From rivers and the sea, no, and from heavy rain, sometimes. No postcode here falls in a river or sea flood zone. No flooding is on record. About one postcode in eight still rates high on at least one flood measure. Belmont's flood risk lives in the drains and the dips in the road, and it varies from one street to the next.
The Environment Agency's river-and-sea flood mapping puts none of Belmont's postcodes in flood zone 3, the high-probability band, and none in flood zone 2, the medium-probability fringe beyond it. Both shares are 0%. Whatever water troubles Belmont, it does not arrive from a river or the sea.
That leaves surface water, the flooding that happens when a downpour arrives faster than the ground and the drains can take it away. With no river or coastal zone anywhere in the area, the risk that shows up on Belmont's postcode measures comes from rainfall and the routes it takes across hard surfaces. The nearest water body of any kind is about 1,100 metres from the average postcode, which is a long way for a flood to travel and no distance at all for a thunderstorm.
The Environment Agency's climate-adjusted flood zone, which redraws the river-and-sea map for the rainfall and sea levels expected later this century, also covers 0% of Belmont's postcodes. On the agency's own forward look, rivers and the sea stay out of the picture.
For insurance, that clean river-and-sea record helps, and insurers look at surface water separately, address by address. A home in one of Belmont's higher-rated pockets can be quoted very differently from one a few streets away, so the postcode on the policy matters more than the name of the area. Put the exact address into the Environment Agency's long-term flood risk service and read the surface-water result, then get an indicative insurance quote while the purchase is still at an early stage.
Across Belmont's postcodes, about 13% rate high on at least one flood measure, about 16% rate medium and about 30% rate low, and these measures fold surface water in alongside rivers and the sea. A postcode counts once in whichever band its worst measure puts it, so these shares overlap with each other and cannot be added to the zone figures above. Here, with the zones empty, the high ratings come from the rain.
The Environment Agency's modelled flood extents put 0% of Belmont's postcodes in a high-risk extent, whether defended or undefended, and 0% in the low-risk undefended extent either. No defences protect Belmont because the model found no river or sea flooding to defend it from. That is not the same as being safe from a summer storm.
The nearest tide gauge is at Portsmouth, where the sea level rose by about 2 millimetres a year across its record from 1962 to 2023. That is the rate measured at Portsmouth over those years. When the nearest tide gauge to a place is in Portsmouth, the sea is not a large part of that place's flood planning.
The Environment Agency has no recorded flood outlines covering any part of Belmont. That is real reassurance, though a flood record only covers floods that someone wrote down, and small surface-water events in a single road rarely make the official outline.
Belmont sits in the middle of the range for flood risk. Rivers and the sea are no threat, and a minority of postcodes face a real surface-water risk that needs checking address by address.