Norfolk Flyfishers Lake Swanton Morely
Norfolk Flyfishers Lake Swanton Morely in Essex Norfolk and Suffolk, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 36 µg/L. Chlorophyll-a (algae): 13.5 µg/L.
Why Norfolk Flyfishers Lake Swanton Morely has no A–F grade
Norfolk Flyfishers Lake Swanton Morely 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).
Norfolk Flyfishers Lake Swanton Morely is a lake in Essex Norfolk and Suffolk County, England.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-03-13. 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 Norfolk Flyfishers Lake Swanton Morely
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 36 µg/L. Chlorophyll-a: 13.5 µg/L. Trophic State Index: 56.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 36 µg/L | Not graded |
| Chlorophyll-a (Algae) | 13.5 µg/L | Not graded |
| Trophic State Index (TSI) | 56 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Norfolk Flyfishers Lake Swanton Morely
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Fishing Norfolk Flyfishers Lake Swanton Morely
Frequently asked questions about Norfolk Flyfishers Lake Swanton Morely
What is the water quality of Norfolk Flyfishers Lake Swanton Morely?
- Norfolk Flyfishers Lake Swanton Morely in Essex Norfolk and Suffolk, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 36 µg/L. Chlorophyll-a (algae): 13.5 µg/L.
Is Norfolk Flyfishers Lake Swanton Morely safe to swim in?
- Norfolk Flyfishers Lake Swanton Morely 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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Where this data comes from
21 measurements from 1 monitoring station, 2025–2026. Retrieved from the Environment Agency (England; not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Environment Agency (England)
ea-wqa21 samples · 2025–2026
Monitoring station identifiers (1)
AN-LSN103
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: 2026-03-13
Monitoring stations: 1