Dataset

Lea Guardians

Dataset by Thames21

Dataset summary

Observations

28 April 2026

Beech Hall Crescent CSO

12 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description

28 April 2026

Beech Hall

12 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description

27 April 2026

Downstream of Connaught Water

13 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level

27 April 2026

Footbridge near Rangers Road

13 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level

27 April 2026

Whitehall Plain

13 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level

27 April 2026

Whitehall Outfall 5b

15 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level, water temperature

27 April 2026

Whitehall Outfall 5a

15 parameters tested

algae, ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level, water temperature

24 April 2026

Folly Lane EA monitoring point

14 parameters tested

algae, ammonia, clarity, colour, conductivity, current weather, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, water flow, water level, water temperature

24 April 2026

Markfield Park (Stonebridge Brook) CSO

11 parameters tested

ammonia, clarity, colour, current weather, current weather description, odour, water surface, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water use

24 April 2026

Upstream of Markfield Park (Stonebridge Brook) CSO

12 parameters tested

ammonia, clarity, colour, current weather, current weather description, water surface, phosphate, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level, water use

24 April 2026

Arnos Park Growing Space (downstream)

4 parameters tested

ammonia, conductivity, phosphate, water temperature

24 April 2026

Arnos Park Growing Space (upstream)

4 parameters tested

ammonia, conductivity, phosphate, water temperature

24 April 2026

East Finchley Allotments - East Stream

18 parameters tested

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level, water temperature, water use

24 April 2026

Waterfall Walk 2 (Downstream)

4 parameters tested

ammonia, conductivity, phosphate, water temperature

24 April 2026

Waterfall Walk 1 (Upstream)

4 parameters tested

ammonia, conductivity, phosphate, water temperature

24 April 2026

The Charter Road (Gordon Avenue)

16 parameters tested

algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level, water temperature

24 April 2026

Highams Park Lake

16 parameters tested

algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, water flow, water level, water temperature

23 April 2026

Oak Hill Park 2 (Downstream)

19 parameters tested

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, turbidity, water depth, water flow, water level, water temperature

23 April 2026

Hillyfields park

17 parameters tested

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, weather in the past 24hrs, weather in the past 24hrs description, turbidity, water flow, water level, water temperature

23 April 2026

Downstream of Jack’s Lake

19 parameters tested

air temperature, algae, ammonia, clarity, colour, conductivity, current weather, current weather description, odour, water surface, phosphate, pollution sources, weather in the past 24hrs, weather in the past 24hrs description, turbidity, water depth, water flow, water level, water temperature