A Flood Warning was issued for Groundwater flooding for the Iwerne in Dorset Council on 23rd February 2026. Affected watercourses included the Groundwater.
During this event, FloodRadar monitoring gauges recorded notable rises. The Groundwater Level at Horton Inn rose 1.09m, peaking at 43.95m, while the Groundwater Level at Badbury Rings climbed 0.94m.
Environment Agency advice issued
High groundwater levels are expected to cause flooding. The groundwater level at the Iwerne Hill Farm borehole is at 115.012m, and is expected to remain high. Areas that could be affected include: Iwerne Minster. Residents are advised to prepare property resilience measures and ensure that pumps are working where they have been installed. Residents may experience inundation of septic tanks and sewer systems. Properties may experience flooding in cellars in affected areas. Flooding of roads is expected, please take care when driving. We are closely monitoring the situation. If you have a pump,
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Horton Inn | Groundwater Level | +1.09m | 43.95m |
| Badbury Rings | Groundwater Level | +0.94m | 39.37m |
| Ridge Way | Groundwater Level | +0.87m | 84.18m |
| Ashmore | Groundwater Level | +0.79m | 136.22m |
| Woodyates | Groundwater Level | +0.71m | 105.43m |
| Iwerne Hill Farm | Groundwater Level | +0.54m | 115.09m |
| Delcombe Wood | Groundwater Level | +0.53m | 142.42m |
| The Terraces Fonthill | Groundwater Level | +0.48m | 117.52m |
| Doles Ash | Groundwater Level | +0.21m | 122.52m |
| Musseldean Copse | Groundwater Level | +0.19m | 135.60m |