Foulridge Upper Reservoir
Cumbria and Lancashire, EnglandView mapDirections
EA publishes the water-quality measurements for Foulridge Upper Reservoir. Here is what has been measured.
- Limited data
Foulridge Upper Reservoir in Cumbria and Lancashire, England has official water-quality measurements, shown as reported. Phosphorus: 98.5 µg/L. Chlorophyll-a (algae): 22.5 µg/L.
How Foulridge Upper Reservoir is classified
Foulridge Upper Reservoir in England is published with the authority's own measurements and class. The measurements here are published by the agency that samples the lake, as reported. Sampling here has recorded phosphorus and algae (chlorophyll-a), but not water clarity.
LakeQuality publishes no grade of its own beside it. Everything below thathas been measured is reported on this page.
Monitoring: the Environment Agency (England).
Foulridge Upper Reservoir is a lake in Cumbria and Lancashire County, England.
Source: the Environment Agency (England) — not the EPA Water Quality Portal, last sampled 2025-03-20. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Foulridge Upper Reservoir is safe to swim in today is a call for the Environment Agency (England) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Foulridge Upper Reservoir
These are the measurements EA publishes for Foulridge Upper Reservoir. More on the source.
No clarity data. Phosphorus 98.5 µg/L. Chlorophyll-a 22.5 µg/L. TSI 66.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 98.5µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 22.5µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 66 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
Ask about Foulridge Upper Reservoir
Answers come straight from the public measurements and survey records on this page.
Stays via Stay22
Stays near Foulridge Upper Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Foulridge Upper Reservoir in Cumbria and Lancashire, England — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Foulridge Upper Reservoir
Prices for Oct 2–4, 4 adults. Change dates on the map below.
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Follow Foulridge Upper Reservoir’s readings
Email me when new measurements post for this lake. Updates stay free.
Or email
Fishing Foulridge Upper Reservoir
Frequently asked questions about Foulridge Upper Reservoir
Where is Foulridge Upper Reservoir?
- Foulridge Upper Reservoir is a lake in Cumbria and Lancashire, England. This page reports official water-quality measurements, shown as reported.
What is the water quality of Foulridge Upper Reservoir?
- Foulridge Upper Reservoir in Cumbria and Lancashire, England has official water-quality measurements, shown as reported. Phosphorus: 98.5 µg/L. Chlorophyll-a (algae): 22.5 µg/L.
Is Foulridge Upper Reservoir safe to swim in?
- Foulridge Upper Reservoir has official nutrient and clarity measurements, not a bacteria swim class and not a safety clearance. Algal blooms, currents, and depth are not covered. Always check local notices before swimming.
Explore Foulridge Upper Reservoir across LakeQuality
More lakes in England
Where this data comes from
24 measurements from 1 monitoring station, 2024–2025. Retrieved from the Environment Agency (England; not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Environment Agency (England)
ea-wqa24 samples · 2024–2025
Monitoring station identifiers (1)
NW-LSN0460
Authority classifications are shown as the authority published them. See where the data comes from and data sources.