Yes, and it isn't confined to the edges. About a third of Rye sits in the highest-probability river-and-sea flood zone. With a climate allowance built in, that rises to six in ten. Most of the high-risk ground has no modelled defence in front of it. In Rye, flood risk is the normal state of most of the town, not the exception.
The Environment Agency's river-and-sea mapping puts about 32% of Rye's postcodes in Flood Zone 3, the highest-probability band, and about 3% in Flood Zone 2. The two zones don't overlap. Zone 2 is the medium-probability fringe beyond Zone 3, which is why it's the smaller number here: most of Rye's at-risk land is in the top band, not the fringe.
Surface water doesn't have its own separate figure here. It's folded into the postcode-level measure further down, so it can't be picked out on its own.
Looking ahead, the Environment Agency's climate-adjusted flood zone covers about 60% of Rye's postcodes. That's a modelled allowance for a wetter future, not a forecast of a particular flood. Even so, it moves a majority of the town onto the map, and that's the map lenders and insurers will be using over the life of a mortgage.
Insurance is where this reaches your bank balance. A home in the higher-risk zones can expect questions at quote stage, higher premiums or excesses, and occasionally an insurer that won't quote at all. Get an indicative quote on the exact address before you instruct a solicitor. The listing won't bring it up, so ask.
On a broader postcode measure that counts a postcode if it's flagged on at least one flood indicator, surface water included, about 11% of Rye's postcodes rate high risk, about 25% medium and about 30% low. This is a different measure from the flood zones above. The bands overlap with the zone figures and can't be added to them.
Counting buildings rather than postcodes, the Environment Agency's rivers-and-sea risk data lists 3,294 properties across the postcodes that carry any risk. Of those, 273 are at high risk, 377 at medium, 492 at low and 1,599 at very low. Of the high-risk properties, 184 are homes. Postcodes with no river or sea risk aren't in the list at all, so this is a count of the exposed part of Rye, not the whole town.
Then there's the question of defences. About 31% of Rye's postcodes fall inside the high-probability flood extent with no defence present in the model, against about 5% where one is modelled. A defence in the model means a structure is there in the calculations. It doesn't make the house behind it safe, and a buyer who hears "defended" as "dry" has made the kind of mistake surveyors see all the time.
The shoreline management plan's policy for this stretch is to hold the line for the next twenty and fifty years, then move to managed realignment over a hundred years, which means planning for the shoreline to be allowed to shift. A policy is a stated intention to keep maintaining defences if funding and priorities allow. It isn't a guarantee, and it isn't a wall that already exists.
The nearest tide gauge, at Dover, recorded sea level rising at about 2.2 millimetres a year over its 1961 to 2010 record. That's a measured past rate, not a prediction. It's also the direction that matters most for a town built where three rivers meet the marsh.
The recorded-flood outlines for the area contain nothing, and that's reassuring as far as it goes. Missing records don't prove the water has never come in, though. Rye's own history includes the sea and river combining around 1375 to destroy the eastern part of the town, well before anyone was keeping flood outlines.
Flood risk is Rye's weakest point by a distance: a third of the town in the top zone now, most of it undefended in the model, and more to come under a climate allowance. Any purchase here starts with the exact address and the flood search, before you think about the view.