A Flood Alert was issued for Tidal River Avon at Bristol, Pill and Shirehampton in City of Bristol, North Somerset, South Gloucestershire on 20th March 2026. Affected watercourses included the River Avon.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Avon at Ashton Vale rose 2.08m, peaking at 2.98m, while the River Avon at Netham Weir climbed 1.34m.
Environment Agency advice issued
High tides tomorrow morning may lead to flooding. Flooding is possible from 08:30 to 09:30 on 21 March 2026. The detailed tidal forecast for those who use it is for a peak level at Avonmouth. The forecast high water is at 08:45 AM on 21/03/2026 with a level of 7.40 mAODN with North East force 2 winds (mAODN is height above average sea level). Please note all tide times are in local time and refer to the high water time at Avonmouth. Areas most at risk include the tidal River Avon from Sea Mills to Conham in Bristol and between the Avonmouth Bridge and Shirehampton Park including Pill and Shi
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Ashton Vale | River Avon | +2.08m | 2.98m |
| Netham Weir | River Avon | +1.34m | 1.70m |
| Bath Destructor Bridge | River Avon | +0.64m | 3.93m |
| Bristol Netham Lock | River Avon | +0.27m | 6.19m |
| Saltford | River Avon | +0.15m | 0.77m |
| Keynsham, Rivermead | River Avon | +0.14m | 4.90m |
| Bathford | River Avon | +0.05m | 1.02m |