New Hall Pond Thorndon
New Hall Pond Thorndon in Essex Norfolk and Suffolk, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 89.5 µg/L. Chlorophyll-a (algae): 11.5 µg/L.
Why New Hall Pond Thorndon has no A–F grade
New Hall Pond Thorndon 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).
New Hall Pond Thorndon is a lake in Essex Norfolk and Suffolk County, England.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-03-03. 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 New Hall Pond Thorndon
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 89.5 µg/L. Chlorophyll-a: 11.5 µg/L. Trophic State Index: 62.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 89.5 µg/L | Not graded |
| Chlorophyll-a (Algae) | 11.5 µg/L | Not graded |
| Trophic State Index (TSI) | 62 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near New Hall Pond Thorndon
Compare lakeside cabins, hotels, and vacation rentals near New Hall Pond Thorndon in Essex Norfolk and Suffolk, 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 New Hall Pond Thorndon
Frequently asked questions about New Hall Pond Thorndon
What is the water quality of New Hall Pond Thorndon?
- New Hall Pond Thorndon in Essex Norfolk and Suffolk, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 89.5 µg/L. Chlorophyll-a (algae): 11.5 µg/L.
Is New Hall Pond Thorndon safe to swim in?
- New Hall Pond Thorndon 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
20 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-wqa20 samples · 2024–2025
Monitoring station identifiers (1)
AN-LSN0038
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: 2025-03-03
Monitoring stations: 1