Mostly no, with a stubborn minority that says otherwise. The river and sea maps have almost nothing to say about this village. What risk exists is rain finding the low ground and staying there. Around one postcode in seven flags high on at least one flood measure. This is not a flood village, but it is not a village where the question answers itself either.
Start with rivers and the sea, because that is the map everyone reaches for first. On the Environment Agency's flood zones, about 2% of the area's postcodes sit in zone 2, the medium-probability fringe, and none at all sit in zone 3. Those two zones are separate bands rather than one inside the other, so zone 2 being the larger figure here is exactly what a village with no zone 3 land looks like. For a place seven miles from Yeovil and nowhere near a coast, that is the expected result and it is a genuinely good one.
Surface water is the mechanism those zone maps do not capture, and it is where the actual exposure sits. Rain arriving faster than the ground and the drains can move it does not need a river to ruin a kitchen, and it does not respect the boundary of a flood zone. There is no separate surface-water ranking published for the village on its own, so the honest reading is that the composite postcode indicators below are the ones carrying that risk, not the river maps above.
Looking forward, the climate-adjusted zone share comes out at about 2% of postcodes, the same footprint as the current zone 2 area. The modelling does not push the water meaningfully further into the village under its climate allowance, which is a more useful piece of information than most people expect from that dataset.
For insurance, the practical consequence is that most of Merriott is unremarkable to an underwriter and a small number of addresses will not be. Cover and premiums are set on the individual property, not the village average, so the sensible order is to get an indicative quote before instructing anyone. A refusal or a loaded excess discovered late in a purchase is an expensive way to learn the postcode's history.
On the composite postcode indicators, which fold surface water in alongside rivers and sea, about 15% of the area's postcodes rate high on at least one measure, 6% medium and 34% low. Those bands overlap with the zone figures rather than adding to them, and they describe postcodes rather than houses, which is a blunter unit than a buyer wants.
The property counts are the sharper number. Within the postcodes carrying some risk, the Environment Agency's rivers-and-sea mapping puts 7 properties at high risk, 4 at medium and 6 at low, out of 129 properties in those postcodes, with 5 of the high-risk properties residential. Only postcodes with some risk appear in that count at all, so this is the exposed edge of the village rather than the whole of it. Seven homes is a small number and a specific one, and if one of them is the one you are viewing, the village average is no comfort whatsoever.
On defences, the modelled high-risk extent covers none of the area's postcodes, defended or undefended, with about 2% falling inside a low-risk undefended extent. Where a defence does appear in this kind of modelling it means a structure exists in the model, not that a property behind it is safe.
The nearest tide gauge is at Devonport, where the record from 1962 to 2015 shows sea level rising about 2.35 millimetres a year. That is a measured historic rate at the coast rather than a forecast, and for an inland village with no tidal exposure it is context rather than a threat.
No historic flooding is recorded across the area. That is reassuring as far as it goes, and it goes exactly as far as the records do, which is not the same as proof that water has never come through a door here.
Flood risk in Merriott is middling. The river maps are close to clean, the small group of high-risk properties is real, and the difference between those two facts is decided entirely by which house you buy.