Mirehouse Reservoir
Mirehouse Reservoir in Cumbria and Lancashire, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 43 µg/L. Chlorophyll-a (algae): 11 µg/L.
Why Mirehouse Reservoir has no A–F grade
Mirehouse Reservoir in England is published with the authority's own measurements, not a LakeQuality letter. official authority class; not a LakeQuality A–F letter Sampling here has recorded phosphorus and algae (chlorophyll-a), but not water clarity.
A letter on the LakeQuality scale would be an invention, not an official class. Everything below that has been measured is still reported on this page.
Monitoring: the Environment Agency (England).
Mirehouse Reservoir is a lake in Cumbria and Lancashire County, England.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-03-17. Grade methodology: LakeGrade methodology.
Watch Mirehouse Reservoir water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Mirehouse Reservoir
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 43 µg/L. Chlorophyll-a: 11 µg/L. Trophic State Index: 56.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 43 µg/L | Not graded |
| Chlorophyll-a (Algae) | 11 µg/L | Not graded |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Mirehouse Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Mirehouse 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 Mirehouse Reservoir
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Fishing Mirehouse Reservoir
Frequently asked questions about Mirehouse Reservoir
What is the water quality of Mirehouse Reservoir?
- Mirehouse Reservoir in Cumbria and Lancashire, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 43 µg/L. Chlorophyll-a (algae): 11 µg/L.
Is Mirehouse Reservoir safe to swim in?
- Mirehouse 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 Mirehouse Reservoir across LakeGrade
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-LSN0080
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See methodology and data sources.
Data Sources
Water quality data from the EPA Water Quality Portal
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion
Most recent sample: 2025-03-17
Monitoring stations: 1