FloodRadar
Log inCreate free account
Live levels from 13 monitoring stations across East Sussex, Kent, updated every 15 minutes.
| Station | Level now | Status | ||
|---|---|---|---|---|
| Forest Row | -0.01 mASD 1h ago | Low | ||
| 7.9 km by river | ||||
| Summerford Bridge | 0.04 mASD 1h ago | Normal | ||
| 7.4 km by river | ||||
| Chafford | 0.19 mASD 1h ago | Normal | ||
| 1.1 km by river | ||||
| Colliers Land Bridge | 0.22 mASD 1h ago | Low | ||
| 10.0 km by river | ||||
| Leigh Flood Storage Area | 0.75 mASD 1h ago | Normal | ||
| 3.5 km by river | ||||
| Town Lockstructure | 1.14 mASD 1h ago | Normal | ||
| 4.2 km by river | ||||
| Hartlake Bridge | 0.66 mASD 1h ago | Normal | ||
| 8.7 km by river | ||||
| Yalding Hampstead Lockstructure | 1.65 mASD 1h ago | Normal | ||
| 4.7 km by river | ||||
| Teston | 0.37 mASD 1h ago | Normal | ||
| 3.3 km by river | ||||
| East Farleigh Gate Upstream | 1.28 mASD 1h ago | Normal | ||
| 3.5 km by river | ||||
| Maidstonestructure | 0.28 mASD 1h ago | Normal | ||
| 2.5 km by river | ||||
| Allington Marina | 0.12 mASD 1h ago | Normal | ||
| 820 m by river | ||||
| Allington Lockstructure | 3.86 mAOD 1h ago | Normal | ||
Also on the Medway by the river map, but filed under another river name: Leigh Barrier, LUCIFER BRIDGE GS, EAST FARLEIGH GS and ALLINGTON USGS.
Stations are listed from source to mouth as the water flows, traced on the river map (OS Open Rivers) and the Environment Agency’s own links between its gauges. A distance “by river” is along the river, and is shown only where the map traces the path.
Contains OS data © Crown copyright and database rights 2026.
Streams and rivers with a gauge whose water joins the Medway above one of its gauges, from the source down. Named streams without a gauge that have a page here are listed at the end.
Joins the Medway between Summerford Bridge and Chafford, no more than 7.4 km by river above Chafford.
| Hendal Bridge | 0.20 mASD 1h ago | Normal |
Its water passes Chafford and every gauge below it on the Medway. It does not pass Summerford Bridge or the gauges above it.
Joins the Medway between Colliers Land Bridge and Leigh Flood Storage Area, no more than 8.9 km by river above Leigh Flood Storage Area.
| Penshurst | 0.19 mASD 1h ago | Normal |
Its water passes Leigh Flood Storage Area and every gauge below it on the Medway. It does not pass Colliers Land Bridge or the gauges above it.
Joins the Medway between Hartlake Bridge and Yalding Hampstead Lock, no more than 9.2 km by river above Yalding Hampstead Lock.
| Hadlow | 0.29 mASD 1h ago | Normal |
Its water passes Yalding Hampstead Lock and every gauge below it on the Medway. It does not pass Hartlake Bridge or the gauges above it.
Joins the Medway between Hartlake Bridge and Yalding Hampstead Lock, no more than 9.3 km by river above Yalding Hampstead Lock.
| HADLOW EMGS | 0.11 m3/s 1h ago | — |
Its water passes Yalding Hampstead Lock and every gauge below it on the Medway. It does not pass Hartlake Bridge or the gauges above it.
Joins the Medway between Yalding Hampstead Lock and Teston, no more than 14.1 km by river above Teston.
| Smarden | 0.24 mASD 1h ago | Low |
| 17.9 km by river | ||
| Stilebridge | 0.11 mASD 1h ago | Low |
Its water passes Teston and every gauge below it on the Medway. It does not pass Yalding Hampstead Lock or the gauges above it.
Joins the Medway between Yalding Hampstead Lock and Teston, no more than 19.4 km by river above Teston.
| Bartley Mill | 0.16 mASD 1h ago | Normal |
| 7.0 km by river | ||
| Lamberhurstsensor suspect | 0.08 mASD 1h ago | — |
| 8.3 km by river | ||
| Stonebridge | 0.30 mASD 1h ago | Normal |
| 40 m by river | ||
| STONE BRIDGE GS | 0.82 m3/s 1h ago | — |
Its water passes Teston and every gauge below it on the Medway. It does not pass Yalding Hampstead Lock or the gauges above it.
No gauge below Allington Lock is known on the river map.
Tributaries and where they join are traced on the river map (OS Open Rivers, edition 2026-04) and the Environment Agency’s links between its gauges. The map holds distances between gauges, not the junctions themselves, so a junction is placed between two gauges, and no further up than the tributary’s own lowest gauge. Contains OS data © Crown copyright and database rights 2026.
79 storm overflows are traced upstream of Allington Lock, the Medway’s lowest gauge on the river map: on the Medway itself, on its gauged tributaries, and on smaller streams that join above there.
