A Flood Alert was issued for River Pinn and Woodridings Stream in Greater London, Harrow, Hillingdon on 27th August 2026. Affected watercourses included the River Pinn.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Pinn at Uxbridge, Philpots Bridge rose 0.13m, peaking at 0.88m, while the River Pinn at Waxwell Lane climbed 0.08m.
Environment Agency advice issued
Rising river levels may lead to flooding this evening Thursday 27 August 2026 due to forecast heavy rain and storms. Locations most affected will be Woodhall Gate, Albury Drive, Murray Crescent, Grange Gardens, Chapel Lane, Marsh Road, Hatch End, High Road. Flooding from surface water, where water gathers and flows off road surfaces, could also occur. We expect river levels in areas that receive the heaviest rain to respond by rising quickly. Further heavy rain and thunderstorms are forecast tonight Thursday 27 August and into Friday 28 August. We are closely monitoring the situation and we ar
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Uxbridge, Philpots Bridge | River Pinn | +0.13m | 0.88m |
| Waxwell Lane | River Pinn | +0.08m | 0.21m |
| Pinner, Eastcote Road | River Pinn | +0.06m | 0.42m |
| Ruislip | River Pinn | +0.06m | 0.20m |
| Howletts Lane, Ruislip | Cannon Brook | +0.06m | 0.17m |
| Pinner, Avenue Road | River Pinn | +0.05m | 0.28m |