Serpentine North Lake
Serpentine North Lake in North Island, New Zealand has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.5 m visibility. Chlorophyll-a (algae): 5.4 µg/L.
- Clarity
- 2.5 m
Why Serpentine North Lake has no A–F grade
Serpentine North Lake in New Zealand 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 water clarity and algae (chlorophyll-a), but not phosphorus.
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 GLORIA inland-lake matchup archive (PANGAEA 948492).
Serpentine North Lake is a lake in North Island County, New Zealand.
Source: the GLORIA inland-lake matchup archive (PANGAEA 948492) — not the EPA Water Quality Portal, last sampled 2020-07-27. 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 Serpentine North Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Moderate clarity, visible to about 8.3 ft. Chlorophyll-a: 5.4 µg/L. Trophic State Index: 47.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 2.54 m | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 5.4 µg/L | Not graded |
| Trophic State Index (TSI) | 47 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Serpentine North Lake
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Fishing Serpentine North Lake
Frequently asked questions about Serpentine North Lake
What is the water quality of Serpentine North Lake?
- Serpentine North Lake in North Island, New Zealand has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 2.5 m visibility. Chlorophyll-a (algae): 5.4 µg/L.
Is Serpentine North Lake safe to swim in?
- Serpentine North 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
2 measurements from 1 monitoring station, 2020. Retrieved from the listed programme (not the EPA Water Quality Portal). See data sources on 2026-08-20.
Collected and reported by
- GLORIA (PANGAEA 948492)
pangaea-gloria2 samples · 2020
Analytical methods
- PANGAEA GLORIA 2022 inland-lake chlorophyll-a and Secchi
Monitoring station identifiers (1)
GID_2458
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See how grades are calculated and data sources.