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NRW has no flood warnings or alerts in force in Wales. Last successful check: 2026-11-04 07:48:02 UTC.
No current NRW warning or alert matched the location of Llanerfyl River Station. That does not establish warning coverage for the whole town: only these gauge points were checked.
Read Wales’s warnings · Check your area on Natural Resources Wales
Messages: Natural Resources Wales flood warnings API. Warning-area boundaries: Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Reused under the Open Government Licence v3.0. Boundaries from DataMapWales.
No official flood warning is active nearby and the closest river stations are within normal ranges.
Updated 2026-11-04 07:50:02 UTC · Official GOV.UK warnings · Flood preparation & help guide
Llanerfyl is a village and community in Montgomeryshire, Powys, Wales. Located near the River Banwy, the community includes the village of Llanerfyl, several farms and wide tracts of marchland. The southern part of the community includes Cwm Nant yr Eira, which suffered severe depopulation in the 20th century. The 2001 census gives the population of the community as 402, increasing slightly to 406 at the 2011 Census.
Flood Zones, Warning Areas and Surface Water are Environment Agency maps and cover England only. Llanerfyl is in Wales, so they draw little or nothing here — that is where the map ends, not an absence of flood risk. Natural Resources Wales’s warning areas have their own pages under flood areas.
Two mapped watercourses are about the same distance from the middle of Llanerfyl's gauges: Afon Einion (Afon Banwy) (about 80 m) and Nant Menial (about 100 m), so this page cannot say which one is nearer to you.
Distances along the river are from the point on each watercourse nearest the middle of Llanerfyl's gauges. From Ordnance Survey’s river map (OS Open Rivers), which leaves out small streams, ditches and culverts, so a nearer one may exist. This describes where water goes on the map; it says nothing about flooding at any address. Contains OS data © Crown copyright and database rights 2026.
Llanerfyl is monitored by 1 Natural Resources Wales river level station on the Banwy, in Powys. Water levels are updated every 15 minutes, providing real-time flood monitoring for the area.
The Banwy is monitored by 1 station (Llanerfyl River Station). Each station records water levels continuously, with data synced to FloodRadar every 5 minutes.
No Environment Agency flood warning area is mapped within 10km of Llanerfyl. That means the EA has not defined a warning target area here, which is not evidence the town cannot flood: warning areas exist where the EA runs a warning service, and surface-water and groundwater flooding have no warning areas at all. The EA’s register covers England only — Llanerfyl is in Wales, where the warning service is Natural Resources Wales’s, and FloodRadar publishes its areas alongside the EA’s on the flood areas index.
If flooding is forecast in Llanerfyl, call Floodline on 0345 988 1188 for the latest information. Move valuables upstairs, turn off gas and electricity if safe to do so, and avoid walking or driving through flood water. Sign up for flood warnings on any station page above to receive email alerts when water levels rise. For emergency numbers, a preparation checklist and insurance guidance, see our flood help & preparation guide.
Llanerfyl gets about 1,438 mm of rain a year on average (wettest month December, 181 mm; driest May, 83 mm). That is 24% wetter than the UK as a whole, which averages 1,163 mm a year. See the rain gauges →
A thirty-year average for the area, not a forecast and not a flood risk on its own. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 2.3 km away. Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0.
No recorded flood outline within ~5 km of the Llanerfyl town centre means no flood was mapped here, which is not evidence none happened: the Environment Agency mapped only some floods, mapping effort rose sharply after about 2000, and surface-water flooding is largely absent from this record. The Environment Agency's Recorded Flood Outlines cover England only, and Llanerfyl is in Wales — so an empty record here is an absence of coverage, not an absence of floods. Open the recorded-floods map →
Current verdict: Normal. No official flood warning is active nearby and the closest river stations are within normal ranges.
Llanerfyl has river level monitoring on Banwy — 1 monitoring station in total.
Use Natural Resources Wales flood warnings (flood-warning.naturalresources.wales) or call Floodline on 0345 988 1188 (24 hours). You can also set up free FloodRadar email or browser alerts from any station page above.
Follow official advice: move valuables and vehicles to safety, never walk or drive through flood water, turn off gas and electricity if safe, and check on vulnerable neighbours. See our flood preparation guide at floodradar.co.uk/flood-help.
No recorded flood outline is mapped around the Llanerfyl town centre means no flood was mapped here, which is not evidence none happened: the Environment Agency mapped only some floods, mapping effort rose sharply after about 2000, and surface-water flooding is largely absent from this record. The Environment Agency's Recorded Flood Outlines cover England only, and Llanerfyl is in Wales — so an empty record here is an absence of coverage, not an absence of floods. FloodRadar holds at least 10 Natural Resources Wales flood warnings or alerts recorded within 15 km of Llanerfyl, the most recent on 24 October 2026. See the flood history link below.
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