Top Flash Lake
Top Flash Lake in Gtr Mancs Mersey and Ches, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 660 µg/L. Chlorophyll-a (algae): 97 µg/L.
Why Top Flash Lake has no A–F grade
Top Flash Lake 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).
Top Flash Lake is a lake in Gtr Mancs Mersey and Ches County, England.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-03-16. Grade methodology: LakeGrade methodology.
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Top Flash Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 660 µg/L. Chlorophyll-a: 97 µg/L. Trophic State Index: 87.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 660 µg/L | Not graded |
| Chlorophyll-a (Algae) | 97 µg/L | Not graded |
| Trophic State Index (TSI) | 87 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Top Flash Lake
Compare lakeside cabins, hotels, and vacation rentals near Top Flash Lake in Gtr Mancs Mersey and Ches, 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.
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Fishing Top Flash Lake
Frequently asked questions about Top Flash Lake
What is the water quality of Top Flash Lake?
- Top Flash Lake in Gtr Mancs Mersey and Ches, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 660 µg/L. Chlorophyll-a (algae): 97 µg/L.
Is Top Flash Lake safe to swim in?
- Top Flash Lake 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.
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More lakes in England
Where this data comes from
36 measurements from 1 monitoring station, 2024–2026. Retrieved from the Environment Agency (England; not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Environment Agency (England)
ea-wqa36 samples · 2024–2026
Monitoring station identifiers (1)
NW-LSN0340
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: 2026-03-16
Monitoring stations: 1