Last 5 DaysiReading this chart The blue line near the bottom is the river's height at Threlkeld, rising and falling over the last five days.
The bars hanging down from the top are rainfall — drawn falling from the sky, the way hydrologists chart it. Longer bars mean heavier rain. They come from an Environment Agency gauge up in the river's catchment near Mungrisdale, where rain on the fells gathers before flowing down to the village.
The story to look for: when the rain bars grow, the river line usually rises a few hours later — the time it takes water to run off Blencathra and the surrounding fells into the Glenderamackin. A dry spell shows few or no bars and a low, steady line.
The dashed line marks the top of the river's normal range (2m); the figure top-right is the total catchment rainfall over 48 hours.
River Glenderamackin at Threlkeld
River level (m) Catchment rainfall
Historical Context
Glenderamackin at Threlkeld
2.57m
All-time record
5 December 2015
0.50–2.00m
Normal range
90% of readings
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Current level
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Nearby Stations
Within 10 miles
Lakes & Reservoirs
Northern Lake District
Wild Swimming Conditions
Indicative only · Always check before you swim
Conditions are estimated from river levels, recent rainfall and EA annual classifications — not direct water testing.
They are not a substitute for checking on the day. After heavy rainfall, even good-rated lakes can have elevated E. coli from agricultural runoff. Never swim alone, be aware of cold water shock, and check for local restrictions. EA bathing water profiles ↗