A Flood Alert was issued for Upper River Derwent, Stonethwaite Beck and Derwent Water in Cumberland between 24th and 26th March 2026. Affected watercourses included the Derwent, Stonethwaite Beck.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Glenderamackin at Threlkeld rose 1.08m, peaking at 1.62m, while the River Greta at Greta Bridge climbed 1.07m.
Environment Agency advice issued
Derwent Water levels remain high following recent heavy rainfall. Locations most affected will be around the shores of Derwent Water Lake. Take care and avoid walking, cycling or driving through flood water . We are closely monitoring the situation . This message will be updated by 10:00AM on 27 March 2026 or as the situation changes.
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Threlkeld | River Glenderamackin | +1.08m | 1.62m |
| Greta Bridge | River Greta | +1.07m | 2.24m |
| Keswick Campsite | River Greta | +1.04m | 1.67m |
| Riddings Wood | River Greta | +0.99m | 2.32m |
| Lodore | Derwentwater | +0.79m | 1.60m |
| Portinscale | River Derwent | +0.78m | 1.41m |
| Scalehill Upper Lorton Valley | River Cocker | +0.49m | 1.05m |
| Glenridding Village | Glenridding Beck | +0.41m | 0.57m |
| Thirlmere | St Johns Beck | +0.25m | 0.46m |