Whittle Dene Great Northern Reservoir
Northumberland Durham and Tees, EnglandView mapDirections
EA publishes the water-quality measurements for Whittle Dene Great Northern Reservoir. Here is what has been measured.
- Limited data
Whittle Dene Great Northern Reservoir in Northumberland Durham and Tees, England has official water-quality measurements, shown as reported. Phosphorus: 31.3 µg/L. Chlorophyll-a (algae): 7.4 µg/L.
How Whittle Dene Great Northern Reservoir is classified
Whittle Dene Great Northern Reservoir in England is published with the authority's own measurements and class. The measurements here are published by the agency that samples the lake, as reported. Sampling here has recorded phosphorus and algae (chlorophyll-a), but not water clarity.
LakeQuality publishes no grade of its own beside it. Everything below thathas been measured is reported on this page.
Monitoring: the Environment Agency (England).
Whittle Dene Great Northern Reservoir is a lake in Northumberland Durham and Tees County, England.
Source: the Environment Agency (England) — not the EPA Water Quality Portal, last sampled 2026-07-29. Methodology: how these readings are compared.
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Whittle Dene Great Northern Reservoir is safe to swim in today is a call for the Environment Agency (England) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Whittle Dene Great Northern Reservoir
These are the measurements EA publishes for Whittle Dene Great Northern Reservoir. More on the source.
No clarity data. Phosphorus 31.3 µg/L. Chlorophyll-a 7.4 µg/L. TSI 52.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | No reading How deep a black-and-white disk stays visible from the surface. Higher is clearer. | |
| Total phosphorus | 31.3µg/L | Measured, not scored The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. |
| Chlorophyll-a (algae) | 7.4µg/L | Measured, not scored The green pigment in algae — a direct measure of how much algae is in the water. |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 52 | Eutrophic OligotrophicMesotrophicEutrophicHypereutrophic |
High nutrients, frequent algae, reduced clarity
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Frequently asked questions about Whittle Dene Great Northern Reservoir
Where is Whittle Dene Great Northern Reservoir?
- Whittle Dene Great Northern Reservoir is a lake in Northumberland Durham and Tees, England. This page reports official water-quality measurements, shown as reported.
What is the water quality of Whittle Dene Great Northern Reservoir?
- Whittle Dene Great Northern Reservoir in Northumberland Durham and Tees, England has official water-quality measurements, shown as reported. Phosphorus: 31.3 µg/L. Chlorophyll-a (algae): 7.4 µg/L.
Is Whittle Dene Great Northern Reservoir safe to swim in?
- Whittle Dene Great Northern 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.
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Where this data comes from
37 measurements from 1 monitoring station, 2016–2026. Retrieved from the Environment Agency (England; not the EPA Water Quality Portal) on 2026-08-16.
Collected and reported by
- Environment Agency (England)
ea-wqa37 samples · 2016–2026
Monitoring station identifiers (1)
NE-43300127
Authority classifications are shown as the authority published them. See where the data comes from and data sources.