Lanark Flood Risk
Lanark has no mapped rivers-and-sea flood risk: neither the national risk assessment nor the planning Flood Zone map covers it. That is not a statement that Lanark cannot flood — this figure covers rivers and the sea only, and surface water flooding is not included. The nearest gauge is 3.5 km away.
Lanark has 8,943 residents and 4,270 homes. Ranked equal 360 of 656 — the places where the national risk assessment maps no rivers-and-sea exposure for any home, so the position is a tie rather than a low score.
What Does Lanark's Flood Risk Classification Mean?
The flood risk band for rivers and the sea is not mapped here, which means the national assessment finds no rivers-and-sea exposure for Lanark's homes rather than a low amount of it. That is a statement about rivers and the sea only: surface water flooding is not included, and it is the larger source nationally.
Flood Zone versus flood risk band: the full comparison · What the Flood Zones mean
Which Postcode Districts Cover Lanark?
Each district below is one postcode district that falls inside Lanark. 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 |
|---|---|---|---|
| ML11 | 276 | Not mapped — no rivers-and-sea band covers this district | not published for this district |
"Not mapped" is not "no risk". It means no rivers-and-sea band covers that district in the source — surface water can still flood it, and both Camden and Islington flooded from surface water in July 2021 while carrying no mapped rivers-and-sea band.