A Flood Alert was issued for Groundwater flooding in upper River Ems Valley in West Sussex on 17th March 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The West Brook at Emsworth rose 0.09m, peaking at 2.05m.
Environment Agency advice issued
Groundwater is high, very close to the surface, but slowly falling at the Compton borehole. Springs will continue to appear, water will be in fields, and water will flow down roads, including Stoughton main road, the road from East Marden, between Cooks Lane and Barley Mow in Walderton, and the B2146 near Woodlands Lane. Groundwater will also affect a small number of cellars in Stoughton and Walderton. Only showers, or small amounts of rain are forecast over the next 5 days to Saturday 21/03/2026. Groundwater at Compton borehole is expected to continue to fall. It is probable that groundwater
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Emsworth | West Brook | +0.09m | 2.05m |