Ranworth Flood Lake
Ranworth Flood Lake in Essex Norfolk and Suffolk, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 753 µg/L.
Why Ranworth Flood Lake has no A–F grade
Ranworth Flood 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, but not water clarity and algae (chlorophyll-a).
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).
Ranworth Flood Lake is a lake in Essex Norfolk and Suffolk County, England.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2017-10-11. 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 Ranworth Flood Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 753 µg/L. Trophic State Index: 100.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 753 µg/L | Not graded |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 100 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Ranworth Flood Lake
Compare lakeside cabins, hotels, and vacation rentals near Ranworth Flood Lake 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 Ranworth Flood Lake
Frequently asked questions about Ranworth Flood Lake
What is the water quality of Ranworth Flood Lake?
- Ranworth Flood Lake in Essex Norfolk and Suffolk, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 753 µg/L.
Is Ranworth Flood Lake safe to swim in?
- Ranworth Flood 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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Where this data comes from
7 measurements from 1 monitoring station, 2017. Retrieved from the Environment Agency (England; not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Environment Agency (England)
ea-wqa7 samples · 2017
Monitoring station identifiers (1)
AN-BUR170RF
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: 2017-10-11
Monitoring stations: 1