Winscombe is mostly clear of flooding, with the one real question hiding in the drains rather than the rivers. The river and coastal flood zones barely touch the village. There is no flooding on the historic record for the area. The catch is surface water, where about one in ten postcodes carries a high risk. Rivers, no. Rain with nowhere to go, sometimes.
Start with the rivers and the sea, because that is what most people picture when they ask the question. The medium-risk river-and-coastal zone covers under one percent of the area, and the higher-risk zone about the same again. Sitting on the western edge of the Mendip Hills, up off the low ground, does most of that work for the village. Nothing in the historic flood record marks the area as having been under water, which is the kind of clean sheet plenty of Somerset settlements closer to the levels cannot claim.
The risk that does exist is rainfall with nowhere to drain. About one in ten postcodes carries a high surface-water risk, roughly one in eight some medium risk, and about a quarter at least a low level of it. This is the flash sort, a heavy downpour overwhelming the drains and running downhill off the slopes, and it clusters in pockets rather than blanketing the whole village. Two homes on the same road can sit very differently. The village-wide figure flatters the good spots and hides the bad ones, which is exactly why an average is the wrong tool for this question.
Look forward and the picture holds steady. With a climate allowance added to account for wetter decades ahead, the higher-risk river-and-coastal zone still covers under one percent of the area. The rivers are not the threat now, and the projections do not turn them into one. If anything sharpens over time it is the surface-water side, because more intense rainfall presses hardest on the same drainage the low-lying pockets already struggle with. The threat that matters is the one that gets worse with a warming climate, not the one the flood maps colour in.
For insurance, most homes here should see ordinary cover on ordinary terms, since the river and sea exposure is close to nil. Where a property falls inside one of the surface-water pockets, an insurer may ask more questions, load the premium, or want to know what drainage has been done. The sensible move is to get the exact address checked before you commit, rather than trusting the comforting headline, because risk in Winscombe is a postcode-by-postcode business and not a single number stamped across the village.
The verdict lands in the middle, an average three out of five for flood risk. The rivers leave Winscombe alone and the historic record is clean, but the surface-water pockets are real enough that a blanket all-clear would be dishonest. Check the specific street with the surface-water map open, and treat the reassuring average as the start of the question rather than the answer.