Warren Lake
Warren Lake in Cambs and Bedfordshire, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 57 µg/L. Chlorophyll-a (algae): 22 µg/L.
Why Warren Lake has no A–F grade
Warren 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).
Warren Lake is a lake in Cambs and Bedfordshire County, England.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-06-10. 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 Warren Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 57 µg/L. Chlorophyll-a: 22 µg/L. Trophic State Index: 62.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 57 µg/L | Not graded |
| Chlorophyll-a (Algae) | 22 µg/L | Not graded |
| Trophic State Index (TSI) | 62 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Warren Lake
Compare lakeside cabins, hotels, and vacation rentals near Warren Lake in Cambs and Bedfordshire, 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 Warren Lake
Frequently asked questions about Warren Lake
What is the water quality of Warren Lake?
- Warren Lake in Cambs and Bedfordshire, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 57 µg/L. Chlorophyll-a (algae): 22 µg/L.
Is Warren Lake safe to swim in?
- Warren 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.
Explore Warren Lake across LakeGrade
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Where this data comes from
6 measurements from 1 monitoring station, 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-wqa6 samples · 2026
Monitoring station identifiers (1)
AN-LSN0185
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: 2026-06-10
Monitoring stations: 1