Abertillery Flood Risk

Rivers and the sea Low a 0.1% to 1% chance in any year

Surface water Not mapped No national band is published for this source

Groundwater Not mapped Natural Resources Wales publishes no groundwater likelihood band

Reservoirs Not mapped Reservoir flood maps are not published as a likelihood band in Wales

Abertillery has a Low flood risk from rivers and the sea , with 1.5% of homes in a Medium or High band.

Abertillery has 10,250 residents and 4,721 homes. Ranked 217 of 621 in Wales for rivers and sea flood risk.

What Does Abertillery's Flood Risk Classification Mean?

7.2% of postcodes in Abertillery 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 Low , with 1.5% 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.

Flood Zone versus flood risk band: the full comparison

Which Postcode Districts Cover Abertillery?

Each district below is one postcode district that falls inside Abertillery. 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 districts covering Abertillery, with the flood risk band shared by most of each district's postcodes. A district can span more than one local area, so its band is a summary and not a property-level answer.
Postcode district	Postcodes here	Rivers and sea band	Surface water addresses
NP13	279	Low	not published for this district

What Else Is Near Abertillery?

Flood risk in Wales How this nation classifies flood risk, and its gaps
What each flood risk level means The annual chance behind each band word