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Tidal Medway, Medway estuary and Isle of Grain

Areas at risk of tidal flooding on the Tidal Medway, Medway estuary and Isle of Grain, including Aylesford, Medway Towns, Lower Halstow, Middle Stoke and Lower Stoke

Flood alert area River Medway Kent, Medway Kent S London and E Sussex

Flood Alert Active Warning

Raised: 26 Oct 2026 at 7:46am • Updated: 26 Oct 2026 at 7:46am
High tides today may lead to flooding.
Flooding is possible from 09:45 to 13:45 on Monday 26/10/2026.
Locations most affected will be coastal roads and footpaths.
We are closely monitoring the situation .
Avoid coastal roads, footpaths and carparks, which may be flooded.
This message will be updated by 4:00PM on Monday 26 October or as the situation changes.

Map

Nearby Monitoring Stations

Allington Lock
River Medway • Sandling • 13.7 km (downstream)
structure gauge
3.93 m
47min ago
Allington Marina
River Medway • Sandling • 14.0 km (downstream)
Rising · normal — Up 0.07 m since 03:00, still rising (0.07 m/h)
0.17 m
32min ago
Maidstone
River Medway • Maidstone • 15.7 km (downstream)
structure gauge
0.36 m
32min ago
East Farleigh Gate Upstream
River Medway • East Farleigh • 18.4 km (downstream)
Falling · normal — Down from 1.41 at 08:00, now 1.29
1.29 m
32min ago
Teston
River Medway • West Farleigh • 20.1 km (upstream)
Falling · normal — Down from 0.57 at 04:45, now 0.48
0.48 m
32min ago
Yalding Hampstead Lock
River Medway • Yalding • 23.6 km (upstream)
structure gauge
1.71 m
32min ago
Hartlake Bridge
River Medway • Golden Green • 29.5 km (upstream)
Crested · normal — Rose 0.22 m since 10:00 — peaked 0.83 at 11:30, now 0.75 and easing
0.75 m
32min ago
Sheerness
Tide • Sheerness • 10.5 km
tidal gauge
3.15 m
47min ago
Riddles Lane
Groundwater Level • 10.5 km
Rising · normal
18.04 m
40min ago
ALLINGTON USGS
• 14.2 km
tidal gauge
9.80 m
32min ago

Flood Event History (50)

26 Oct 2026 at 7:46am Flood Alert
High tides today may lead to flooding. Flooding is possible from 09:45 to 13:45 on Monday 26/10/2026. Locations most affected will be coastal roads and footpaths. We are closely monitoring the situation . Avoid coastal roads, footpaths and carparks, which may be flooded. This message will be updat...
25 Oct 2026 at 1:46pm Flood Alert
High tides overnight may lead to flooding.  Flooding is possible from 21:30 this evening, 25/10/2026 to 01:30 Monday 26/10/2026  Locations most affected will be coastal roads and footpaths.  We are closely monitoring the situation .  Avoid coastal roads, footpaths and carparks, which may be flooded....
3 Mar 2026 at 3:58pm Flood Alert
There is no longer a threat of flooding, though standing water and debris may still remain.  Coastal conditions are expected to improve and no flooding is expected.   We will continue to monitor the situation and will issue further alerts or warnings if necessary.   Continue to take care on waters...
3 Mar 2026 at 8:04am Flood Alert
High tides today may lead to flooding. Flooding is possible from 10:30 to 14:30 on 03/03/2026. High tide is expected at 12:30. Locations most affected will be coastal roads and footpaths. For those that need it, the forecast total peak water level at Sheerness is 3.52 m AOD. We are closely monito...
2 Mar 2026 at 4:46pm Flood Alert
High tides on Tuesday may lead to flooding.  Flooding is possible from 10:45 to 14:45 on 03/03/2026. High tide is expected at 12:45.  Locations most affected will be coastal roads and footpaths. For those that need it, the forecast total peak water level at Sheerness is 3.52 m AOD.  We are closely m...
6 Nov 2025 at 3:43pm Flood Alert
5 Nov 2025 at 4:45pm Flood Alert
24 Oct 2025 at 3:56pm Flood Alert
30 Mar 2025 at 8:05pm Flood Alert
30 Mar 2025 at 10:15am Flood Alert
3 Jan 2025 at 12:47pm Flood Alert
19 Dec 2024 at 9:55am Flood Alert
17 Nov 2024 at 5:11pm Flood Alert
16 Nov 2024 at 5:15pm Flood Alert
10 Apr 2024 at 8:58am Flood Alert
9 Apr 2024 at 3:21pm Flood Alert
8 Apr 2024 at 3:56pm Flood Alert
7 Apr 2024 at 7:11pm Flood Alert
10 Mar 2024 at 3:00pm Flood Alert
15 Jan 2024 at 9:10am Flood Alert
14 Jan 2024 at 5:53pm Flood Alert
24 Nov 2023 at 10:33am Flood Alert
29 Oct 2023 at 11:57pm Flood Alert
1 Sep 2023 at 1:29pm Flood Alert
3 Aug 2023 at 4:07pm Flood Alert
10 Mar 2023 at 8:59am Flood Alert
9 Mar 2023 at 6:40pm Flood Alert
24 Feb 2023 at 1:35pm Flood Alert
22 Feb 2023 at 3:59pm Flood Alert
26 Dec 2022 at 1:20am Flood Alert
22 Feb 2022 at 4:26pm Flood Alert
21 Feb 2022 at 8:42am Flood Alert
20 Feb 2022 at 4:45pm Flood Alert
6 Feb 2022 at 6:10pm Flood Alert
4 Feb 2022 at 8:15am Flood Alert
1 Feb 2022 at 4:21pm Flood Alert
31 Jan 2022 at 8:07am Flood Alert
4 Jan 2022 at 8:41am Flood Alert
7 Nov 2021 at 8:10am Flood Alert
4 Nov 2021 at 3:23pm Flood Alert
21 Oct 2021 at 9:53am Flood Alert
28 Apr 2021 at 6:50pm Flood Alert
19 Nov 2020 at 9:53am Flood Alert
16 Nov 2020 at 10:39am Flood Alert
10 May 2020 at 8:08pm Flood Alert
10 May 2020 at 9:17am Flood Alert
12 Apr 2020 at 7:46pm Flood Alert
13 Mar 2020 at 9:22am Flood Alert
12 Mar 2020 at 11:25am Flood Alert
11 Mar 2020 at 9:01am Flood Alert

Related Flood Areas

Lower River Medway
River Medway • Kent, Medway
Middle River Medway
River Medway • Kent
North Kent Marshes between Shorne Marsh and Allhallows
River Thames • Kent, Medway
River Medway at Leigh Village
River Medway • Kent
River Medway at Maidstone
River Medway • Kent
River Medway between Forest Row and Penshurst
River Medway • East Sussex, Kent, West Sussex
River Medway between Penshurst and Leigh
River Medway • Kent
River Medway between Yalding and Maidstone
River Medway • Kent
Tidal River Medway and Medway estuary
River Medway • Kent, Medway
Tidal River Medway from Allington to Cuxton
River Medway • Kent, Medway
Tonbridge and Hildenborough
River Medway • Kent
Upper River Medway
River Medway • East Sussex, Kent, Surrey, West Sussex

Official sources for this area

This area on the Environment Agency’s flood service →
Floodline quick dial: 217038 — call 0345 988 1188 and give that code for a recorded update on this area.
Area code: 064WAT1MedEst

Live warnings and area boundaries are the Environment Agency’s and the EA is the authority on them. Contains public sector information licensed under the Open Government Licence v3.0. This area in the EA’s own data.