FloodRadar
Log inCreate free account
FloodRadar
Log inCreate free account
White Grit, Powys - Powys
Up to High likelihood
Properties in SY5 0JL sit in the Environment Agency's High flood-likelihood band (worst property). The band is the worst found in the postcode — it describes the land around properties (defence-adjusted, rivers & sea), not any single address, and not today's conditions.
| Likelihood band | Annual chance | Properties | Of which homes |
|---|---|---|---|
| High | greater than 3.3% | 1 | 0 |
| Medium | 1% – 3.3% | 0 | 0 |
| Low | 0.1% – 1% | 0 | 0 |
| Very low | below 0.1% | 0 | 0 |
Over a 25-year mortgage, a property in a high-likelihood area has at least a 57% chance of flooding at least once.
SY5 0JL gets about 937 mm of rain a year on average (wettest month October, 100 mm; driest February, 66 mm). That is 19% drier than the UK as a whole, which averages 1,163 mm a year.
A thirty-year average for the surrounding area, not a measurement at this address and not a flood risk on its own: a dry area floods when a storm sits over it, and a wet one may drain away perfectly well. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 0.9 km away. Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0.
The ground here sits at about 298 m above sea level and falls 66 m across the surrounding 800 m. Surface water reaching this point runs off ground lying to the west-south-west, 5.7 m higher.
The nearest watercourse on the river map is the River West Onny, about 300 m from the centre of SY5 0JL. It flows into the River Onny about 13 km downstream.
A gauge downstream shows water that has already passed this point; one upstream sees it first. Distances along the river are from the point on the River West Onny nearest the centre of SY5 0JL. 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.
Because properties in the high likelihood band.
The map above shows the real EA rivers & sea likelihood cells around SY5 0JL. The small panels are illustrative previews of the report's per-layer map views — the full report draws each layer for real, plus recorded extents, defences and a building picker on an interactive map.
The Environment Agency's warning record covers England only, so it holds nothing for this location — that is the reach of the record, not a quiet place. Natural Resources Wales's record — the one that does cover this location, back to February 2006 — was searched and holds no warning it can place within 10 km. That is not a confirmed none: older NRW alert areas have no published boundary, so roughly one warning in nine in that record cannot be placed anywhere, and NRW's published archive currently stops several weeks short of today.
Warnings cover flood areas, not individual addresses, and are issued when flooding is expected rather than when it happens.
The Environment Agency's Recorded Flood Outlines cover England only, so there is no mapped flood record here to be empty — this is an absence of coverage, not an absence of floods. Recorded flooding here is mapped by Natural Resources Wales.
| Gauge | River | Distance | Typical high | Highest on record |
|---|---|---|---|---|
| Pont-Y-Gaer River Station | Camlad | 10.4 km | 2.01 m | — |
| Munlyn River Station | Severn | 11.1 km | 2.69 m | — |
| Farley Bridge | Rea Brook | 12.5 km | 1.20 m | 2.51 m |
| Buttington River Station | Severn | 13.3 km | 4.38 m | — |
Live levels, predictions and rain-response behaviour are on each gauge's page and in the property report.
The Environment Agency's register of mapped flood-defence assets covers England only, so it holds nothing here — that is the reach of the register, not an absence of defences. Defences here are held by Natural Resources Wales. Defences reduce risk, never remove it.
The interactive flood-risk map with a building picker (your exact house, not the postcode), the 2050s climate view, surface-water and planning flood zones at your building, exact recorded-flood distances, year-by-year warning charts, watercourses including culverted streams, an insurance outlook with the Flood Re rules, and a printable document with every dataset receipt — start with the free preview, unlock for £19.
Flooded here before? Log it and see what your floods had in common.
At-risk postcodes near SY5 0JL — all in the SY5 district.
© Environment Agency copyright and/or database right 2025. All rights reserved. Some features of this map are based on digital spatial data from the Centre for Ecology & Hydrology, © NERC (CEH). © Crown Copyright and Database Rights 2025 OS AC0000807064. This product is produced in part from PAF® and Multiple Residence Data, the copyright in which is owned by Royal Mail Group Limited and/or Royal Mail Group plc. All rights reserved. Licence number AC0000807064. Place names: Contains OS data © Crown copyright and database rights 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Contains National Statistics data © Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0. Recorded Flood Outlines and warning history © Environment Agency copyright and/or database right 2025. Storm-overflow figures: EA Event Duration Monitoring (England); live overflow status © the water companies, incl. Dŵr Cymru Welsh Water and Scottish Water. Flood defences © Environment Agency (OGL v3). This page summarises public area-level data — it is not a flood-risk survey and not a substitute for the official GOV.UK service. All data sources & licences. More postcodes: the SY5 district.