Does BB4 5BU flood?

Up to Low likelihood

Properties in BB4 5BU sit in the Environment Agency's Low 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%	0	0
Medium	1% – 3.3%	0	0
Low	0.1% – 1%	7	7
Very low	below 0.1%	0	0

Over a 25-year mortgage, a property in a low-likelihood area has a 2–22% chance of flooding at least once.

The ground around BB4 5BU

The ground here sits at about 221 m above sea level and falls 97 m across the surrounding 800 m. Surface water reaching this point runs off ground lying to the north-east, 4.2 m higher.

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Get the full flood report for BB4 5BU — £19 Free preview first · instant access · no account needed The detail below — flood history, warnings, rivers, overflows — is part of FloodRadar's property flood-risk report. The official band above is free; the preview shows more before you decide.

Inside the full report for BB4 5BU

FloodRadarProperty Flood-Risk Report

BB4 5BU

Moderate flood risk — investigate further

Because properties in the low likelihood band; 104 official warnings since 2006.

C Today — indicative grade (A best → E)

··· By the 2050s — EA climate scenario (in the full report)

⚑ Official warning within 10 km: Yes ⚑ Recorded flood nearby: No ⚑ Flood defences within 500 m: Yes ⚑ In flood zone 2 or 3: ···

Rivers & sea

Up to Low

Surface water

···

Groundwater

Not assessed

Historic flooding

None within ~1 km

Warning history · flood map with building picker · 2050s view · insurance outlook · every dataset receipt — 18 sections

Flood-risk map of this area

Environment Agency flood-likelihood cells

High (>3.3%/yr) Medium Low Very low Marker = postcode centre Base map © OpenStreetMap contributors

Rivers & sea likelihood · illustrative

Surface water (flash flooding) · illustrative

Flood Zones 2 & 3 (planning) · illustrative

2050s projection (climate) · illustrative

The map above shows the real EA rivers & sea likelihood cells around BB4 5BU. 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.

Official flood warnings near BB4 5BU

104

flood alerts & warnings within 10 km since 2012

103

of them full flood warnings or severe warnings

2025

most recent warning nearby (2025-09-20)

Warnings cover flood areas, not individual addresses.

Named storms that brought flooding here

Ciara (2020, 15 warnings nearby) · Bert (2024, 11 warnings nearby) · Brian (2017, 11 warnings nearby) · Darragh (2024, 7 warnings nearby)

The rivers that matter for BB4 5BU

Gauge	River	Distance	Typical high	Highest on record
Rawtenstall	Limey Water	2.8 km	1.70 m	1.62 m
Little Bridge	Ogden Brook	3.4 km	2.10 m	1.74 m
Irwell Vale	River Irwell	4.2 km	1.60 m	3.43 m
Holt Mill Bridge	River Irwell	5.1 km	1.20 m	1.86 m

Live levels, predictions and rain-response behaviour are on each gauge's page and in the property report.

Storm overflows within 5 km

Overflow	Discharges into	Distance	Spills	Hours
Carr Mill Street Cso	Clvrt'd Section Swinnel Brook	0.1 km	34 (2024)	178
Manchester Road Sewer	Swinnel Brook	1.2 km	20 (2024)	12
Deardengate/bury Road Cso	Swinnel Brook	1.2 km	2 (2024)	0
Langwood Brook Cso	Clvrt'd Section Langwood Brook	1.6 km	10 (2024)	12

Official annual EDM figures — a water-quality signal for local watercourses, not a property flood-risk factor.

Flood defences

9 mapped flood-defence assets within 500 m — nearest ~95 m (natural high ground, wall). Defences reduce risk, never remove it.

What the full property report adds

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.

Flood risk at nearby postcodes

BB4 5AN up to Low BB4 5AT up to High BB4 5AX up to High BB4 5AY up to High BB4 5BA up to High BB4 5BT up to Low BB4 5DD up to Medium BB4 5EJ up to High BB4 5EN up to Low BB4 5ES up to High BB4 5HH up to High BB4 5HR up to High

At-risk postcodes near BB4 5BU — all in the BB4 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. 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 BB4 district.