River Allen at Wimborne
Knobcrook Road, Mill Lane and East Street in Wimborne
River Allen, River Stour Dorset Council
Postcode district
Flood risk in BH21
How exposed the BH21 postcode district (Bournemouth, Christchurch and Poole and Dorset) is to flooding from rivers, the sea and surface water, from a sample of points checked against the Environment Agency maps.
0%in Flood Zone 2 or 3
0%in Flood Zone 3
0%medium or high river and sea risk
0%some surface water risk
Based on 5 points spread across the district. An indication of the area, not a count of properties.
What the maps show around BH21
Most of the points we checked are outside the flood zones, but flood risk is local: a single street, underpass or stream can be the exception. We checked 5 points spread across the district: the centre and four points about 900 m away.
0% of the sample points are in Flood Zone 2 or 3 · 0% have some surface water risk
Overall: mostly lower risk. This describes the district as a whole, not your street.
Flood zone: 0 of 5 points in Zone 3 and 0 in Zone 2.
Flood warning areas near BH21
The Environment Agency issues flood alerts and warnings for these named areas within about six kilometres of the district centre.
River Allen at Wimborne Town Centre
Wimborne Road, Allenview Road, Hanham Road, Mill Lane, Crown Mead, East Street, High Street, Dean Court Lane, Millstream Close, Poole Road, Station Road and Newmans Close in Wimborne
River Allen Dorset Council
Lower Stour at Canford
Canford School
River Stour Bournemouth, Christchurch and Poole, Dorset Council
Lower Stour at Cowgrove
Roman Way and other Farm and Cottages in Cowgrove
River Stour Dorset Council
Lower Stour and tributaries
Tributaries between Wimborne and Christchurch
River Allen, River Stour Bournemouth, Christchurch and Poole, Dorset Council, Hampshire
River Allen and tributaries
Tributaries between Wimborne St Giles and Wimborne
River Allen Dorset Council
You can sign up for free flood warnings for your own address on GOV.UK.
Check your own BH21 postcode
The figures above describe the district. Your home is one point in it, and that point is what the check reads.
This district spans Bournemouth, Christchurch and Poole and Dorset.
Will your address flood, and can you get it insured and mortgaged?
Enter an English postcode and see free of charge its flood zone and the risk bands for rivers, the sea and surface water. What the numbers mean, which past floods were recorded around the property, which warning areas cover it and what to ask your insurer, surveyor and solicitor is in the report for that one point.
A flood is the most expensive thing that can happen to a home, and a flood zone or a surface water flow path can change the insurance terms, the mortgage offer and the resale price. The report gathers the Environment Agency data for your address before you commit; it is not a substitute for a flood search from your conveyancer.
- The flood zone and all three risk maps at your point: rivers and sea, surface water, with the annual chance in plain figures and a map of the ground around it
- Every recorded past flood and the flood warning areas that cover the address, with dates, sources and causes where the Environment Agency has them
- What it means for insurance, a mortgage and the building itself: Flood Re, questions for the surveyor and practical flood resilience measures, as a PDF you can share
England only. The short answer is free.
🔒 Card or PayPal via Mollie · download straight after payment, emailed as well · no subscription
Source: Environment Agency under the Open Government Licence · not a substitute for a flood search
Nearby postcode districts
Questions
Frequently asked questions
Is BH21 in a flood zone?
None of the 5 sample points we checked across the BH21 postcode district fall in Flood Zone 2 or 3. That does not rule out a zone elsewhere in the district, because the sample is a handful of points and flood zones can be narrow. Check your full postcode to be sure.
Is surface water flooding a risk in BH21?
None of the 5 sample points rate above very low for surface water flooding. Surface water risk is highly local, so check your own postcode.
Which flood warning areas cover BH21?
The Environment Agency issues flood alerts and warnings for named areas. Within about six kilometres of the centre of BH21 these include River Allen at Wimborne, River Allen at Wimborne Town Centre and Lower Stour at Canford. You can sign up for free flood warnings for your address on GOV.UK.
How accurate is a postcode district summary?
It is an indication, not a verdict on any single home. We checked 5 points around the centre of the district against the Environment Agency maps. A district can hold many streets and a flood zone can be a few metres wide. The free check on a full postcode, with a pin you can move onto your plot, is the precise answer.