Dataset

Lea Guardians

Dataset by Thames21

Dataset summary

Observations

21 December 2025

Waterfall Walk 2 (Downstream)

8 parameters tested

ammonia, colour, conductivity, oxygen, phosphate, turbidity, water flow, water temperature

21 December 2025

D/S Whitehall Rd

13 parameters tested

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

21 December 2025

Whitehall Outfalls

13 parameters tested

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

21 December 2025

Waterfall Walk 1 (Upstream)

9 parameters tested

ammonia, colour, conductivity, oxygen, phosphate, turbidity, water flow, water level, water temperature

21 December 2025

Grovelands Park Stream below dam

7 parameters tested

ammonia, conductivity, current weather, phosphate, weather in the past 24hrs, turbidity, water temperature

21 December 2025

Grovelands Park Lake Outfall by cafe and dam

7 parameters tested

ammonia, conductivity, current weather, phosphate, weather in the past 24hrs, turbidity, water temperature

21 December 2025

Grovelands Park Lake Downstream of reedbeds

7 parameters tested

ammonia, conductivity, current weather, phosphate, weather in the past 24hrs, turbidity, water temperature

21 December 2025

Grovelands Park Lake Entry

7 parameters tested

ammonia, conductivity, current weather, phosphate, weather in the past 24hrs, turbidity, water temperature

21 December 2025

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

20 December 2025

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 temperature

20 December 2025

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 temperature

20 December 2025

Lordship Recreation Ground (Downstream)

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

19 December 2025

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

19 December 2025

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

18 December 2025

Tottenham Cemetery

18 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, turbidity, water depth, water flow, water level, water temperature

17 December 2025

Hatch Roundabout - Downstream

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

17 December 2025

Hatch Roundabout - Upstream

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

16 December 2025

Rectory Farm

11 parameters tested

ammonia, conductivity, current weather, current weather description, water surface, phosphate, weather in the past 24hrs, weather in the past 24hrs description, turbidity, water flow, water level

15 December 2025

Newgate Street

13 parameters tested

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

15 December 2025

D/S Whitehall Rd

13 parameters tested

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