A Flood Alert was issued for River Thames at Trowlock Island in Greater London, Richmond upon Thames between 2nd and 7th March 2026. Affected watercourses included the River Thames.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Thames at Thames Ditton Island rose 0.74m, peaking at 5.51m, while the River Thames at Sunbury Lock climbed 0.41m.
Environment Agency advice issued
High river levels today may lead to flooding. Flooding of low lying land is possible on 07 March 2026. The next high tide is expected at Trowlock Island at 17:30 on 07 March 2026 and is forecast to reach between 4.74m - 4.88m. The following high tide is expected at 05:15 on 08 March 2026 and is forecast to reach between 4.67m - 4.81m. Showers are forecast today into the evening with light rain continuing over the weekend. We expect river levels to remain high over the next few days. We are closely monitoring the situation. We are monitoring rainfall and river levels. Avoid using low lying foot
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Thames Ditton Island | River Thames | +0.74m | 5.51m |
| Sunbury Lock | River Thames | +0.41m | 3.09m |
| Chertsey Lock | River Thames | +0.37m | 3.30m |