Wandsworth Flood Risk
Wandsworth has a Very low flood risk from rivers and the sea , with 1.9% of homes in a Medium or High band. The nearest gauge is 2.8 km away.
Wandsworth has 324,769 residents and 157,468 homes. Ranked 1421 of 7,114 in England for rivers and sea flood risk.
What Is The River Level Near Wandsworth Right Now?
Read from the Environment Agency flood-monitoring feed at 20 Sept, 14:34 UTC. The highest level on record here is 3.23 m , reached on 23 September 2024.
Why Are Parts Of Wandsworth In Flood Zone 3 But Rated Low Risk?
25.3% of postcodes in Wandsworth fall in Flood Zone 3, but the flood risk band for rivers and the sea is verylow. The two maps measure different things: the Flood Zone ignores defences, and the band counts them.
When Has Wandsworth Flooded Before?
The Environment Agency holds 1 recorded flood outlines covering Wandsworth, the most recent dated 7 January 1928.
Absence of a record is not evidence that a place has never flooded — the Environment Agency states that a lack of coverage does not mean an area has never flooded.
What Does Wandsworth's Flood Risk Classification Mean?
25.3% of postcodes in Wandsworth sit in Flood Zone 3, the planning band for land with a 1% or greater annual chance of river flooding or 0.5% or greater of sea flooding — and the map that draws it deliberately ignores flood defences.
The flood risk band for rivers and the sea is Very low , with 1.9% of homes in a Medium or High band. Unlike the Flood Zone, the band counts the defences that are actually in place, which is why the two can describe the same street differently and both be right.
Wandsworth is one of the places where they disagree most in England: a large share of its postcodes are in Flood Zone 3, yet few of its homes carry a Medium or High band. The gap is the defences — land the planning map must treat as floodplain, behind a barrier that lowers the present-day chance of flooding.
Which Postcode Districts Cover Wandsworth?
Each district below is one postcode district that falls inside Wandsworth. The band is the one shared by most of that district's postcodes, so it describes the district rather than a single street — enter a full postcode in the checker for one address. A district can cover more than one town, and the district pages linked from the checker are keyed to the town that holds most of its postcodes.
| Postcode district | Postcodes here | Rivers and sea band | Surface water addresses |
|---|---|---|---|
| SW11 | 1,453 | Low | 12,777 |
| SW18 | 1,173 | High | 4,275 |
| SW15 | 1,058 | Low | 6,089 |
| SW17 | 869 | Low | 5,507 |
| SW12 | 416 | High | 2,497 |
| SW19 | 249 | Low | 817 |
| SW8 | 234 | Low | 2,529 |
| SW16 | 179 | High | 844 |
| SW4 | 45 | Low | 157 |
What Else Is Near Wandsworth?
Other places on the River Wandle, nearest to Wandsworth first.