A Flood Alert was issued for Upper River Derwent, Stonethwaite Beck and Derwent Water in Cumberland on 11th October 2026. Affected watercourses included the Derwent, Stonethwaite Beck.
During this event, FloodRadar monitoring gauges recorded notable rises. The River Greta at Keswick Campsite rose 0.41m, peaking at 1.23m, while the River Glenderamackin at Threlkeld climbed 0.40m.
Environment Agency advice issued
There is no longer a threat of flooding. Weather conditions are expected to improve and no further flooding is expected. We are forecasting that the lake levels will continue to drop over the next couple of days. We will continue to monitor the situation and will issue further alerts or warnings if necessary. Continue to take care on waterside roads and footpaths and don't put yourself in unnecessary danger.
Monitoring gauges during this event
| Station | River | Rise | Peak |
|---|---|---|---|
| Keswick Campsite | River Greta | +0.41m | 1.23m |
| Threlkeld | River Glenderamackin | +0.40m | 1.02m |
| Riddings Wood | River Greta | +0.38m | 1.68m |
| Greta Bridge | River Greta | +0.36m | 1.53m |
| Scalehill Upper Lorton Valley | River Cocker | +0.31m | 1.08m |
| Portinscale | River Derwent | +0.31m | 1.12m |
| Lodore | Derwentwater | +0.25m | 1.48m |
| Glenridding Village | Glenridding Beck | +0.21m | 0.44m |
| Thirlmere Reservoir (Spillway level = 16.55m) | Thirlmere Reservoir | +0.16m | 10.63m |