Clearest lakes in Latvia
Clearest lakes in Latvia: 34 named lakes have an official Secchi depth. The 20 below are ranked by that reading — water clarity, not a LakeQuality A–F grade.
Lake map
Highest Secchi readings in Latvia
| Lake | Place | Total phosphorus | Chlorophyll-a | Secchi | Year |
|---|---|---|---|---|---|
| Laukezers | — | 15 µg/L | 3.3 µg/L | 7.5 m | 2023 |
| Sventes Ezers | — | 10 µg/L | 2.8 µg/L | 6.6 m | 2023 |
| Dridza Ezers A Dala | — | 12 µg/L | 3.9 µg/L | 5.2 m | 2022 |
| Raznas Ezers | — | 15 µg/L | 4.0 µg/L | 3.9 m | 2021 |
| Ricu Ezers | — | 14 µg/L | 3.7 µg/L | 3.6 m | 2023 |
| Lielais Gusena Ezers | — | 22 µg/L | 5.3 µg/L | 3.0 m | 2022 |
| Kalna Ezers | — | 22 µg/L | 6.4 µg/L | 2.6 m | 2022 |
| Saukas Ezers | — | 20 µg/L | 8.2 µg/L | 2.2 m | 2023 |
| Usmas Ezers | — | 16 µg/L | 4.7 µg/L | 2.1 m | 2023 |
| Liduksnas Ezers | — | 18 µg/L | 5.2 µg/L | 2.1 m | 2021 |
| Kiruma Ezers | — | 30 µg/L | 8.8 µg/L | 1.9 m | 2023 |
| Daugulu Ezers | — | 15 µg/L | 4.8 µg/L | 1.7 m | 2023 |
| Kisezers Preti Mezaparkam | — | 38 µg/L | 12 µg/L | 1.6 m | 2023 |
| Mazais Baltezers | — | 57 µg/L | 17 µg/L | 1.6 m | 2023 |
| Raiskuma Ezers | — | 29 µg/L | 13 µg/L | 1.6 m | 2023 |
| Busnieku Ezers | — | 11 µg/L | 4.4 µg/L | 1.5 m | 2022 |
| Kaniera Ezers Z Dala | — | 36 µg/L | 5.2 µg/L | 1.5 m | 2023 |
| Rigas Udenskratuve | — | 58 µg/L | 5.8 µg/L | 1.5 m | 2023 |
| Valguma Ezers | — | 47 µg/L | 28 µg/L | 1.5 m | 2023 |
| Kisezers Preti Milgravja Caurtekai | — | 55 µg/L | 15 µg/L | 1.4 m | 2017 |
Showing 20 of 34 named lakes. Open a county or place page for the rest.
Frequently asked questions
- Which lakes in Latvia are the clearest?
- 34 named lakes in Latvia have an official Secchi depth. This page ranks the 20 deepest readings. Secchi is a clarity measurement, not a swim-safety class and not a LakeQuality A–F grade.
- 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 grade. Open a lake page for the authority's values.
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Named lakes and official measurements
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