Lakes in Herts and North London, England
Find lakes in Herts and North London: county page for 34 named lakes in England. Official surface phosphorus, chlorophyll-a, and Secchi, shown as the authority reports them; none is a swim-safety class.
Lake map
Map shows 34 lakes with coordinates
Named lakes
| Lake | Place | Total phosphorus | Chlorophyll-a | Secchi | Year |
|---|---|---|---|---|---|
| Ashford Station Lake | Herts and North London | 52 µg/L | 5.4 µg/L | — | 2026 |
| Boating Lake | Herts and North London | 196 µg/L | 64 µg/L | — | 2017 |
| Bowyers Lake | Herts and North London | 37 µg/L | 2.7 µg/L | — | 2026 |
| Bowyers Water :Waltham Cross | Herts and North London | 38 µg/L | 5.7 µg/L | — | 2022 |
| Broadwater Lake | Herts and North London | 115 µg/L | 8.9 µg/L | — | 2026 |
| Cargill Lake | Herts and North London | 160 µg/L | 9.5 µg/L | — | 2026 |
| Colne Mere | Herts and North London | 480 µg/L | 7.9 µg/L | — | 2021 |
| Denahm Quarry Lake | Herts and North London | 75 µg/L | 17 µg/L | — | 2026 |
| Fairlands Valley Park Lake | Herts and North London | 66 µg/L | 47 µg/L | — | 2026 |
| Felix Lane Landing Stage Lake | Herts and North London | 49 µg/L | 6.9 µg/L | — | 2026 |
| Friday Lake | Herts and North London | 62 µg/L | 5.7 µg/L | — | 2026 |
| Heron Lake | Herts and North London | 75 µg/L | 5.2 µg/L | — | 2021 |
| Hythe Lagoon Lake | Herts and North London | 460 µg/L | 2.4 µg/L | — | 2021 |
| Kingsmead Lake | Herts and North London | 54 µg/L | 3.5 µg/L | — | 2021 |
| Large Lake | Herts and North London | 360 µg/L | 39 µg/L | — | 2017 |
| Little Orlitts Lake | Herts and North London | 430 µg/L | 3.5 µg/L | — | 2025 |
| Lockwood Reservoir | Herts and North London | 150 µg/L | 7.8 µg/L | — | 2025 |
| Long Water | Herts and North London | 240 µg/L | 13 µg/L | — | 2026 |
| North Metropolitan Pit :Cheshunt Lake | Herts and North London | 112 µg/L | 14 µg/L | — | 2022 |
| North Metropolitan Pit Lake | Herts and North London | 61 µg/L | 3.4 µg/L | — | 2026 |
| Princess Diana Fountain Lake | Herts and North London | 37 µg/L | 1.2 µg/L | — | 2025 |
| Serpentine Lake | Herts and North London | 260 µg/L | 29 µg/L | — | 2026 |
| Seventy Acres Lake :Fishers Green | Herts and North London | 200 µg/L | 8.1 µg/L | — | 2022 |
| Silverwings Lake | Herts and North London | 34 µg/L | 4.3 µg/L | — | 2024 |
| St Georges Lake | Herts and North London | 45 µg/L | 3.2 µg/L | — | 2025 |
| Stanborough Lake | Herts and North London | 76 µg/L | 5.4 µg/L | — | 2026 |
| Stanstead Innings Lake | Herts and North London | 28 µg/L | 7.3 µg/L | — | 2026 |
| Stoke Newington West Reservoir | Herts and North London | 58 µg/L | 7.5 µg/L | — | 2026 |
| The Golf Lakes | Herts and North London | 71 µg/L | 6.7 µg/L | — | 2025 |
| Tunford Marsh Lake | Herts and North London | 31 µg/L | 4.8 µg/L | — | 2026 |
| Turnershill Marsh :Fishers Green Lake | Herts and North London | 569 µg/L | 37 µg/L | — | 2022 |
| Weald Country Park Main Lake | Herts and North London | 125 µg/L | 14 µg/L | — | 2026 |
| Woodberry Wetlands Lake | Herts and North London | 18 µg/L | 6.1 µg/L | — | 2024 |
| Wraysbury Ii Gravel Pit Lake | Herts and North London | 110 µg/L | 22 µg/L | — | 2026 |
Frequently asked questions
- How many named lakes are in Herts and North London?
- 34 named lakes in Herts and North London, England, have official phosphorus and chlorophyll-a, 2017–2026. Values are the authority's measurements, shown as reported.
- Where do the Herts and North London readings come from?
- Herts and North London pages show official phosphorus, chlorophyll-a, and Secchi from the publishing authority, with the year each was taken.
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