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Does CH1 flood?

Yes — parts of the CH1 district carry real flood risk: 72 of its 129 at-risk postcodes reach the Environment Agency's High likelihood band. The CH1 postcode district covers Blacon, Saughall & Mollington, Queensferry and Sealand, close to Abbot's Mead, Chester, Chester, Bridge Trafford, and surrounding villages in parts of Cheshire West and Chester and Wrexham.

129 postcodes in the CH1 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 72 high, 32 medium, 21 low, 4 very 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 CH1 postcodes are at risk?

CH1 1QQ up to High CH1 1SB up to High CH1 1SD up to High CH1 1SL up to High CH1 2LY up to High CH1 2NN up to High CH1 4AY up to High CH1 4AZ up to High CH1 4BG up to High CH1 4BH up to High CH1 4BQ up to High CH1 4DN up to High CH1 4GB up to High CH1 4HZ up to High CH1 4JA up to High CH1 4JB up to High CH1 4JD up to High CH1 4JE up to High CH1 4JF up to High CH1 4JH up to High CH1 4JL up to High CH1 4JR up to High CH1 4JS up to High CH1 4JT up to High CH1 4JU up to High CH1 4JX up to High CH1 4JY up to High CH1 4LA up to High CH1 4LB up to High CH1 4LD up to High CH1 4LE up to High CH1 4LG up to High CH1 4LJ up to High CH1 4LL up to High CH1 4LN up to High CH1 4LP up to High CH1 4LQ up to High CH1 4LW up to High CH1 4LZ up to High CH1 4NN up to High CH1 4NT up to High CH1 4PG up to High CH1 4PH up to High CH1 4PR up to High CH1 4PT up to High CH1 4PZ up to High CH1 4QG up to High CH1 4QJ up to High CH1 4QL up to High CH1 4QN up to High CH1 4QP up to High CH1 4QR up to High CH1 4QT up to High CH1 4RY up to High CH1 5AH up to High CH1 5AJ up to High CH1 5AL up to High CH1 5AN up to High CH1 5AP up to High CH1 5AQ up to High CH1 5AR up to High CH1 5AW up to High CH1 5DR up to High CH1 5FE up to High CH1 5FF up to High CH1 5FG up to High CH1 5FH up to High CH1 5SA up to High CH1 5SB up to High CH1 5SD up to High CH1 5SF up to High CH1 6HX up to High CH1 4BE up to Medium CH1 4BT up to Medium CH1 4DP up to Medium CH1 4DY up to Medium CH1 4EA up to Medium CH1 4EQ up to Medium CH1 4EX up to Medium CH1 4JG up to Medium CH1 4JJ up to Medium CH1 4JP up to Medium CH1 4JQ up to Medium CH1 4LF up to Medium CH1 4LH up to Medium CH1 4LS up to Medium CH1 4LT up to Medium CH1 4LU up to Medium CH1 4LX up to Medium CH1 4NE up to Medium CH1 4NS up to Medium CH1 4NW up to Medium CH1 4PA up to Medium CH1 4PU up to Medium CH1 4PY up to Medium CH1 4QS up to Medium CH1 4QX up to Medium CH1 4RJ up to Medium CH1 4RL up to Medium CH1 4RN up to Medium CH1 4RW up to Medium CH1 5ST up to Medium CH1 6BJ up to Medium CH1 6BS up to Medium CH1 1HF up to Low CH1 1HJ up to Low CH1 3AE up to Low CH1 3AT up to Low CH1 3BB up to Low CH1 3BF up to Low CH1 3BH up to Low CH1 3BQ up to Low CH1 3DR up to Low CH1 4AJ up to Low CH1 4AQ up to Low CH1 4BP up to Low CH1 4DG up to Low CH1 4DW up to Low CH1 4JN up to Low CH1 4LY up to Low CH1 4NP up to Low CH1 4PS up to Low CH1 4QB up to Low CH1 5QX up to Low CH1 6NE up to Low CH1 1SZ up to Very low CH1 4DZ up to Very low CH1 4PL up to Very low CH1 4QD up to Very low

Rivers and flooding history near CH1

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

43 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (41 at warning level or above), most recently 6 January 2025. Counted from the warning records of the Environment Agency and Natural Resources Wales; the Environment Agency's record covers England only. Warnings cover flood areas, not individual addresses.

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

Records, not floods: no outline on the record is not evidence a place has not flooded.

🏠 Buying or renting in CH1? 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

CH2 CH3 CH4 CH5 CH41 CH42 CH43 CH44

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.