywhere. None of the parish's postcodes fall in the main river or sea flood zones. There's no recorded history of flooding. A small minority of postcodes still rate high on at least one flood measure. The risk depends on the address, not on the village as a whole.

Start with rivers and the sea. On the Environment Agency's flood-zone mapping, 0% of Worplesdon's postcodes are in Flood Zone 3, the highest-probability band, and 0% are in Flood Zone 2, the medium-probability band just beyond it. The two zones don't overlap, and both are empty here. The listing that says "not in a flood zone" is telling the truth. It just isn't telling you everything.

This page has no separate surface-water share. Surface water, the rain that has nowhere to drain, is counted in the postcode-level picture below alongside rivers and sea. It's the kind of flooding a zone map can miss, which is why it needs its own check on any specific house.

Looking ahead, the Environment Agency's climate-adjusted flood zone covers 0% of the parish's postcodes too. On that projection, the river and sea picture stays empty.

For insurance, homes outside the river and sea zones are generally the easier ones to cover. A property sitting on a local high-risk flag can still be quoted differently from the house next door. Get an insurance quote on the exact address before you instruct a solicitor, not after the survey has used up your patience and your deposit.

The postcode indicators give a wider view. About 7% of Worplesdon's postcodes rate high on at least one flood measure, about 2% rate medium and about 10% rate low, with surface water included. Those bands measure something different from the flood zones above. They can't be added to the zone figures, and a postcode that shows up here isn't secretly in Flood Zone 3.

Counting properties is more useful. The Environment Agency's property-level mapping of river and sea risk only lists postcodes that carry some risk, and across those postcodes it counts 158 properties. Of those, 13 are rated high risk, two medium and two low, and four of the high-risk properties are homes. That model estimates the chance of flooding at each property, so it can pick out individual addresses even where the broad zone map is blank. The numbers are small, but if you're buying one of the 13, they're the only numbers that matter.

On defences, 0% of Worplesdon's 43 postcodes fall inside the high-risk flood extent, with or without defences modelled. Nothing in the modelling suggests a defence is holding back a known flood. Equally, no defence is modelled, which means no defence is being counted on. Neither fact says an individual house is safe.

The nearest tide gauge, at Portsmouth, recorded sea level rising at about 2 millimetres a year over its record from 1962 to 2023. That's a measured historical rate, not a forecast, and Worplesdon is well inland of it. It belongs in the file, not in your worries.

There's no recorded flooding in the area: 0% of the parish's postcodes fall in the historic flood outlines. That's reassuring. It isn't proof nothing has ever flooded, only that nothing was recorded in the official outlines.

Flood risk in Worplesdon is middling rather than alarming. Rivers and the sea leave most of the parish alone, but a small number of properties carry a real flag, so check the specific address.

Check it for your address. Flood risk can change from one street to the next, so look up the exact address on the government's long term flood risk service.

Sources: Environment Agency · Environment Agency tide gauges (via PSMSL)

Data to May 2026 · Figures checked 28 September 2026 (what this means)