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Does Maidstone flood? 132 postcodes in Maidstone are in the Environment Agency's rivers-and-sea flood-risk data (41 High, 27 Medium likelihood) — the breakdown is further down this page.
Conditions are worth watching: the Environment Agency has a Flood Alert in force for The Essex coast at Coalhouse Fort — flooding is possible from 11:30pm Friday 9th October through to 1:30am on Saturday 10th October. Flooding is possible — be prepared and keep an eye on updates.
Updated 2026-10-09 18:46:08 UTC · Official GOV.UK warnings · Flood preparation & help guide
Maidstone is the largest town in the county of Kent in South East England, of which it is also the county town. Maidstone is historically important and lies 32 miles (51 km) east-south-east of London. The River Medway runs through the centre of the town, linking it with Rochester and the Thames Estuary. Historically, the river carried much of the town's trade as the centre of the agricultural county of Kent, which is known as the Garden of England. There is evidence of settlement in the area dating back before the Stone Age. The town, part of the borough of Maidstone, had an approximate population of 100,000 in 2019. Since World War II, the town's economy has shifted from heavy industry towards light industry and services.
Ordnance Survey places 132 postcodes in Maidstone in the Environment Agency's rivers-and-sea flood-risk dataset (Risk of Flooding from Rivers and Sea). Each postcode is counted once, under the worst band any of its properties reaches; together they hold 2,075 properties in the EA dataset's likelihood bands.
| EA likelihood band | Postcodes (worst band) | Properties in the EA dataset | of which homes |
|---|---|---|---|
| High | 41 | 372 | 264 |
| Medium | 27 | 280 | 193 |
| Low | 47 | 1,013 | 664 |
| Very low | 17 | 410 | 48 |
| All bands | 132 | 2,075 | 1,169 |
This dataset covers flooding from rivers and the sea only — one of five flood sources. Surface water, groundwater, sewers and reservoirs are assessed separately, so a postcode missing from it is not proof that a place cannot flood. The band describes the land around properties (allowing for defences), not any single address and not today's conditions.
…and 32 more at-risk postcodes, listed on the district pages below.
Aylesford · New Hythe · Lunsford · East Peckham
Flood-risk bands: © 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.
Place names: Contains OS data © Crown copyright and database rights 2026. Contains Royal Mail data © Royal Mail copyright and database right 2026. Contains National Statistics data © Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0.
The nearest watercourse on the river map is the River Medway, about 20 m from the middle of Maidstone's gauges. It flows on to the sea.
A gauge downstream shows water that has already passed this point; one upstream sees it first. Distances along the river are from the point on the River Medway nearest the middle of Maidstone's gauges. From Ordnance Survey’s river map (OS Open Rivers), which leaves out small streams, ditches and culverts, so a nearer one may exist. This describes where water goes on the map; it says nothing about flooding at any address. Contains OS data © Crown copyright and database rights 2026.
Maidstone is monitored by 1 Environment Agency river level station on the River Medway, in Kent. Water levels are updated every 15 minutes, providing real-time flood monitoring for the area.
The River Medway is monitored by 1 station (Maidstone). Each station records water levels continuously, with data synced to FloodRadar every 5 minutes.
There are 8 Environment Agency flood warning areas within 10km of Maidstone. When the EA issues a flood warning for any of these areas, it will appear on this page. These include: River Medway at Maidstone, including Tovil, Allington, Allington Marina and Aylesford; River Medway from Hampstead Lock at Yalding to Allington Lock, including East Farleigh, Wateringbury, Teston and Teston Park, Tovil and Maidstone including Millennium Park; River Medway between Yalding and Maidstone, including Wateringbury, West Farleigh, Teston and East Farleigh; Tidal River Medway between Allington and Cuxton.
There are 19 storm overflows within 5km of Maidstone. None of the 18 with a reporting monitor are currently discharging (1 has no live status right now). Enable "Sewage" on the map above to see their locations.
6 of them, nearest first, with their own page of live status and past discharges:
If flooding is forecast in Maidstone, call Floodline on 0345 988 1188 for the latest information. Move valuables upstairs, turn off gas and electricity if safe to do so, and avoid walking or driving through flood water. Sign up for flood warnings on any station page above to receive email alerts when water levels rise. For emergency numbers, a preparation checklist and insurance guidance, see our flood help & preparation guide.
Maidstone gets about 685 mm of rain a year on average (wettest month November, 78 mm; driest July, 43 mm). That is 41% drier than the UK as a whole, which averages 1,163 mm a year. See the rain gauges →
A thirty-year average for the area, not a forecast and not a flood risk on its own. Source: Met Office HadUK-Grid 1991–2020 (5 km grid), 2.7 km away. Average rainfall: HadUK-Grid v1.3.2, Met Office. Contains public sector information licensed under the Open Government Licence v3.0.
Floods whose mapped extent (EA Recorded Flood Outlines) reached within ~5 km of the town centre — most recent first. These are records of mapped extents, not a full list of floods. See them on the map →
Records, not floods: no outline on the record is not evidence a place has not flooded.
Current verdict: Watch. Conditions are worth watching: the Environment Agency has a Flood Alert in force for The Essex coast at Coalhouse Fort — flooding is possible from 11:30pm Friday 9th October through to 1:30am on Saturday 10th October. Flooding is possible — be prepared and keep an eye on updates.
Maidstone has river level monitoring on River Medway — 1 monitoring station in total.
Use the GOV.UK Check for Flooding service (check-for-flooding.service.gov.uk) or call Floodline on 0345 988 1188 (24 hours). You can also set up free FloodRadar email or browser alerts from any station page above.
Follow official advice: move valuables and vehicles to safety, never walk or drive through flood water, turn off gas and electricity if safe, and check on vulnerable neighbours. See our flood preparation guide at floodradar.co.uk/flood-help.
Yes — the Environment Agency's Recorded Flood Outlines dataset shows 8 recorded flood extents around the town centre since 1703, most recently in 2013. That is a count of mapped extents, not of separate floods. Records, not floods: no outline on the record is not evidence a place has not flooded. See the flood history link below.
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