A Flood Alert was issued for River Thames from Hampton and Thames Ditton to Teddington in Greater London, Kingston upon Thames, Richmond upon Thames, Surrey on 30th March 2026. Affected watercourses included the River Thames.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Thames at Sunbury Lock rose 0.22m, peaking at 2.71m, while the River Thames at Chertsey Lock climbed 0.18m.
Environment Agency advice issued
High tides today may lead to flooding. Flooding is possible from the morning of 30 March 2026. The next high tide is expected at Kingston at 13:15 and is forecast to reach between 5.06m - 5.36m. The following high tide is expected at 02:15 and is forecast to reach between 4.77m - 5.07m. No further rainfall is forecast. We expect river levels to remain high over the next few days. We are closely monitoring the situation . Avoid using low lying footpaths and any bridges near local watercourses . This message will be updated by 7:00PM on 30 March 2026 or as the situation changes.
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Sunbury Lock | River Thames | +0.22m | 2.71m |
| Chertsey Lock | River Thames | +0.18m | 2.94m |
| Shepperton Lock | River Thames | +0.14m | 2.96m |
| Kingston | River Thames | +0.13m | 58.28m |
| Thames Ditton Island | River Thames | +0.10m | 4.77m |