Dataset

Lea Guardians

Dataset by Thames21

Dataset summary

Observations

23 June 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

22 June 2026

Arnos Park Growing Space (downstream)

4 parameters tested

ammonia, conductivity, phosphate, water temperature

22 June 2026

Arnos Park Growing Space (upstream)

4 parameters tested

ammonia, conductivity, phosphate, water temperature

22 June 2026

Waterfall Walk 2 (Downstream)

4 parameters tested

ammonia, conductivity, phosphate, water temperature

22 June 2026

Waterfall Walk 1 (Upstream)

4 parameters tested

ammonia, conductivity, phosphate, water temperature

21 June 2026

Brookfield Meadow

7 parameters tested

ammonia, clarity, colour, current weather, odour, phosphate, weather in the past 24hrs

20 June 2026

Lordship Recreation Ground (Downstream)

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 depth, water flow, water level

20 June 2026

Whitehall Outfall 5b

14 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

20 June 2026

Whitehall Outfall 5a

14 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

19 June 2026

River Lea Flood Relief Channel

11 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

19 June 2026

Bridge by Springfield Marina

13 parameters tested

algae, 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 temperature

19 June 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

19 June 2026

OUTFALL PYMM0161: Shirebourne Culvert Victoria Rec Ground

20 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, water use

19 June 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

19 June 2026

Downstream of Jack’s Lake

20 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, water use

18 June 2026

Eversley Crescent Outfall (Downstream)

5 parameters tested

ammonia, current weather, current weather description, phosphate, weather in the past 24hrs

18 June 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

18 June 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

18 June 2026

Downstream of Connaught Water

14 parameters tested

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