Lake Rotoma
Lake Rotoma in North Island, New Zealand has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 10.9 m visibility. Chlorophyll-a (algae): 0.9 µg/L.
- Clarity
- 10.9 m
Why Lake Rotoma has no A–F grade
Lake Rotoma 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).
Lake Rotoma 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 2021-03-28. Grade methodology: LakeGrade methodology.
Watch Lake Rotoma 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 Lake Rotoma
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Crystal clear, you can see 35.8 ft down. Chlorophyll-a: 0.9 µg/L. Trophic State Index: 28.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 10.9 m | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | 0.9 µg/L | Not graded |
| Trophic State Index (TSI) | 28 | Oligotrophic |
Low nutrients, clear water, excellent for swimming
Where to stay near Lake Rotoma
Compare lakeside cabins, hotels, and vacation rentals near Lake Rotoma in North 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 Rotoma
Availability and prices from Stay22 partners (Booking.com, Vrbo, Expedia). We may earn a commission from bookings, at no extra cost to you.
Fishing Lake Rotoma
Frequently asked questions about Lake Rotoma
What is the water quality of Lake Rotoma?
- Lake Rotoma in North Island, New Zealand has official water-quality measurements, not a LakeQuality A–F grade. Water clarity: 10.9 m visibility. Chlorophyll-a (algae): 0.9 µg/L.
Is Lake Rotoma safe to swim in?
- Lake Rotoma 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 Lake Rotoma across LakeGrade
More lakes in New Zealand
Where this data comes from
34 measurements from 17 monitoring stations, 2017–2021. 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-gloria34 samples · 2017–2021
Analytical methods
- PANGAEA GLORIA 2022 inland-lake chlorophyll-a and Secchi
Monitoring station identifiers (17)
GID_2311GID_2312GID_2402GID_2403GID_2417GID_2418GID_2423GID_2424GID_2451GID_2452GID_2475GID_2476GID_2481GID_2482GID_2483GID_2484GID_2485
Authority classifications are stored separately from LakeQuality A–F letters and are never blended. See how grades are calculated and data sources.