Does DT1 flood?

Yes — parts of the DT1 district carry real flood risk: 9 of its 23 at-risk postcodes reach the Environment Agency's High likelihood band. The DT1 postcode district covers Dorchester East, Dorchester West, close to Stinsford, Martinstown Or Winterborne St Martin, Bank Barrow, and surrounding villages in Dorset.

23 postcodes in the DT1 district appear in the Environment Agency's rivers-and-sea flood-risk dataset — worst bands: 9 high, 2 medium, 12 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 DT1 postcodes are at risk?

DT1 1HU up to High DT1 1JG up to High DT1 1LG up to High DT1 1LT up to High DT1 1LX up to High DT1 1PL up to High DT1 1XE up to High DT1 1XU up to High DT1 1XW up to High DT1 1NE up to Medium DT1 1NF up to Medium DT1 1AB up to Low DT1 1LJ up to Low DT1 1LL up to Low DT1 1LQ up to Low DT1 1LW up to Low DT1 1ND up to Low DT1 1NQ up to Low DT1 1PE up to Low DT1 1PH up to Low DT1 1SS up to Low DT1 1SX up to Low DT1 1WY up to Low

Rivers and flooding history near DT1

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

Louds Mill on the River Frome — 1.2 km away, highest on record 0.65m
Stinsford on the River Frome — 1.5 km away, highest on record 1.24m
Ridge Way on the Groundwater Level — 3.9 km away, highest on record 89.03m
Ashton Farm on the Groundwater Level — 4.5 km away, highest on record 71.76m

575 official flood warnings and alerts have been raised within ~10 km of the district's centre since 2006 (298 at warning level or above), most recently 6 April 2026. Warnings cover flood areas, not individual addresses.

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

Flood Extents_Winter 2013 to 2014 (2014) — about 26.1 km from the centre
Charminster_Winter 2013 to 2014 (2014) — about 2.6 km from the centre
Charminster_Winter 2013 to 2014 (2014) — about 2.6 km from the centre

🏠 Buying or renting in DT1? 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

DT2 DT3 DT4 DT5 DT6 DT7 DT8 DT9

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.