Lake Manapouri
Lake Manapouri in South Island, New Zealand has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 9.4 m visibility.
- Clarity
- 9.4 m
Why Lake Manapouri has no A–F grade
Lake Manapouri 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, but not phosphorus and algae (chlorophyll-a).
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).
Lake Manapouri is a lake in South Island County, New Zealand.
Source: the GLORIA inland-lake matchup archive (PANGAEA 948492) — not the EPA Water Quality Portal, last sampled 2017-11-02. 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 Lake Manapouri
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Crystal clear, you can see 30.8 ft down. Trophic State Index: 28.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 9.4 m | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 28 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Lake Manapouri
Compare lakeside cabins, hotels, and vacation rentals near Lake Manapouri in South Island, New Zealand — 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 Lake Manapouri
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Fishing Lake Manapouri
Frequently asked questions about Lake Manapouri
What is the water quality of Lake Manapouri?
- Lake Manapouri in South Island, New Zealand has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 9.4 m visibility.
Is Lake Manapouri safe to swim in?
- Lake Manapouri 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
3 measurements from 3 monitoring stations, 2017. 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-gloria3 samples · 2017
Analytical methods
- PANGAEA GLORIA 2022 inland-lake chlorophyll-a and Secchi
Monitoring station identifiers (3)
GID_2341GID_2342GID_2343
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See how grades are calculated and data sources.