Bishop's Cleeve has a moderate flood risk, and most of it comes from rain, not rivers. Almost none of the village is in a river flood zone. About one postcode in eight is flagged high on at least one flood measure. A river last flooded part of it within living memory. The official river maps make it look safer than the full picture does.
The Environment Agency's river-and-sea flood zones barely touch Bishop's Cleeve. About 2% of postcodes are in zone 2, the medium-probability band, and none are in zone 3, the highest. The two zones don't overlap: zone 2 is the outer band beyond zone 3, so a village can have postcodes in zone 2 and none in zone 3. Even so, the agency holds seven recorded flood events here, and about 1% of the area is inside historic flood outlines. The latest was in July 2007, when a main river overflowed a channel that had no raised defences.
The river zones take no account of surface water, the rain that floods streets and gardens before it reaches any river. In a village under a large hill that matters, because the zones only show what the rivers might do. Surface water is counted in the postcode-level indicators further down, and that measure tells a different story.
The Environment Agency's climate-adjusted zone, which models a wetter future, covers about 2% of postcodes. On the river measure, the projected change for the village is small.
Insurers price surface water and river risk together and look at your address, so a house with a clean zone map can still get a higher quote. Flood claims also follow a house. Ask the seller in writing whether the property flooded in July 2007, and whether there has been a claim since. That one answer will tell you more than any of the maps.
The postcode-level indicators add surface water to rivers and sea and flag a postcode if any one of those measures puts it at that level. On that basis, about 13% of postcodes in Bishop's Cleeve are high on at least one measure, 18% medium and 46% low. That gap between the zone map and the indicators is the reason flooding is the village's weakest point.
On the Environment Agency's rivers-and-sea mapping, which lists only postcodes carrying some risk, 12 postcodes here contain 345 properties. Three are at high risk, six at medium and 31 at low, and only one of the high-risk properties is a home. Counted that way, river flooding hits a few dozen properties, mostly at low risk. The wider exposure comes from the rain the rivers never collect.
In the agency's modelled flood extents, well under 1% of postcodes are in a high-risk extent, and the share is the same whether or not defences are included. Here "defended" means only that a defence appears in the model, and in Bishop's Cleeve the model shows defences making no difference to that share.
The nearest stretch of coast covered by a shoreline management plan is about 9.7 kilometres away, and only about 1% of postcodes fall under one. The plan for that coast is to hold the line at 20, 50 and 100 years. That's a stated intention that depends on funding nobody has committed, and it says nothing about what defences stand there today. For a village at the foot of a Cotswold hill, the coast is the least of the water worries.
The nearest tide gauge is at Portsmouth, where sea level rose about 2 millimetres a year between 1962 and 2023. That's the rate measured at Portsmouth, a long way off. Bishop's Cleeve's water comes off the hill, not from the sea.
Flood risk here is middling: the river maps are close to clean, and the surface-water flags are not. It's manageable as long as you know which of those two measures covers the house you're buying.