Flood Risk In Hampshire

1.2% of homes in Hampshire are in a Medium or High flood risk band, across 634,625 dwellings. It ranks 15 of 21 English counties.

Rivers and the sea Low a 0.1% to 1% chance in any year

Surface water 45,239 addresses at risk that rivers and sea does not explain — a minimum, not a total

Groundwater Not mapped 1,222 postcodes here are in a groundwater alert area; no likelihood band is published

Reservoirs Not mapped No national band is published for this source

The county band is the aggregate of its 11 districts: 5,372 homes at High, 2,359 at Medium, 8,791 at Low and 2,061 at Very Low — summing to the 18,583 homes at risk this page opens with.

Towns In Hampshire, Ranked By Flood Risk

1 South Hayling Low 7.5% of homes at Medium or High
2 Yateley High 6.6% of homes at Medium or High
3 Denmead High 5.4% of homes at Medium or High
4 Marchwood Low 5.3% of homes at Medium or High
5 Blackwater (Hart) High 5.1% of homes at Medium or High
6 Ringwood Low 4.9% of homes at Medium or High
7 Whitchurch (Basingstoke and Deane) Low 4.2% of homes at Medium or High
8 Havant Low 4% of homes at Medium or High
9 Romsey Low 3.9% of homes at Medium or High
10 Emsworth High 3.5% of homes at Medium or High
11 Hook (Hart) Medium 3.2% of homes at Medium or High
12 Totton Low 2.8% of homes at Medium or High
13 Chandler's Ford Low 2.4% of homes at Medium or High
14 Gosport Low 1.1% of homes at Medium or High
15 Fleet Low 1.1% of homes at Medium or High
16 Liss Low 1.1% of homes at Medium or High
17 Hythe and Dibden Purlieu Very low 1% of homes at Medium or High
18 Basingstoke Low 1% of homes at Medium or High
19 Lymington Low 1% of homes at Medium or High
20 Bursledon High 0.8% of homes at Medium or High
21 Fareham High 0.8% of homes at Medium or High
22 Waterlooville Low 0.6% of homes at Medium or High
23 Odiham High 0.5% of homes at Medium or High
24 New Alresford High 0.5% of homes at Medium or High
25 Aldershot Low 0.5% of homes at Medium or High
26 New Milton High 0.4% of homes at Medium or High
27 Hedge End Low 0.4% of homes at Medium or High
28 Netley High 0.4% of homes at Medium or High
29 Whiteley Low 0.3% of homes at Medium or High
30 Barton on Sea High 0.3% of homes at Medium or High
31 Alton (East Hampshire) Low 0.3% of homes at Medium or High
32 Petersfield Low 0.3% of homes at Medium or High
33 Ashley (New Forest) Medium 0.2% of homes at Medium or High
34 Bishop's Waltham Low 0.2% of homes at Medium or High
35 Winchester Low 0.2% of homes at Medium or High
36 Locks Heath Low 0.1% of homes at Medium or High
37 Eastleigh Low 0.1% of homes at Medium or High
38 Lee-on-the-Solent Low 0.1% of homes at Medium or High
39 Holbury High 0.1% of homes at Medium or High
40 Andover Low 0% of homes at Medium or High

Ranked within England only. Each town's figure counts its own homes, so the shares are comparable with each other but not with towns in Scotland, Wales or Northern Ireland.

Which Rivers Run Through Hampshire?

Rivers with a gauged station in one of the towns ranked above. Each river page carries every gauge on it and the live level at each.

River Test levels 11 gauging stations on this river
River Itchen levels 9 gauging stations on this river
River Lavant levels 4 gauging stations on this river
Bartley Water levels 3 gauging stations on this river
Lymington levels 3 gauging stations on this river
River Anton levels 3 gauging stations on this river
River Hamble levels 3 gauging stations on this river
Monks Brook levels 2 gauging stations on this river
Petersfield Stream levels 2 gauging stations on this river
River Alre levels 2 gauging stations on this river
River Wallington levels 2 gauging stations on this river
Cheriton Stream levels 1 gauging station on this river

How Does Hampshire Compare With Other English Counties?

Hampshire ranks 15 of 21 English counties for the share of homes in a Medium or High flood risk band. That is below the median county, at 1.8%. The comparison covers the 21 shire counties only — the 132 unitary authorities, including Bristol, York and Sheffield, have no county above them and so take no rank here.

A county figure is an aggregate of its districts, and districts differ sharply: a fenland district and an upland one in the same county can sit at opposite ends of the national ranking. Compare the towns above rather than the county total where it matters.

Share of homes in a Medium or High band, from the Environment Agency's national assessment. The method · The national picture