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

Is Scorrier and Wheal Rose at risk of flooding?

For anyone buying or renting in Scorrier and Wheal Rose.

Not from a river, which is not the same as staying dry. Nothing here sits inside a river or sea flood zone. Nothing here has a recorded flood on file. Even so, roughly one in six postcodes carries a high flag on at least one flood measure. The water that troubles this place arrives from above and from the ground, not down a channel, and the zone map is the wrong place to look for it.

Start with the map most buyers check. The Environment Agency's river-and-sea flood zones cover none of this area: zone 3, the higher-probability band, covers 0% of postcodes, and zone 2, the additional medium-probability fringe that sits beyond zone 3 rather than around it, also covers 0%. That is a clean result and worth having. It is also a narrow question, because those zones describe water coming out of watercourses and off the sea, and this is a landlocked stretch of former mining ground several kilometres inland.

Surface water is the measure that matters here, and it is folded into the postcode-level flood indicators rather than published as its own clean share. With the river-and-sea zones sitting at zero, anything flagged at this address level is not arriving from a river. It is rain landing on ground that struggles to take it, running downhill, and pooling where the lanes and the old workings decide it should.

The forward look is equally quiet on the river side. Under the Environment Agency's climate-adjusted zone, which extends the modelled flood extent to account for future sea level and rainfall allowances, 0% of postcodes fall inside. That projection carries the same limitation as the current zones: it is modelling watercourses, not the drainage of a hillside.

For insurance, the practical effect is that a postcode search will look clean, and a specific property search may not. Underwriters price the address, not the village, and a house at the bottom of a dip with surface water history will be treated differently from one on the shoulder of the same lane. Nobody should assume the absence of a flood zone translates into the absence of a loading.

The postcode-level indicators put numbers on that gap. Across the area, about 17% of postcodes rate high on at least one flood measure, 10% rate medium and 20% rate low. Those bands include surface water alongside rivers and sea, so they overlap with the zone figures rather than adding to them, and the high band is the one to take seriously precisely because the river zones are empty. One measure in the composite is doing all of that work on its own.

On defences, the modelled extents record 0% of postcodes in a high-risk extent with a defence present and 0% without one, which follows from there being no modelled high-risk extent here at all. That is not a statement that anything is protected. It means the question of defended or undefended does not arise for river and sea water, and no defence exists or is needed for the surface water that does.

Shoreline management policy still technically applies, since every postcode falls within a plan area, and the stated policy over the twenty, fifty and hundred year horizons is no active intervention. Given the coast sits roughly 3.4 kilometres away at the nearest point and around 4.7 kilometres at the median, that policy is a matter of record rather than a matter of consequence for anyone buying a house here. A policy is in any case a stated intention about maintaining defences, not a defence and not a promise.

On sea level itself, the nearest long-record tide gauge at Devonport measured a rise of about 2.35 millimetres a year across its 1962 to 2015 record. That is history, not forecast, and at this distance from the water it is context rather than a risk to the property.

As for what has actually happened, no historic flooding is recorded across the area. That is genuine reassurance and the strongest single fact on this page. It is also a record of what has been reported and logged, not a guarantee that no lane has ever run like a stream after a summer downpour.

Flood risk comes out as one of the weaker dimensions here, and the reason is worth understanding rather than dismissing. The headline zone maps are empty, the composite indicator is not, and any buyer who checks the first and skips the second has read the reassuring half of the answer.

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) · Coal Authority

Data to December 2025 · Figures checked 20 September 2026 (what this means)