Ham Wall Reserve Phytoplankton Lake
Ham Wall Reserve Phytoplankton Lake in Wessex, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 705 µg/L. Chlorophyll-a (algae): 3.5 µg/L.
Why Ham Wall Reserve Phytoplankton Lake has no A–F grade
Ham Wall Reserve Phytoplankton 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).
Ham Wall Reserve Phytoplankton Lake is a lake in Wessex County, England.
Source: EPA Water Quality Portal sampling records, your state environmental agency, last sampled 2026-07-10. Grade methodology: LakeGrade methodology.
Watch Ham Wall Reserve Phytoplankton Lake water quality
Subscribe for LakeQuality updates by email. No spam, unsubscribe anytime.
Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Ham Wall Reserve Phytoplankton Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
No clarity data. Phosphorus level: 705 µg/L. Chlorophyll-a: 3.5 µg/L. Trophic State Index: 71.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | No recent samples | |
| Phosphorus | 705 µg/L | Not graded |
| Chlorophyll-a (Algae) | 3.5 µg/L | Not graded |
| Trophic State Index (TSI) | 71 | Hypereutrophic |
Very high nutrients, dense algae, poor clarity
Where to stay near Ham Wall Reserve Phytoplankton Lake
Compare lakeside cabins, hotels, and vacation rentals near Ham Wall Reserve Phytoplankton Lake in Wessex, 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.
Top-rated places to stay near Ham Wall Reserve Phytoplankton Lake
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Fishing Ham Wall Reserve Phytoplankton Lake
Frequently asked questions about Ham Wall Reserve Phytoplankton Lake
What is the water quality of Ham Wall Reserve Phytoplankton Lake?
- Ham Wall Reserve Phytoplankton Lake in Wessex, England has official water-quality measurements, not a LakeQuality A–F grade. Phosphorus: 705 µg/L. Chlorophyll-a (algae): 3.5 µg/L.
Is Ham Wall Reserve Phytoplankton Lake safe to swim in?
- Ham Wall Reserve Phytoplankton 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 Ham Wall Reserve Phytoplankton Lake across LakeGrade
More lakes in England
Where this data comes from
7 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-wqa7 samples · 2026
Monitoring station identifiers (1)
SW-LSN0158
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: 2026-07-10
Monitoring stations: 1