Olton Reservoir
Olton Reservoir in Staffs Warks and West Mids, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 240 µg/L. Chlorophyll-a (algae): 31.5 µg/L.
Why Olton Reservoir has no A–F grade
Olton Reservoir 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).
Olton Reservoir is a lake in Staffs Warks and West Mids County, England.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2025-02-10. 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 Olton Reservoir
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 240 µg/L. Chlorophyll-a: 31.5 µg/L. Trophic State Index: 74.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 240 µg/L | Not graded |
| Chlorophyll-a (Algae) | 31.5 µg/L | Not graded |
| Trophic State Index (TSI) | 74 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Olton Reservoir
Compare lakeside cabins, hotels, and vacation rentals near Olton Reservoir in Staffs Warks and West Mids, 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 Olton Reservoir
Frequently asked questions about Olton Reservoir
What is the water quality of Olton Reservoir?
- Olton Reservoir in Staffs Warks and West Mids, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 240 µg/L. Chlorophyll-a (algae): 31.5 µg/L.
Is Olton Reservoir safe to swim in?
- Olton Reservoir 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 Olton Reservoir across LakeGrade
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Where this data comes from
12 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-wqa12 samples · 2024–2025
Monitoring station identifiers (1)
MD-LSN0061
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: 2025-02-10
Monitoring stations: 1