Does BB3 flood?

Yes — parts of the BB3 district carry real flood risk: 41 of its 99 at-risk postcodes reach the Environment Agency's High likelihood band. The BB3 postcode district sits close to Darwen, Blackburn, Lower Darwen and surrounding villages in parts of Lancashire and Blackburn with Darwen.

99 postcodes in the BB3 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 41 high, 21 medium, 37 low. A postcode not listed here has no properties in any recorded risk band (which is good news, but never proof it cannot flood).

Free preview first · full report £19

Which BB3 postcodes are at risk?

BB3 0DN up to High BB3 0DQ up to High BB3 0EJ up to High BB3 0PP up to High BB3 0PQ up to High BB3 0PR up to High BB3 0PW up to High BB3 1AD up to High BB3 1AR up to High BB3 1AT up to High BB3 1AY up to High BB3 1BF up to High BB3 1DW up to High BB3 1EH up to High BB3 1EJ up to High BB3 1EL up to High BB3 1EN up to High BB3 1ES up to High BB3 1ET up to High BB3 1EU up to High BB3 1EX up to High BB3 1HA up to High BB3 1HB up to High BB3 1HG up to High BB3 1HQ up to High BB3 1HW up to High BB3 1NS up to High BB3 1PX up to High BB3 1QE up to High BB3 1QJ up to High BB3 1QL up to High BB3 1QQ up to High BB3 1QW up to High BB3 2DW up to High BB3 2ER up to High BB3 2ES up to High BB3 2ET up to High BB3 2JJ up to High BB3 2JN up to High BB3 2QJ up to High BB3 3PE up to High BB3 0PU up to Medium BB3 0PX up to Medium BB3 0QE up to Medium BB3 1AE up to Medium BB3 1DF up to Medium BB3 1DJ up to Medium BB3 2AA up to Medium BB3 2AD up to Medium BB3 2AY up to Medium BB3 2DZ up to Medium BB3 2PN up to Medium BB3 2PP up to Medium BB3 2PR up to Medium BB3 2PS up to Medium BB3 2PT up to Medium BB3 2PU up to Medium BB3 2QG up to Medium BB3 2QZ up to Medium BB3 2RB up to Medium BB3 3NS up to Medium BB3 3NZ up to Medium BB3 0AJ up to Low BB3 0DA up to Low BB3 0FD up to Low BB3 0FF up to Low BB3 0FH up to Low BB3 0GX up to Low BB3 0LD up to Low BB3 0PG up to Low BB3 0PY up to Low BB3 0RD up to Low BB3 0RE up to Low BB3 0RF up to Low BB3 0RN up to Low BB3 0SG up to Low BB3 0SR up to Low BB3 1AJ up to Low BB3 1AU up to Low BB3 1AX up to Low BB3 1AZ up to Low BB3 1BE up to Low BB3 1BG up to Low BB3 1BH up to Low BB3 1BQ up to Low BB3 1BT up to Low BB3 1DB up to Low BB3 1DP up to Low BB3 1DQ up to Low BB3 1PS up to Low BB3 1QP up to Low BB3 1QR up to Low BB3 2AB up to Low BB3 2BF up to Low BB3 2PG up to Low BB3 3HA up to Low BB3 3NY up to Low BB3 3RT up to Low BB3 3SS up to Low

Rivers and flooding history near BB3

The rivers that matter here, each monitored live on FloodRadar:

11 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (11 at warning level or above), most recently 20 September 2025. Warnings cover flood areas, not individual addresses.

Recorded flood extents near the district (Environment Agency record):

🏠 Buying or renting in BB3? The full property flood-risk report covers any postcode here — the official likelihood band, every recorded flood nearby with distances, warning history year by year, how the local rivers behave, and an insurance outlook, print-ready for £19. See what's in the report →

Flood risk in nearby postcode districts

BB2 BB4 BB1 BB5 BB6 BB7 BB8 BB9

Band = the worst likelihood band of any property in that postcode (EA Risk of Flooding from Rivers & Sea, defence-adjusted, area-level). Check any postcode in detail — or get the full £19 property report — at the property flood-risk report. © 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.