Clearest lakes in Norway
Clearest lakes in Norway: 40 named lakes have an official Secchi depth. The 20 below are ranked by that reading, water clarity as the authority reports it.
Lake map
Map shows 20 lakes with coordinates
Highest Secchi readings in Norway
| Lake | Place | Total phosphorus | Chlorophyll-a | Secchi | Year |
|---|---|---|---|---|---|
| Steinvatnet | — | 2.0 µg/L | 0.70 µg/L | 15 m | 2020 |
| Kapervatnet | — | 2.0 µg/L | 0.50 µg/L | 13 m | 2023 |
| Svartdalsvatnet | — | 2.0 µg/L | 0.90 µg/L | 10 m | 2023 |
| Lille Rostavatn | — | 2.0 µg/L | 0.60 µg/L | 10 m | 2020 |
| Taarnvatnet | — | 2.0 µg/L | 0.70 µg/L | 10 m | 2022 |
| Mjogsjoeen Lake | — | 5.0 µg/L | 0.80 µg/L | 9.9 m | 2021 |
| Femunden Graaneset Lake | — | 3.0 µg/L | 0.80 µg/L | 9.8 m | 2023 |
| Leirbekkvatnet | — | 2.0 µg/L | 0.70 µg/L | 9.5 m | 2020 |
| Moskanjavri Lake | — | 4.0 µg/L | 0.90 µg/L | 9.3 m | 2020 |
| Movatnet Eid | — | 2.5 µg/L | 0.80 µg/L | 9.2 m | 2019 |
| Mjøsa Lake | — | 4.6 µg/L | 2.1 µg/L | 9.0 m | 2023 |
| Mjosa Lake | — | 5.0 µg/L | 2.0 µg/L | 8.5 m | 2023 |
| Fjellgardsvatnet | — | 3.0 µg/L | 1.2 µg/L | 7.8 m | 2023 |
| Skardvatnet | — | 2.3 µg/L | 0.90 µg/L | 7.3 m | 2023 |
| Atnsjoeen Lake | — | 4.0 µg/L | 1.5 µg/L | 7.2 m | 2022 |
| Mjoesa Broettum Lake | — | 5.8 µg/L | 1.2 µg/L | 6.8 m | 2023 |
| Surtningen Lake | — | 8.0 µg/L | 1.7 µg/L | 6.7 m | 2021 |
| Sandnes-Langen Lake | — | 3.5 µg/L | 1.1 µg/L | 6.7 m | 2019 |
| Geitvatnet | — | 3.0 µg/L | 0.80 µg/L | 6.0 m | 2020 |
| Selbusjoen | — | 3.0 µg/L | 1.2 µg/L | 5.5 m | 2023 |
Showing 20 of 40 named lakes. Open a county or place page for the rest.
Frequently asked questions
- Which lakes in Norway are the clearest?
- 40 named lakes in Norway have an official Secchi depth. This page ranks the 20 deepest readings. Secchi is a clarity measurement, not a swim-safety class.
- Is clear water the same as clean water?
- No. Secchi measures how far a disk stays visible. A clear lake can still have bacteria, toxins, or contaminants this catalog does not measure. Open a lake page for the authority's values.
Clearest lakes in other countries
Named lakes and official measurements
Directory of official lake water quality
3,904 lakes with Secchi
748 lakes with Secchi
409 lakes with Secchi
307 lakes with Secchi
269 lakes with Secchi
159 lakes with Secchi
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