Lake Ruataniwha
Lake Ruataniwha in South Island, New Zealand has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1 m visibility.
- Clarity
- 1 m
Why Lake Ruataniwha has no A–F grade
Lake Ruataniwha 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 Ruataniwha 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 2018-02-11. 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 Ruataniwha
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Very murky, less than 3.2 ft of visibility. Trophic State Index: 60.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 0.97 m | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 60 | Eutrophic |
High nutrients, frequent algae, reduced clarity
Where to stay near Lake Ruataniwha
Compare lakeside cabins, hotels, and vacation rentals near Lake Ruataniwha 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 Ruataniwha
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Fishing Lake Ruataniwha
Frequently asked questions about Lake Ruataniwha
What is the water quality of Lake Ruataniwha?
- Lake Ruataniwha in South Island, New Zealand has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 1 m visibility.
Is Lake Ruataniwha safe to swim in?
- Lake Ruataniwha 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
1 measurement from 1 monitoring station, 2018. 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-gloria1 sample · 2018
Analytical methods
- PANGAEA GLORIA 2022 inland-lake chlorophyll-a and Secchi
Monitoring station identifiers (1)
GID_2397
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See how grades are calculated and data sources.