A Flood Alert was issued for Groundwater flooding in Finchdean, Dean Lane End and Rowlands Castle in Hampshire, West Sussex on 9th March 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The West Brook at Emsworth rose 0.08m, peaking at 1.90m.
Environment Agency advice issued
Groundwater levels in Finchdean, Dean Lane End and Rowlands Castle are slowly falling. In the last week, the level at the borehole in Finchdean has fallen by 8cm. Flooding is expected to be affecting a small number of cellars in Finchdean, Dean Lane End and Rowlands Castle. Road flooding is expected to be ongoing. Sewerage system impacts could also be possible. Only a small amount of rain (between 10 and 20mm) is forecast to affect Hampshire between Monday 09/03/2026 and Friday 13/03/2026. Over the weekend and into next week, further unsettled weather is possible. Groundwater levels are expect
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Emsworth | West Brook | +0.08m | 1.90m |