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Does BB2 4JF flood?

Blackburn, Blackburn with Darwen

Up to Medium likelihood

Properties in BB2 4JF sit in the Environment Agency's Medium 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 bandAnnual chancePropertiesOf which homes
Highgreater than 3.3%00
Medium1% – 3.3%90
Low0.1% – 1%300
Very lowbelow 0.1%00

Over a 25-year mortgage, a property in a medium-likelihood area has a 22–57% chance of flooding at least once.

The ground around BB2 4JF

The ground here sits at about 103 m above sea level and falls 46 m across the surrounding 800 m. Surface water reaching this point runs off ground lying to the south, 3.8 m higher.

Shaded relief map of the ground around BB24JF, computed from Environment Agency LiDAR. The ground here sits at about 103 m above sea level and falls 46 m across the surrounding 800 m. Surface water reaching this point runs off ground lying to the south, 3.8 m higher.
Shaded relief of the bare ground within about 400 m of BB2 4JF, computed from the Environment Agency's published LiDAR terrain survey. The ring marks the postcode centre, not a property. This shows the shape of the land, not a flood map — it does not include drains, culverts, walls or kerbs, and the official likelihood band above is the authoritative figure. © Environment Agency copyright and/or database right 2022. All rights reserved.
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Get the full flood report for BB2 4JF — £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 BB2 4JF

FloodRadarProperty Flood-Risk Report
BB2 4JF
Moderate flood risk — investigate further

Because properties in the medium likelihood band; 4 recorded floods nearby; 107 official warnings since 2006.

D 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: Yes ⚑ Flood defences within 500 m: Yes ⚑ In flood zone 2 or 3: ···
Rivers & sea
Up to Medium
Surface water
···
Groundwater
Not assessed
Historic flooding
Recorded nearby
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

The map above shows the real EA rivers & sea likelihood cells around BB2 4JF. 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 BB2 4JF

107
flood alerts & warnings within 10 km since 2006
27
of them full flood warnings or severe warnings
2025
most recent warning nearby (2025-12-08)

Warnings cover flood areas, not individual addresses.

Recorded floods near this postcode

DateRecorded floodApprox. distance
Jun 2012 Blackburn June 2012 ~1.1 km
Jun 2012 Branch Road - June 2012 ~1.0 km
Jun 2012 Branch Road - 22/06/2012 ~0.9 km
Jun 2002 DARW ~1.1 km

EA Recorded Flood Outlines — absence of a record never proves a place has not flooded. The full report tests whether any extent covered the exact spot.

Named storms that brought flooding here

2007 UK floods (2007, 4 warnings nearby) · Bert (2024, 4 warnings nearby) · Ciara (2020, 3 warnings nearby) · Aiden (2020, 2 warnings nearby)

The rivers that matter for BB2 4JF

GaugeRiverDistanceTypical highHighest on record
Ewood Ashville Terrace North Ewood Mill Race 0.3 km 1.40 m 0.51 m
Ewood River Darwen 0.3 km 1.25 m 2.22 m
Ewood Ashville Terrace South Ewood Mill Race 0.4 km 1.40 m 0.86 m
Blackburn Waterfall River Darwen 1.0 km 1.40 m 3.42 m

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

Storm overflows within 5 km

OverflowDischarges intoDistanceSpillsHours
Bolton Road Combined Sewer Overflow Unnamed Trib Of River Darwen 0.4 km 54 (2024) 59
Aqueduct Road Cso River Darwen 0.5 km 71 (2024) 569
Infirmary Street Cso 05050 Leeds/liverpool Canal 1.0 km 28 (2024) 276
Wellington Road Cso River Darwen 1.2 km 2 (2024) 0

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

Flood defences

20 mapped flood-defence assets within 500 m — nearest ~128 m (natural high ground, embankment, 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

BB2 4AU up to Low BB2 4AW up to Low BB2 4AY up to Low BB2 4BE up to Low BB2 4BH up to Low BB2 4BJ up to Medium BB2 4BL up to Medium BB2 4BQ up to Low BB2 4EE up to Low BB2 4ET up to Low BB2 4GT up to Low BB2 4HT up to High

At-risk postcodes near BB2 4JF — all in the BB2 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 BB2 district.