Official figures for 2025, for the overflows traced upstream of Allington Lock: 1,401 spills over 9,938 hours in total, across all 79.
Each overflow is listed in the stretch above the first gauge its water reaches, from the source down, as on the Gauges tab. A stretch of the Medway includes the smaller streams that join it there. Where a stretch or a tributary has more than 4, the 3 discharging now or nearest its gauge are listed, the rest are counted, and every one is in that gauge’s “Upstream of here” list. Show every overflow in every stretch →
and 3 more: show all 6 overflows on this stretch → All above Chafford, nearest first →
and 3 more: show all 6 overflows on this stretch → All above Hendal Bridge, nearest first →
and 2 more: show all 5 overflows on the Eden Tributary Medway and the streams that join it → All above Penshurst, nearest first →
and 2 more: show all 5 overflows on this stretch → All above Town Lock, nearest first →
and 3 more: show all 6 overflows on this stretch → All above Hartlake Bridge, nearest first →
and 8 more: show all 11 overflows on the Beult and the streams that join it → All above Stilebridge, nearest first →
and 7 more: show all 10 overflows on this stretch → All above Maidstone, nearest first →
and 2 more: show all 5 overflows on this stretch → All above ALLINGTON USGS, nearest first →
Within 3 km of one of the Medway’s gauges in a straight line, but the river map cannot say whether their water reaches it.
7 more near these gauges whose connection is not known.
A status is the water company’s own monitor: it says whether an overflow is discharging, never how much or why, and a spill does not by itself explain a change in a river level. A status older than two hours is shown as unknown. Annual figures are the official returns: 12/24-hour spills for England and Wales, overflow events for Scotland (Scottish Water counts differently, so the two cannot be compared). “No data” means the monitor produced no usable data that year, not zero. Overflows are placed on OS Open Rivers (edition 2026-04), which leaves out many small channels: an overflow the map cannot place may still drain here. Contains OS data © Crown copyright and database rights 2026. Sewage in Britain’s rivers →
Live status: © Southern Water storm overflow activity data, licensed under CC BY 4.0. Annual figures for England: Environment Agency Event Duration Monitoring return, © Environment Agency copyright and/or database right, Open Government Licence v3.0.
Dated samples taken by the Environment Agency, not live readings. Results are published days to months after the sample is taken, and many points are sampled only a few times a year, or have not been sampled for years.
127 sampling points on the River Medway and the streams that join it above Allington Lock. 59 have a sample from the last 12 months; 85 have any sample banked.
Sampled most recently, anywhere on the Medway and its streams:
| Where, from the source down | Sampling points | Newest sample |
|---|---|---|
| Eden Tributary Medway and its streamsjoins the Medway above Leigh Flood Storage Area | 24 points18 sampled | 29 Sep 2026 |
| Above Forest Row | 6 points2 sampled | 20 Aug 2026 |
| Above Hendal BridgeEridge Stream Tributary Medway · joins the Medway above Chafford | 4 points3 sampled | 28 Sep 2026 |
| Above Summerford Bridge | 5 points4 sampled | 2 Sep 2026 |
| River Teise and its streamsjoins the Medway above Teston | 14 points10 sampled | 15 Sep 2026 |
| Above Chafford | 7 points4 sampled | 28 Sep 2026 |
| River Beult and its streamsjoins the Medway above Teston | 19 points14 sampled | 15 Sep 2026 |
| Above Colliers Land Bridge | 1 point0 sampled | none banked |
| Above Leigh Flood Storage Area | 5 points3 sampled | 15 Sep 2026 |
| Above Town Lock | 2 points | 13 Mar 2026 |
| Above HADLOW EMGSRiver Bourne · joins the Medway above Yalding Hampstead Lock | 1 point0 sampled | none banked |
| Above HadlowRiver Bourne · joins the Medway above Yalding Hampstead Lock | 1 point | 22 Apr 2026 |
| Above Hartlake Bridge | 3 points | 27 Aug 2026 |
| Above Yalding Hampstead Lock | 5 points3 sampled | 15 Sep 2026 |
| Above Teston | 17 points10 sampled | 15 Sep 2026 |
| Above East Farleigh Gate Upstream | 1 point | 14 Sep 2026 |
| Above EAST FARLEIGH GS | 1 point0 sampled | none banked |
| Above Maidstone | 11 points7 sampled | 15 Sep 2026 |
England's samples only. Each count opens the list of those points, nearest first, with the date of each one’s latest sample (the gauge’s “Upstream of here” list).
FloodRadar does not grade these results: there is no overall score, and official river classifications are a separate dataset. A sample taken downstream of an overflow does not by itself show where anything in it came from. River connections and distances are traced on OS Open Rivers (edition 2026-04), which leaves out many small channels.
Water samples: Environment Agency Water Quality Archive, © Environment Agency and/or database right 2026, Open Government Licence v3.0.
Contains OS data © Crown copyright and database rights 2026.
FloodRadar helper · beta